Average annual temperature is 20.3 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: 5.8 °C
Number of sunny days: 176 days
Number of rainy days: 189 days
Look at detailed online map of Granvalley
* Weather data for Granvalley Swaziland is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 34.2 | 30.7 | 31.6 | 32.4 | 28.4 | 29.8 | 28.6 | 33.7 | 38.2 | 36.6 | 37.1 | 32.7 |
| Average daytime temperature (°C) | 29.3 | 26.7 | 27.1 | 26.8 | 23.3 | 23.8 | 22.1 | 23.8 | 28.6 | 26.2 | 28.5 | 27.1 |
| Average temperature (°C) | 24.0 | 22.7 | 22.4 | 21.0 | 18.1 | 17.0 | 15.3 | 17.2 | 21.0 | 20.3 | 22.9 | 22.4 |
| Average night temperature (°C) | 18.9 | 19.6 | 18.1 | 15.7 | 13.8 | 11.1 | 9.6 | 10.6 | 14.3 | 15.2 | 18.0 | 18.4 |
| Absolute minimum temperature (°C) | 13.6 | 15.2 | 11.8 | 11.3 | 8.2 | 8.6 | 5.8 | 7.1 | 10.1 | 10.7 | 12.2 | 14.8 |
| 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) | 13.6 | 13.0 | 12.2 | 11.5 | 10.8 | 10.5 | 10.6 | 11.2 | 11.9 | 12.7 | 13.4 | 13.8 |
| 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) | 10.8 | 8.8 | 10.3 | 10.1 | 8.7 | 9.6 | 8.7 | 9.1 | 9.4 | 7.4 | 9.3 | 7.6 |
| Precipitation (mm) | 94 | 350 | 57 | 13 | 69 | 2 | 31 | 4 | 27 | 96 | 47 | 169 |
| Sunny days | 15 | 1 | 9 | 16 | 17 | 22 | 26 | 25 | 20 | 9 | 11 | 5 |
| Rainy days | 16 | 27 | 22 | 14 | 14 | 8 | 5 | 6 | 10 | 22 | 19 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Granvalley is at