Average annual temperature is 23.9 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: 15.4 °C
Number of sunny days: 111 days
Number of rainy days: 254 days
Look at detailed online map of Sei
* Weather data for Sei Democratic Republic of the Congo 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 | 36.9 | 36.8 | 32.7 | 33.0 | 32.6 | 32.4 | 33.0 | 32.0 | 32.2 | 30.4 | 33.5 |
| Average daytime temperature (°C) | 33.0 | 34.0 | 30.0 | 29.9 | 30.7 | 28.8 | 28.7 | 29.4 | 29.0 | 28.9 | 27.4 | 30.7 |
| Average temperature (°C) | 25.4 | 26.1 | 23.8 | 23.8 | 24.5 | 23.5 | 23.1 | 23.5 | 23.2 | 23.2 | 22.4 | 24.0 |
| Average night temperature (°C) | 18.3 | 18.9 | 19.6 | 19.6 | 20.0 | 19.6 | 19.1 | 19.1 | 19.1 | 19.4 | 19.1 | 18.6 |
| Absolute minimum temperature (°C) | 15.9 | 15.9 | 17.9 | 17.8 | 18.7 | 18.6 | 17.7 | 17.8 | 17.6 | 16.7 | 17.9 | 15.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 |
| Daylight mean duration (h) | 12.0 | 12.0 | 12.1 | 12.2 | 12.3 | 12.3 | 12.3 | 12.2 | 12.1 | 12.0 | 12.0 | 11.9 |
| Daylight minimum 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 |
| Sunshine mean duration (h) | 10.6 | 10.5 | 8.2 | 8.9 | 10.3 | 9.5 | 9.7 | 9.9 | 9.7 | 8.8 | 7.9 | 10.4 |
| Precipitation (mm) | 0 | 7 | 159 | 84 | 106 | 82 | 108 | 78 | 79 | 117 | 205 | 23 |
| Sunny days | 28 | 24 | 10 | 10 | 6 | 3 | 5 | 2 | 1 | 4 | 0 | 18 |
| Rainy days | 3 | 4 | 21 | 20 | 25 | 27 | 26 | 29 | 29 | 27 | 30 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sei is at