Temperatuur — 2026
| Monat | Harlingen | Súdwest-Fryslân | Unterschied |
|---|---|---|---|
| Jan | – | 1.7 °C | – |
| Feb | – | 3.9 °C | – |
| Mär | 7.7 °C | 7.6 °C | +0.1 |
| Apr | 8.5 °C | 8.3 °C | +0.2 |
| Mai | 12.7 °C | 13.2 °C | -0.5 |
| Jun | 17 °C | 17.6 °C | -0.6 |
| Jul | 18.4 °C | 18.7 °C | -0.3 |
| Aug |
| 18.9 °C |
| 19 °C |
| -0.1 |
| Sep | 18 °C | 17.1 °C | +0.9 |
| Okt | – | – | – |
| Nov | – | – | – |
| Dez | – | – | – |