Average annual temperature is 11.6 °C
Absolute maximum temperature: 29.9 °C
Absolute minimum temperature: -3.7 °C
Number of sunny days: 106 days
Number of rainy days: 259 days
Look at detailed online map of Heiloo
* Weather data for Heiloo Netherlands is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.0 | 10.6 | 14.6 | 15.3 | 20.4 | 28.6 | 29.9 | 24.5 | 28.7 | 20.3 | 14.2 | 12.0 |
| Average daytime temperature (°C) | 7.6 | 8.2 | 8.6 | 11.3 | 15.4 | 21.8 | 19.9 | 19.8 | 21.5 | 15.5 | 10.4 | 8.6 |
| Average temperature (°C) | 6.1 | 5.9 | 6.5 | 8.3 | 12.2 | 18.0 | 17.6 | 17.3 | 17.9 | 13.6 | 8.5 | 7.0 |
| Average night temperature (°C) | 4.5 | 3.7 | 4.3 | 5.2 | 9.0 | 14.3 | 15.2 | 14.6 | 14.5 | 11.6 | 6.4 | 5.1 |
| Absolute minimum temperature (°C) | -2.8 | -2.2 | -3.4 | 0.1 | 4.7 | 9.5 | 12.7 | 10.7 | 10.3 | 6.3 | -3.1 | -3.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.3 | 9.9 | 11.9 | 14.0 | 15.8 | 16.8 | 16.3 | 14.7 | 12.7 | 10.6 | 8.8 | 7.7 |
| Daylight minimum duration (h) | 7.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 3.4 | 4.3 | 5.4 | 8.3 | 11.3 | 12.7 | 11.4 | 10.4 | 8.8 | 5.0 | 3.7 | 2.4 |
| Precipitation (mm) | 138 | 26 | 112 | 89 | 53 | 11 | 151 | 144 | 103 | 158 | 176 | 142 |
| Sunny days | 6 | 11 | 4 | 9 | 17 | 20 | 3 | 9 | 14 | 8 | 3 | 2 |
| Rainy days | 25 | 17 | 27 | 21 | 14 | 10 | 28 | 22 | 16 | 23 | 27 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Heiloo during the most sunny months:
Months with the longest average daylight duration in Heiloo:
The largest precipitation sum in Heiloo is at