| Month | CET | Anomaly | notes |
| January | 6.1 | -0.3 | |
| February | 8.3 | 1.7 | |
| March | 10.9 | 1.8 | |
| April | 12.0 | 0.1 | |
| May | 14.6 | -1.0 | |
| June | 20.1 | 1.6 | |
| July | 22.4 | 2.1 | |
| August | 19.8 | -0.3 | |
| September | 20.3 | 2.7 | |
| October | 15.1 | 1.2 | |
| November | 10.3 | 1.0 | |
| December | 8.8 | 1.6 |
Average for 2021: 14.09, anomaly: 1.01C
Daily CET graph
