Average annual temperature is 13.8 °C
Absolute maximum temperature: 28.8 °C
Absolute minimum temperature: -3.3 °C
Number of sunny days: 213 days
Number of rainy days: 152 days
Look at detailed online map of Belfast
* Weather data for Belfast South Africa is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 26.6 | 25.3 | 25.7 | 23.1 | 21.6 | 19.7 | 19.2 | 24.7 | 27.8 | 28.8 | 27.7 | 27.8 |
| Average daytime temperature (°C) | 23.0 | 21.7 | 21.9 | 20.2 | 17.2 | 16.2 | 14.1 | 17.8 | 22.7 | 22.7 | 23.2 | 22.7 |
| Average temperature (°C) | 17.0 | 16.5 | 16.0 | 13.8 | 11.2 | 9.0 | 7.6 | 10.6 | 15.0 | 15.3 | 16.7 | 17.1 |
| Average night temperature (°C) | 11.5 | 12.9 | 11.1 | 8.3 | 6.1 | 3.0 | 2.0 | 4.2 | 7.9 | 9.0 | 10.7 | 12.3 |
| Absolute minimum temperature (°C) | 8.2 | 10.6 | 8.3 | 5.8 | -0.4 | -0.3 | -3.3 | -1.0 | 3.3 | 2.6 | 4.1 | 7.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.5 | 13.0 | 12.2 | 11.5 | 10.9 | 10.6 | 10.7 | 11.2 | 11.9 | 12.7 | 13.4 | 13.7 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 11.5 | 9.9 | 10.7 | 10.4 | 9.4 | 9.7 | 9.2 | 10.2 | 10.6 | 10.0 | 11.3 | 10.2 |
| Precipitation (mm) | 57 | 199 | 38 | 9 | 55 | 3 | 16 | 0 | 5 | 43 | 72 | 123 |
| Sunny days | 17 | 4 | 15 | 21 | 15 | 28 | 28 | 31 | 25 | 19 | 8 | 2 |
| Rainy days | 14 | 24 | 16 | 9 | 16 | 2 | 3 | 0 | 5 | 12 | 22 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Belfast is at