Temperatuur — 2026
| Mois | Lasne | La Hulpe | Différence |
|---|---|---|---|
| Jan | 3.3 °C | 3.5 °C | -0.2 |
| Fév | 6.9 °C | 7 °C | -0.1 |
| Mar | 7.7 °C | 8.1 °C | -0.4 |
| Avr | 10.2 °C | 11.1 °C | -0.9 |
| Mai | 15.1 °C | 15.1 °C | +0.0 |
| Juin | 19.6 °C | 19.6 °C | +0.0 |
| Juil | 20.1 °C | 20.3 °C | -0.2 |
| Aoû |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |