Average annual temperature is 26.5 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: 18.3 °C
Number of sunny days: 138 days
Number of rainy days: 227 days
Look at detailed online map of Siléya
* Weather data for Siléya Guinea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 37.5 | 35.5 | 36.1 | 36.9 | 34.5 | 31.7 | 32.0 | 31.8 | 32.2 | 32.3 | 33.8 | 35.4 |
| Average daytime temperature (°C) | 34.1 | 33.8 | 33.6 | 34.2 | 32.3 | 29.8 | 29.0 | 28.6 | 29.9 | 30.5 | 31.8 | 33.5 |
| Average temperature (°C) | 26.0 | 26.9 | 27.3 | 28.1 | 27.8 | 25.9 | 25.3 | 25.2 | 25.6 | 26.0 | 26.8 | 26.4 |
| Average night temperature (°C) | 20.6 | 22.3 | 23.2 | 24.3 | 25.1 | 23.8 | 23.0 | 23.2 | 23.3 | 23.4 | 23.5 | 21.4 |
| Absolute minimum temperature (°C) | 18.8 | 21.2 | 21.9 | 22.7 | 24.3 | 22.9 | 21.3 | 22.2 | 22.5 | 22.5 | 22.5 | 18.3 |
| 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) | 11.6 | 11.8 | 12.1 | 12.3 | 12.6 | 12.7 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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) | 10.0 | 10.1 | 10.2 | 9.9 | 7.8 | 6.3 | 7.1 | 5.4 | 6.5 | 7.6 | 9.4 | 10.0 |
| Precipitation (mm) | 0 | 0 | 3 | 35 | 214 | 492 | 693 | 734 | 523 | 491 | 108 | 3 |
| Sunny days | 29 | 28 | 28 | 17 | 4 | 0 | 0 | 0 | 0 | 0 | 7 | 25 |
| Rainy days | 2 | 0 | 3 | 13 | 27 | 30 | 31 | 31 | 30 | 31 | 23 | 6 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siléya is at