Average annual temperature is 26.7 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 114 days
Number of rainy days: 251 days
Look at detailed online map of Siwantam
* Weather data for Siwantam Ghana is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 35.5 | 37.1 | 36.9 | 35.6 | 34.8 | 33.9 | 32.4 | 32.1 | 33.6 | 35.1 | 35.6 | 35.4 |
| Average daytime temperature (°C) | 33.9 | 35.6 | 34.6 | 33.7 | 33.1 | 30.5 | 30.1 | 30.1 | 30.6 | 31.6 | 33.8 | 34.1 |
| Average temperature (°C) | 26.9 | 28.7 | 27.9 | 27.5 | 27.2 | 25.4 | 25.2 | 25.3 | 25.5 | 26.1 | 27.4 | 27.1 |
| Average night temperature (°C) | 20.9 | 23.0 | 23.6 | 23.7 | 23.7 | 22.5 | 22.5 | 22.6 | 22.5 | 22.7 | 23.1 | 21.3 |
| Absolute minimum temperature (°C) | 18.7 | 20.5 | 21.9 | 22.7 | 22.6 | 21.5 | 21.8 | 21.8 | 21.7 | 21.4 | 22.3 | 19.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 12.2 | 12.0 | 11.8 | 11.7 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.4 | 10.3 | 8.5 | 8.5 | 9.8 | 8.1 | 7.5 | 7.7 | 7.3 | 8.7 | 10.0 | 10.2 |
| Precipitation (mm) | 1 | 6 | 135 | 155 | 146 | 190 | 219 | 227 | 179 | 189 | 56 | 1 |
| Sunny days | 29 | 24 | 12 | 6 | 1 | 1 | 0 | 0 | 0 | 3 | 9 | 29 |
| Rainy days | 2 | 4 | 19 | 24 | 30 | 29 | 31 | 31 | 30 | 28 | 21 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siwantam is at