Average annual temperature is 16.3 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: -6.3 °C
Number of sunny days: 177 days
Number of rainy days: 188 days
Look at detailed online map of West Haven
* Weather data for West Haven United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 20.0 | 26.2 | 25.2 | 27.4 | 31.3 | 34.7 | 35.9 | 37.3 | 32.4 | 30.1 | 26.6 | 19.2 |
| Average daytime temperature (°C) | 12.6 | 15.9 | 16.6 | 20.6 | 26.0 | 29.9 | 32.0 | 31.2 | 28.5 | 23.7 | 17.1 | 13.3 |
| Average temperature (°C) | 7.9 | 9.7 | 10.7 | 14.6 | 19.5 | 23.3 | 25.6 | 25.2 | 22.0 | 17.4 | 10.9 | 7.7 |
| Average night temperature (°C) | 4.2 | 5.7 | 5.8 | 9.4 | 14.2 | 17.3 | 20.8 | 20.8 | 16.8 | 12.4 | 6.3 | 3.8 |
| Absolute minimum temperature (°C) | -4.6 | -5.7 | -6.3 | 2.0 | 5.8 | 12.5 | 16.5 | 15.4 | 12.0 | 0.0 | -3.5 | -4.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.0 | 5.8 | 8.2 | 8.5 | 10.8 | 11.8 | 10.9 | 9.9 | 10.5 | 8.1 | 7.6 | 6.7 |
| Precipitation (mm) | 153 | 99 | 121 | 79 | 87 | 102 | 206 | 183 | 84 | 28 | 80 | 84 |
| Sunny days | 12 | 12 | 18 | 15 | 10 | 13 | 9 | 12 | 16 | 21 | 20 | 19 |
| Rainy days | 19 | 16 | 13 | 15 | 21 | 17 | 22 | 19 | 14 | 10 | 10 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit West Haven during the most sunny months:
The largest precipitation sum in West Haven is at