Cardiff (Cardiff) weather
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Forecast days
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Today. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low. Tide: Next high at .Today. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low. Tide: Next high at .
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Friday 17 May. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to cloudy by early evening. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .Friday 17 May. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to cloudy by early evening. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .
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Saturday 18 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Cloudy changing to light showers by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low. Tide: First high at .Saturday 18 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Cloudy changing to light showers by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low. Tide: First high at .
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Sunday 19 May. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to partly cloudy by nighttime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .Sunday 19 May. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to partly cloudy by nighttime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .
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Monday 20 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .Monday 20 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .
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Tuesday 21 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Cloudy changing to light showers by early evening. Sunrise: ; Sunset: . UV: High; Tide: First high at .Tuesday 21 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Cloudy changing to light showers by early evening. Sunrise: ; Sunset: . UV: High; Tide: First high at .
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Wednesday 22 May. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Light showers changing to sunny intervals by early evening. Sunrise: ; Sunset: . UV: Moderate; Tide: First high at .Wednesday 22 May. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Light showers changing to sunny intervals by early evening. Sunrise: ; Sunset: . UV: Moderate; Tide: First high at .
Seven day forecast for Cardiff
| Time | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | 10% | 10% | 10% | 20% | 50% | 60% | 80% | 50% | 50% | 10% | 10% |
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14°
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15°
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16°
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17°
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18°
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17°
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16°
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16°
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15°
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15°
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15°
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14°
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14°
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14°
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13°
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13° | 14° | 15° | 16° | 17° | 16° | 15° | 15° | 15° | 15° | 14° | 14° | 13° | 13° | 13° |
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ENE
7
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E
6
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ESE
5
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ESE
5
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SE
5
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SE
7
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ESE
7
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S
6
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W
3
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W
5
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W
6
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W
5
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WSW
5
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WSW
5
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WSW
5
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12 | 9 | 7 | 8 | 7 | 11 | 11 | 9 | 5 | 8 | 10 | 9 | 10 | 10 | 9 |
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G | G | G | G | G | G | G | VG | G | M | M | G | G | G | G |
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Humidity
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73% | 71% | 66% | 59% | 54% | 59% | 67% | 70% | 71% | 79% | 86% | 87% | 89% | 89% | 89% |
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UV
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3 | 4 | 4 | 4 | 5 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | - | - | - |
| Time | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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| Weather symbols |
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Chance of precipitation
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10% | 10% | <5% | 10% | 10% | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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13°
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13°
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13°
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13°
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12°
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13°
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12°
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12°
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13°
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14°
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15°
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16°
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17°
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18°
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19°
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19°
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20°
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20°
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20°
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20°
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19°
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18°
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17°
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16°
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13° | 13° | 12° | 12° | 12° | 12° | 12° | 12° | 12° | 13° | 14° | 15° | 17° | 17° | 18° | 18° | 19° | 19° | 19° | 19° | 18° | 17° | 16° | 15° |
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WSW
5
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WSW
5
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SW
4
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SW
3
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WSW
4
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SSE
4
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SSE
5
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SSE
5
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SE
5
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SE
5
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SE
5
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SE
5
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SE
5
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SE
6
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SE
5
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SSE
4
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SE
4
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SSE
5
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SSE
4
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SSE
4
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SSW
5
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SW
5
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WNW
5
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WNW
5
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9 | 9 | 7 | 6 | 6 | 7 | 8 | 8 | 7 | 8 | 8 | 9 | 8 | 10 | 9 | 8 | 8 | 9 | 8 | 8 | 9 | 9 | 10 | 10 |
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VG | VG | VG | G | G | G | G | G | G | G | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | G | G | G |
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Humidity
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90% | 91% | 92% | 91% | 91% | 90% | 90% | 88% | 85% | 80% | 74% | 67% | 60% | 55% | 51% | 50% | 48% | 48% | 49% | 50% | 57% | 63% | 69% | 72% |
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UV
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- | - | - | - | - | - | 1 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | - | - | - |
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | 10% | 10% | 40% | 40% | 30% | 10% |
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15°
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15°
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13°
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14°
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16°
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18°
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18°
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17°
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16°
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15° | 15° | 13° | 14° | 15° | 17° | 17° | 17° | 16° |
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WNW
4
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NW
3
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WNW
3
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NW
3
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NNW
6
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NNW
6
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WNW
7
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NNW
6
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NNE
4
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9 | 9 | 6 | 6 | 11 | 12 | 12 | 11 | 9 |
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G | G | G | M | G | M | M | G | G |
