Gevoelstemperatuur — 2020
| Month | Katwijk | Wassenaar | Difference |
|---|---|---|---|
| Jan | 3.6 °C | 3.5 °C | +0.1 |
| Feb | 3.5 °C | 3.1 °C | +0.4 |
| Mar | 3.5 °C | 3 °C | +0.5 |
| Apr | 8.8 °C | 8.3 °C | +0.5 |
| May | 11.7 °C | 11.3 °C | +0.4 |
| Jun | 15.9 °C | 16 °C | -0.1 |
| Jul | 15.3 °C | 16.9 °C | -1.6 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |