Temperatuur — 2026
| Maand | Castricum | Uitgeest | Verschil |
|---|---|---|---|
| Jan | 2.9 °C | – | – |
| Feb | 5.1 °C | – | – |
| Mrt | 7.9 °C | 7.7 °C | +0.2 |
| Apr | 9.4 °C | 9.1 °C | +0.3 |
| Mei | 13.5 °C | 13.5 °C | +0.0 |
| Jun | 17.8 °C | 17.8 °C | +0.0 |
| Jul | 18.8 °C | 18.7 °C | +0.1 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |