Average annual temperature is 13.6 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -6.5 °C
Number of sunny days: 170 days
Number of rainy days: 193 days
Number of snow days: 2 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) | 20.7 | 24.2 | 25.9 | 25.7 | 27.9 | 30.7 | 33.6 | 34.2 | 32.1 | 26.4 | 25.4 | 18.3 |
| Average daytime temperature (°C) | 11.6 | 14.6 | 15.8 | 19.4 | 21.8 | 25.7 | 30.0 | 29.5 | 25.7 | 20.5 | 14.7 | 11.6 |
| Average temperature (°C) | 5.7 | 8.6 | 8.9 | 12.6 | 16.0 | 19.1 | 23.1 | 22.5 | 19.1 | 13.6 | 8.0 | 5.3 |
| Average night temperature (°C) | 1.8 | 4.1 | 3.5 | 6.7 | 11.1 | 13.4 | 17.0 | 17.1 | 13.5 | 8.1 | 3.2 | 0.9 |
| Absolute minimum temperature (°C) | -5.8 | -6.5 | -6.5 | 0.6 | 3.4 | 7.8 | 12.5 | 13.3 | 8.5 | 2.8 | -5.4 | -6.0 |
| 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) | 5.9 | 6.5 | 8.4 | 8.7 | 10.1 | 10.8 | 12.2 | 10.6 | 10.8 | 9.5 | 7.4 | 6.6 |
| Precipitation (mm) | 128 | 92 | 85 | 122 | 56 | 95 | 39 | 118 | 46 | 24 | 27 | 90 |
| Sunny days | 13 | 11 | 17 | 13 | 9 | 10 | 6 | 13 | 19 | 20 | 20 | 19 |
| Rainy days | 16 | 17 | 14 | 17 | 22 | 20 | 25 | 18 | 11 | 11 | 10 | 12 |
| Snow days | 2 | 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