Average annual temperature is 22.6 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: 9.1 °C
Number of sunny days: 222 days
Number of rainy days: 143 days
Look at detailed online map of Tonga
* Weather data for Tonga 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) | 36.4 | 32.3 | 35.7 | 35.5 | 31.9 | 31.0 | 29.0 | 33.9 | 37.3 | 36.9 | 38.8 | 35.1 |
| Average daytime temperature (°C) | 31.4 | 29.5 | 30.2 | 30.3 | 26.9 | 26.6 | 24.0 | 26.4 | 31.1 | 28.2 | 30.9 | 29.6 |
| Average temperature (°C) | 25.7 | 24.7 | 24.7 | 23.8 | 21.0 | 19.1 | 17.2 | 19.7 | 23.7 | 22.4 | 24.9 | 24.6 |
| Average night temperature (°C) | 20.9 | 21.6 | 20.2 | 18.4 | 16.2 | 13.0 | 12.0 | 13.9 | 17.3 | 17.3 | 19.5 | 20.0 |
| Absolute minimum temperature (°C) | 16.0 | 18.4 | 16.4 | 15.8 | 13.0 | 10.3 | 9.1 | 10.6 | 12.9 | 12.8 | 13.7 | 16.0 |
| 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) | 10.9 | 9.3 | 10.7 | 10.2 | 8.9 | 9.5 | 8.8 | 9.3 | 9.2 | 7.9 | 10.1 | 8.6 |
| Precipitation (mm) | 117 | 257 | 46 | 9 | 35 | 21 | 31 | 2 | 29 | 69 | 27 | 154 |
| Sunny days | 19 | 1 | 12 | 24 | 17 | 25 | 24 | 25 | 27 | 16 | 20 | 12 |
| Rainy days | 12 | 27 | 19 | 6 | 14 | 5 | 7 | 6 | 3 | 15 | 10 | 19 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Tonga is at