Average annual temperature is 15.6 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -7.2 °C
Number of sunny days: 194 days
Number of rainy days: 171 days
Look at detailed online map of Southampton
* Weather data for Southampton 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) | 18.7 | 23.3 | 23.9 | 28.6 | 26.1 | 28.9 | 36.9 | 34.2 | 34.0 | 28.6 | 26.4 | 18.0 |
| Average daytime temperature (°C) | 11.0 | 11.9 | 13.2 | 20.1 | 20.7 | 25.7 | 30.5 | 29.4 | 26.1 | 21.4 | 14.3 | 11.3 |
| Average temperature (°C) | 7.3 | 7.8 | 8.6 | 15.4 | 17.0 | 21.6 | 26.4 | 25.4 | 22.5 | 17.0 | 10.1 | 7.6 |
| Average night temperature (°C) | 4.4 | 4.1 | 4.9 | 11.8 | 13.9 | 18.2 | 23.0 | 22.3 | 19.3 | 13.4 | 6.8 | 4.7 |
| Absolute minimum temperature (°C) | -0.1 | -7.2 | -1.6 | 4.3 | 7.7 | 14.3 | 20.8 | 19.3 | 15.3 | 7.6 | -3.4 | -1.3 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.5 | 7.3 | 8.0 | 9.5 | 10.9 | 11.6 | 11.9 | 11.1 | 9.0 | 9.0 | 7.9 | 5.8 |
| Precipitation (mm) | 69 | 62 | 59 | 139 | 70 | 132 | 91 | 43 | 94 | 31 | 68 | 145 |
| Sunny days | 15 | 20 | 17 | 17 | 16 | 13 | 8 | 11 | 16 | 19 | 24 | 18 |
| Rainy days | 16 | 8 | 14 | 13 | 15 | 17 | 23 | 20 | 14 | 12 | 6 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Southampton during the most sunny months:
The largest precipitation sum in Southampton is at