| Month | CET | Anomaly | notes |
| January | 6.8 | 0.4 | |
| February | 8.7 | 2.1 | |
| March | 12.4 | 3.3 | |
| April | 13.4 | 1.6 | |
| May | 18.0 | 2.4 | |
| June | 20.5 | 1.9 | |
| July | 21.2 | 0.8 | |
| August | 19.9 | -0.2 | |
| September | 17.3 | -0.2 | |
| October | 15.4 | 1.4 | |
| November | 10.1 | 0.7 | |
| December | 7.5 | 0.2 |
Average for 2017: 14.30C, anomaly: 1.19C
Daily CET graph
