Average annual temperature is 15.5 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -2.7 °C
Number of sunny days: 230 days
Number of rainy days: 135 days
Look at detailed online map of Boston
* Weather data for Boston 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) | 32.2 | 29.7 | 28.4 | 26.0 | 24.0 | 21.6 | 22.8 | 25.4 | 31.4 | 33.3 | 35.3 | 33.0 |
| Average daytime temperature (°C) | 28.0 | 25.1 | 25.4 | 23.0 | 18.8 | 15.6 | 16.5 | 19.8 | 23.8 | 26.1 | 28.1 | 27.0 |
| Average temperature (°C) | 21.1 | 19.2 | 18.4 | 15.2 | 11.4 | 7.4 | 8.0 | 11.1 | 15.0 | 18.1 | 20.4 | 20.3 |
| Average night temperature (°C) | 14.7 | 14.0 | 12.3 | 8.1 | 5.4 | 0.8 | 1.1 | 3.0 | 6.4 | 10.2 | 12.7 | 14.3 |
| Absolute minimum temperature (°C) | 10.3 | 8.9 | 7.3 | 3.5 | -1.0 | -1.9 | -2.7 | -1.5 | 1.0 | 5.8 | 3.9 | 10.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.7 | 13.1 | 12.3 | 11.4 | 10.7 | 10.3 | 10.5 | 11.1 | 11.9 | 12.8 | 13.6 | 14.0 |
| 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) | 12.3 | 10.1 | 10.7 | 10.3 | 9.0 | 9.2 | 9.2 | 10.0 | 10.4 | 10.8 | 11.7 | 11.6 |
| Precipitation (mm) | 77 | 119 | 60 | 17 | 65 | 7 | 1 | 0 | 13 | 84 | 14 | 136 |
| Sunny days | 14 | 9 | 13 | 22 | 17 | 27 | 26 | 29 | 25 | 19 | 20 | 9 |
| Rainy days | 17 | 19 | 18 | 8 | 14 | 3 | 5 | 2 | 5 | 12 | 10 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Boston is at