Average annual temperature is 12.3 °C
Absolute maximum temperature: 23.3 °C
Absolute minimum temperature: -1.1 °C
Number of sunny days: 164
Number of rainy days: 201
Number of snow days:
Average annual precipitation: 971 mm
Look at detailed online map of Portsmouth
* Weather data for Portsmouth United Kingdom is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.1 | 10.5 | 11.9 | 14.7 | 19 | 23.3 | 20.7 | 20.9 | 22.7 | 19.7 | 14.8 | 12.9 |
| Average daytime temperature (°C) | 8.4 | 8.4 | 9.3 | 10.9 | 15.2 | 19.6 | 18.5 | 19 | 19.8 | 16.1 | 11.6 | 10.6 |
| Average temperature (°C) | 6.7 | 6.9 | 7.7 | 9.2 | 12.8 | 17.1 | 17.1 | 17.2 | 18.1 | 14.8 | 10 | 9.2 |
| Average night temperature (°C) | 5.1 | 5.4 | 6.3 | 7.4 | 10.3 | 14.6 | 15.5 | 15.2 | 16.4 | 13.2 | 8.2 | 7.7 |
| Absolute minimum temperature (°C) | -1 | 0.7 | 2 | 3.6 | 8.2 | 10 | 12.6 | 12.3 | 10.7 | 7.1 | 1.9 | -1.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.2 | 10.9 | 12.9 | 14.7 | 16.2 | 16.5 | 16.4 | 15.3 | 13.6 | 11.7 | 9.7 | 8.3 |
| Daylight mean duration (h) | 8.5 | 10 | 11.9 | 13.8 | 15.5 | 16.4 | 16 | 14.5 | 12.6 | 10.7 | 9 | 8 |
| Daylight minimum duration (h) | 8 | 9.3 | 10.9 | 12.9 | 14.8 | 16.2 | 15.4 | 13.6 | 11.7 | 9.8 | 8.3 | 8 |
| Sunshine mean duration (h) | 4.7 | 5.3 | 5.2 | 8.8 | 11.9 | 13.7 | 10.8 | 10.8 | 9.3 | 7.3 | 5.6 | 3.7 |
| Precipitation (mm) | 103 | 9 | 110 | 65 | 31 | 18 | 107 | 83 | 64 | 144 | 117 | 119 |
| Sunny days | 15 | 23 | 6 | 11 | 20 | 22 | 8 | 12 | 16 | 12 | 10 | 9 |
| Rainy days | 16 | 5 | 25 | 19 | 11 | 8 | 23 | 19 | 14 | 19 | 20 | 22 |
The best time to visit Portsmouth during the most sunny months:
Months with the longest average daylight duration in Portsmouth:
The largest precipitation sum in Portsmouth is at