Average annual temperature is 29.9 °C
Absolute maximum temperature: 43.4 °C
Absolute minimum temperature: 17.4 °C
Number of sunny days: 248 days
Number of rainy days: 117 days
Look at detailed online map of Upper River
* Weather data for Upper River Gambia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 39.1 | 40.7 | 42.5 | 43.4 | 43.0 | 42.4 | 36.8 | 34.8 | 33.6 | 36.8 | 38.2 | 38.7 |
| Average daytime temperature (°C) | 35.1 | 38.5 | 40.0 | 40.9 | 40.6 | 37.1 | 32.7 | 31.4 | 31.4 | 34.0 | 36.3 | 36.1 |
| Average temperature (°C) | 27.4 | 30.7 | 32.1 | 33.9 | 34.2 | 31.5 | 28.3 | 27.4 | 27.4 | 29.0 | 28.8 | 28.1 |
| Average night temperature (°C) | 20.8 | 23.2 | 24.1 | 26.7 | 28.3 | 26.7 | 25.1 | 24.5 | 24.2 | 24.8 | 22.1 | 21.3 |
| Absolute minimum temperature (°C) | 17.4 | 20.2 | 21.7 | 23.9 | 24.8 | 24.1 | 24.0 | 23.4 | 23.5 | 24.0 | 18.7 | 17.4 |
| 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) | 11.4 | 11.7 | 12.1 | 12.4 | 12.7 | 12.9 | 12.8 | 12.6 | 12.2 | 11.8 | 11.5 | 11.4 |
| 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) | 9.7 | 10.3 | 10.6 | 10.9 | 10.0 | 9.8 | 9.2 | 8.3 | 8.9 | 10.0 | 10.5 | 9.8 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 12 | 48 | 173 | 225 | 198 | 48 | 0 | 0 |
| Sunny days | 31 | 28 | 31 | 30 | 25 | 15 | 6 | 4 | 3 | 14 | 30 | 31 |
| Rainy days | 0 | 0 | 0 | 0 | 6 | 15 | 25 | 27 | 27 | 17 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Upper River is at