Average annual temperature is 25.7 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 68 days
Number of rainy days: 297 days
Look at detailed online map of Onwi
* Weather data for Onwi 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) | 35.1 | 36.2 | 34.5 | 33.6 | 34.0 | 31.3 | 30.8 | 30.3 | 31.6 | 31.8 | 32.5 | 34.7 |
| Average daytime temperature (°C) | 33.9 | 34.3 | 32.1 | 31.7 | 31.3 | 28.7 | 28.7 | 28.7 | 29.4 | 30.0 | 31.4 | 33.1 |
| Average temperature (°C) | 27.0 | 27.6 | 26.5 | 26.1 | 26.0 | 24.4 | 24.2 | 24.5 | 24.7 | 25.1 | 26.0 | 26.9 |
| Average night temperature (°C) | 22.1 | 23.3 | 23.2 | 23.1 | 23.2 | 21.9 | 22.1 | 22.1 | 22.2 | 22.5 | 22.8 | 22.0 |
| Absolute minimum temperature (°C) | 19.0 | 20.9 | 21.4 | 22.3 | 22.1 | 20.2 | 21.2 | 21.3 | 21.6 | 21.7 | 21.8 | 18.9 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.5 | 12.3 | 12.2 | 12.0 | 11.8 | 11.8 |
| 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) | 9.6 | 9.8 | 8.0 | 8.3 | 8.5 | 7.6 | 7.1 | 7.2 | 7.2 | 8.3 | 9.4 | 9.9 |
| Precipitation (mm) | 24 | 34 | 116 | 206 | 157 | 249 | 180 | 178 | 205 | 171 | 78 | 13 |
| Sunny days | 23 | 10 | 7 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 23 |
| Rainy days | 8 | 18 | 24 | 28 | 31 | 28 | 31 | 31 | 30 | 31 | 29 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Onwi is at