Temperatuur — 2026
| Maand | Wassenaar | Leidschendam-Voorburg | Verschil |
|---|---|---|---|
| Jan | – | 3 °C | – |
| Feb | – | 5.9 °C | – |
| Mrt | 7.9 °C | 8.2 °C | -0.3 |
| Apr | 9.2 °C | 9.5 °C | -0.3 |
| Mei | 13.3 °C | 14.5 °C | -1.2 |
| Jun | 17.3 °C | 18.8 °C | -1.5 |
| Jul | 18.8 °C | 19.5 °C | -0.7 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |