| Month | CET | Anomaly | notes |
| January | 4.0 | 0.1 | |
| February | 6.1 | 2.3 | |
| March | 8.7 | 3.0 | |
| April | 8.9 | 1.0 | |
| May | 13.2 | 2.0 | |
| June | 16.0 | 1.9 | |
| July | 16.8 | 0.7 | |
| August | 15.6 | -0.2 | |
| September | 13.5 | -0.1 | |
| October | 12.4 | 1.7 | |
| November | 6.8 | 0.3 | |
| December | 4.8 | 0.1 |
Average for 2017: 10.58C, anomaly: 1.07C
Daily CET graph