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Humidity
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75% | 78% | 83% | 83% | 79% | 73% | 75% | 76% | 82% |
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UV
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- | - | - | 1 | 4 | 5 | 3 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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15°
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14°
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14°
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16°
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18°
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20°
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19°
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17°
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15° | 13° | 13° | 14° | 17° | 18° | 17° | 15° |
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NNE
7
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NNE
7
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NE
8
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NE
9
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NE
8
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NE
8
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NE
8
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NE
7
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13 | 12 | 14 | 17 | 17 | 17 | 16 | 13 |
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G | G | G | VG | VG | VG | VG | VG |
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Humidity
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84% | 87% | 84% | 74% | 61% | 53% | 56% | 66% |
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UV
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- | - | 1 | 4 | 6 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | 10% | 10% |
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14°
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12°
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12°
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14°
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17°
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18°
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17°
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15°
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13° | 11° | 10° | 12° | 15° | 16° | 16° | 14° |
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ENE
8
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NE
9
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NE
10
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ENE
10
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ENE
8
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ENE
8
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ENE
8
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ENE
7
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15 | 15 | 18 | 18 | 17 | 17 | 15 | 12 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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72% | 78% | 80% | 72% | 62% | 59% | 64% | 75% |
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UV
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- | - | 1 | 4 | 7 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | 10% | 10% | 10% | 10% | 40% | 30% |
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14°
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12°
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12°
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14°
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16°
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16°
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16°
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14°
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12° | 11° | 11° | 13° | 15° | 15° | 14° | 13° |
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E
7
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ESE
7
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ESE
8
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ESE
7
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W
8
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SW
9
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WNW
10
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WNW
9
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12 | 13 | 14 | 15 | 17 | 19 | 19 | 15 |
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VG | VG | G | VG | VG | VG | VG | VG |
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Humidity
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80% | 85% | 85% | 78% | 71% | 68% | 72% | 79% |
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UV
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- | - | 1 | 4 | 6 | 3 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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30% | 30% | 40% | 40% | 40% | 30% | 10% | 10% |
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13°
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13°
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13°
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14°
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15°
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16°
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16°
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14°
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12° | 11° | 11° | 12° | 13° | 14° | 14° | 12° |
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WNW
9
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WNW
9
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NW
9
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NW
10
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NW
10
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WNW
11
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NW
10
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WSW
10
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14 | 14 | 16 | 18 | 20 | 20 | 19 | 17 |
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G | G | G | VG | G | VG | VG | VG |
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Humidity
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83% | 86% | 83% | 75% | 69% | 68% | 69% | 73% |
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UV
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- | - | 1 | 4 | 5 | 3 | 1 | - |
Our weather symbols tell you the weather conditions for any given hour in the day or night. This means that the symbol for 9am shows you what you will see from 9am to 10am.
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail or drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
The arrow shows the direction of the wind (up is north). If the arrow points from land to sea, the wind will be blowing out to sea (‘offshore’). The number is the average wind speed.
Beware of offshore winds if you are using inflatables, paddle boards or kayaks. These winds can blow you out to sea. Read more about how wind will affect you at the beach.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Moderate) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
This is the average height of the waves, 1-2 miles out to sea. The height of the waves can vary. The individual waves out to sea or at the beach can be higher than this number. If you are close to the water, keep an eye on the waves to stop you or your belongings being swept away.
Read more about calculating the expected height of the waves at the beach.
This is the average number of seconds between one wave and the next, 1-2 miles out to sea. A long wave period (more than 10 seconds) means the waves at the beach may be more powerful. Lifeguards can give you advice on waves if you’re planning to go into the water.
Read more about the period of waves.
The arrow shows the average direction of the waves 1-2 miles out to sea. It indicates how sheltered the beach will be from these waves. If the arrow points towards land, most of the waves’ power will reach the beach. If the arrow is parallel to or pointing away from land, the wave height is likely to be lower on the beach than it is offshore.
Lifeguards can give you advice on waves if you’re planning to go into the water.
Forecast row information
UK video forecast
Wales weather forecast
Headline:
Often cloudy, with showers and longer spells of rain.
Today:
A bright start to the morning, with fog patches soon clearing. Tending to cloud over from the west, with rain arriving across central and northern parts for the afternoon. Heavy showers in the south. Warm in any sunnier interludes. Maximum temperature 19 °C.
Tonight:
Heavy rain will tend to ease as we head through the evening. Staying cloudy overnight, with further light rain and drizzle at times. Minimum temperature 8 °C.
Friday:
A grey, damp start to the morning but soon brightening up with sunny spells developing. Scattered showers forming by the afternoon, some heavy with hail and thunder. Warm and humid. Maximum temperature 21 °C.
Outlook for Saturday to Monday:
Overnight cloud will give way to sunny spells each day. Staying mostly dry, but the risk of a few showers in places. Feeling warm in the sunshine.
Updated:
UK long range weather forecast
The week should start on a reasonable note in many areas, with a fair amount of dry and bright weather, especially in southern parts of the UK. Further north and west there will always be more in the way of cloud with a risk of some showers or spells of rain at times. Through the rest of the period it looks likely that fairly typical conditions will dominate across all parts, with northern and western areas often most at risk of outbreaks of rain, while further south and east will see the best of the drier and brighter interludes. There is a risk of showers even here though which at this time of year are prone to being heavy with occasional thunder. Temperatures will probably remain a little above average.
Updated:
There is nothing to suggest that conditions will be massively different to climatology at the end of the current month and though the first half of June. That said, both temperatures and rainfall are more-likely to be a little above average overall, with a fairly mixed bag seemingly most probable, with further rain or showers (possibly heavy/thundery at times) but also some spells of increasingly warm sunshine when it's not raining.
Updated:
