| Month | CET | Anomaly | notes |
| January | 3.1 | -0.7 | |
| February | 5.1 | 1.4 | |
| March | 7.2 | 1.5 | |
| April | 6.4 | -1.5 | |
| May | 10.1 | -1.0 | |
| June | 15.5 | 1.4 | |
| July | 17.7 | 1.7 | |
| August | 15.8 | 0.1 | |
| September | 15.9 | 2.3 | |
| October | 12.1 | 1.5 | |
| November | 7.3 | 0.7 | |
| December | 6.4 | 1.7 |
Average for 2021: 10.26C, anomaly: 0.75C
Daily CET graph
