Temperatuur — 2026
| Month | Opmeer | Hoorn | Difference |
|---|---|---|---|
| Jan | – | 2 °C | – |
| Feb | – | 4.8 °C | – |
| Mar | 7.1 °C | 7.9 °C | -0.8 |
| Apr | 8.6 °C | 9 °C | -0.4 |
| May | 13.6 °C | 13.6 °C | +0.0 |
| Jun | 17.9 °C | 17.9 °C | +0.0 |
| Jul | 18.8 °C | 18.8 °C | +0.0 |
| Aug |
| 18.9 °C |
| 18.9 °C |
| +0.0 |
| Sep | 16.7 °C | 17.3 °C | -0.6 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |