Average annual temperature is 18.9 °C
Absolute maximum temperature: 29.2 °C
Absolute minimum temperature: 10.5 °C
Number of sunny days: 74 days
Number of rainy days: 291 days
Look at detailed online map of Janja
* Weather data for Janja Rwanda is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 26.4 | 27.8 | 29.1 | 26.2 | 26.0 | 25.8 | 28.0 | 29.2 | 28.0 | 27.3 | 26.0 | 27.0 |
| Average daytime temperature (°C) | 24.7 | 25.5 | 24.2 | 24.0 | 24.3 | 24.7 | 25.6 | 26.7 | 25.8 | 25.7 | 23.9 | 25.0 |
| Average temperature (°C) | 18.5 | 19.0 | 18.4 | 18.1 | 18.6 | 18.7 | 18.9 | 20.3 | 19.2 | 19.4 | 18.4 | 19.1 |
| Average night temperature (°C) | 12.7 | 13.3 | 14.3 | 13.9 | 13.9 | 13.1 | 12.3 | 13.9 | 14.6 | 14.6 | 14.4 | 14.6 |
| Absolute minimum temperature (°C) | 11.2 | 10.9 | 11.8 | 11.1 | 11.7 | 11.3 | 10.5 | 11.7 | 11.9 | 12.9 | 13.0 | 13.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 10.1 | 9.5 | 8.3 | 8.9 | 10.1 | 10.0 | 10.4 | 9.5 | 9.7 | 10.1 | 8.9 | 9.9 |
| Precipitation (mm) | 53 | 78 | 288 | 235 | 113 | 17 | 2 | 17 | 231 | 153 | 226 | 210 |
| Sunny days | 4 | 5 | 1 | 0 | 1 | 8 | 26 | 25 | 2 | 2 | 0 | 0 |
| Rainy days | 27 | 23 | 30 | 30 | 30 | 22 | 5 | 6 | 28 | 29 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Janja is at