| Month | CET | Anomaly | notes |
| January | 9.1 | 2.6 | |
| February | 9.6 | 3.0 | |
| March | 10.8 | 1.7 | |
| April | 16.2 | 4.4 | |
| May | 18.3 | 2.7 | |
| June | 19.9 | 1.3 | |
| July | 20.1 | -0.3 | |
| August | 21.8 | 1.7 | |
| September | 18.6 | 1.1 | |
| October | 13.5 | -0.4 | |
| November | 11.4 | 2.1 | |
| December | 7.5 | 0.3 |
Average for 2020: 14.75, anomaly: 1.66C
Daily CET graph
