Cardiff (Cardiff) weather
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Forecast days
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Today. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Cloudy changing to light rain by late morning. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: Next low at .Today. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Cloudy changing to light rain by late morning. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: Next low at .
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Wednesday 15 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Cloudy changing to sunny intervals in the afternoon. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .Wednesday 15 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Cloudy changing to sunny intervals in the afternoon. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .
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Thursday 16 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .Thursday 16 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low. Tide: First high at .
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Friday 17 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to light showers by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: ; Pollen: Low. Tide: First high at .Friday 17 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to light showers by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: ; Pollen: Low. Tide: First high at .
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Saturday 18 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Overcast changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: High; No pollen data. Tide: First high at .Saturday 18 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Overcast changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: High; No pollen data. Tide: First high at .
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Sunday 19 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: ; Sunset: . UV: High; Tide: First high at .Sunday 19 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: ; Sunset: . UV: High; Tide: First high at .
Six day forecast for Cardiff
| Time | 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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Chance of precipitation
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20% | 10% | 10% | <5% | <5% | 10% | 10% | 10% | 10% | 50% | 40% | 40% | 50% | 10% | 50% | 10% | 60% | 10% | 40% | <5% | <5% | <5% | <5% |
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13°
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13°
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13°
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12°
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12°
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12°
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12°
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13°
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13°
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14°
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14°
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15°
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15°
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16°
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16°
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16°
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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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12° | 11° | 11° | 11° | 11° | 11° | 10° | 11° | 11° | 11° | 12° | 12° | 12° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 12° | 12° |
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SE
6
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SE
8
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SE
8
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SE
9
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SE
8
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SE
9
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SE
10
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SE
11
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SE
13
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SE
13
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SE
13
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SE
14
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SE
15
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SSE
16
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SE
13
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SSE
15
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SSE
14
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SE
14
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SE
13
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SE
12
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SE
12
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ESE
11
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ESE
11
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12 | 14 | 15 | 16 | 16 | 17 | 18 | 19 | 21 | 22 | 23 | 24 | 26 | 28 | 24 | 26 | 23 | 25 | 23 | 22 | 23 | 21 | 20 |
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G | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | G | VG | G | VG | VG | VG | VG |
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Humidity
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93% | 93% | 92% | 92% | 91% | 89% | 87% | 85% | 83% | 81% | 80% | 77% | 72% | 71% | 74% | 65% | 70% | 72% | 73% | 75% | 76% | 79% | 82% |
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UV
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- | - | - | - | - | 1 | 1 | 2 | 3 | 3 | 4 | 5 | 6 | 5 | 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 |
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| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | 10% | 10% | 10% | 10% | <5% | <5% |
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13°
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13°
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12°
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13°
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15°
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16°
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17°
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16°
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14°
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11° | 11° | 11° | 11° | 12° | 14° | 15° | 15° | 12° |
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ESE
11
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SE
10
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ESE
11
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ESE
11
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ESE
13
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SE
12
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SE
9
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SE
8
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SE
8
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20 | 19 | 19 | 19 | 22 | 20 | 15 | 13 | 13 |
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VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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83% | 85% | 87% | 85% | 73% | 63% | 60% | 63% | 77% |
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UV
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- | - | - | 1 | 3 | 6 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
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| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | 10% | 10% | 10% | 10% |
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12°
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11°
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12°
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15°
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16°
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17°
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17°
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14°
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11° | 10° | 11° | 14° | 16° | 17° | 16° | 13° |
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ESE
6
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E
5
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E
5
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SE
5
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S
5
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S
4
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WSW
5
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WSW
6
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9 | 8 | 9 | 10 | 10 | 9 | 9 | 9 |
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VG | G | G | G | VG | VG | VG | VG |
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Humidity
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86% | 91% | 89% | 77% | 66% | 59% | 63% | 81% |
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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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10% | 10% | 10% | <5% | 40% | 40% | 30% | 10% |
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12°
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11°
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12°
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15°
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17°
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16°
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16°
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14°
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12° | 11° | 11° | 15° | 16° | 15° | 14° | 13° |
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SW
4
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SW
4
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SW
5
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W
4
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W
6
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WNW
10
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WNW
9
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WNW
7
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7 | 7 | 8 | 9 | 13 | 17 | 14 | 11 |
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G | G | G | VG | G | VG | VG | VG |
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Humidity
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89% | 92% | 90% | 78% | 74% | 77% | 78% | 86% |
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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% | 10% | 10% | 10% | 10% | 10% | 30% | 10% |
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13°
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12°
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12°
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14°
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16°
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17°
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16°
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15°
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12° | 11° | 12° | 13° | 15° | 15° | 15° | 14° |
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WNW
6
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WNW
6
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NW
6
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NW
6
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NW
7
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NW
9
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NW
9
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NNW
8
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10 | 9 | 10 | 12 | 14 | 16 | 16 | 13 |
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G | M | G | M | M | M | G | G |
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Humidity
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90% | 92% | 89% | 82% | 76% | 72% | 73% | 81% |
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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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<5% | <5% | <5% | 10% | 10% | 10% | 10% | <5% |
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14°
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13°
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14°
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15°
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17°
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17°
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17°
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15°
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13° | 12° | 12° | 14° | 16° | 16° | 16° | 14° |
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N
7
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N
7
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NNE
8
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NNE
9
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E
9
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WNW
8
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NW
8
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NNW
7
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12 | 12 | 13 | 15 | 16 | 16 | 14 | 11 |
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VG | VG | G | VG | VG | G | G | M |
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Humidity
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85% | 88% | 87% | 79% | 70% | 68% | 69% | 78% |
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UV
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- | - | 1 | 4 | 6 | 4 | 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:
Heavy rain and brisk winds spreading northeastwards.
This Evening and Tonight:
Staying wet this evening as outbreaks of rain continue overnight, this often heavy and persistent. Rain confined to the far north by dawn with clearer spells in the south. Brisk winds in heavy downpours. Generally rather mild. Minimum temperature 10 °C.
Tuesday:
Heavy rain clearing the north, leaving a drier day with some sunshine, though a risk of showers which may be heavy and possibly thundery. Lighter winds, warm in the sunshine. Maximum temperature 18 °C.
Outlook for Wednesday to Friday:
Unsettled with sunny spells and showers. Showers may be heavy and possibly thundery at times. Still warm where you catch the sunshine though feeling cooler than last week.
Updated:
UK long range weather forecast
Changeable with showers developing by day across the UK through the end of the week and over the weekend. The heaviest showers and greatest risk of thunderstorms across southern parts. Temperatures generally around or just a little above average, though with winds tending to be light, still feeling warm in sunnier areas. Over the weekend there are signs that showers may start to ease across the north with drier, more settled conditions probably becoming established for a time here. Confidence lowers into the following week with signals mixed. On balance a continuation of the showers in the south seems most likely, with the north continuing to see the best of any drier weather. Temperatures probably remaining a little above average.
Updated:
Signals during this period are weak and offer limited guidance beyond climatology. Similar weather conditions to those of the preceding few days are most likely to characterise this period to the end of May; a mixture of unsettled periods with rain and showers and settled interludes in-between. By early June, the chances of above and below average rainfall are evenly balanced. There is a slightly higher likelihood of above average temperatures compared with below average temperatures, such that the chance of hot spells, although still very small, is slightly higher than normal too.
Updated:
