Average annual temperature is 11.7 °C
Absolute maximum temperature: 27.9 °C
Absolute minimum temperature: -3.8 °C
Number of sunny days: 122 days
Number of rainy days: 243 days
Look at detailed online map of Portslade-by-Sea
* Weather data for Portslade-by-Sea United Kingdom 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 | 11.5 | 12.5 | 15.9 | 20.0 | 26.7 | 25.2 | 23.2 | 27.9 | 21.1 | 14.8 | 13.1 |
| Average daytime temperature (°C) | 8.2 | 8.8 | 9.3 | 11.8 | 16.0 | 21.0 | 18.9 | 19.5 | 21.3 | 16.1 | 11.0 | 10.2 |
| Average temperature (°C) | 5.8 | 6.2 | 7.2 | 8.8 | 12.3 | 17.2 | 16.8 | 16.8 | 18.1 | 13.9 | 8.8 | 8.3 |
| Average night temperature (°C) | 3.3 | 3.9 | 5.0 | 5.6 | 8.5 | 13.2 | 14.2 | 13.9 | 15.0 | 11.7 | 6.3 | 6.5 |
| Absolute minimum temperature (°C) | -3.8 | -1.3 | -0.4 | 1.7 | 5.4 | 8.5 | 10.6 | 10.7 | 8.8 | 4.7 | -0.1 | -2.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 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) | 8.5 | 10.0 | 11.9 | 13.8 | 15.5 | 16.4 | 16.0 | 14.5 | 12.6 | 10.7 | 9.0 | 8.0 |
| Daylight minimum duration (h) | 8.0 | 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) | 4.0 | 4.8 | 4.6 | 8.7 | 11.3 | 13.7 | 10.8 | 10.6 | 9.7 | 7.0 | 4.4 | 2.9 |
| Precipitation (mm) | 116 | 6 | 137 | 90 | 39 | 65 | 111 | 100 | 68 | 156 | 142 | 123 |
| Sunny days | 16 | 14 | 2 | 9 | 14 | 21 | 2 | 3 | 15 | 11 | 9 | 6 |
| Rainy days | 15 | 14 | 29 | 21 | 17 | 9 | 29 | 28 | 15 | 20 | 21 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Portslade-by-Sea during the most sunny months:
Months with the longest average daylight duration in Portslade-by-Sea:
The largest precipitation sum in Portslade-by-Sea is at