Average annual temperature is 26.0 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: 17.6 °C
Number of sunny days: 97 days
Number of rainy days: 268 days
Look at detailed online map of Royan
* Weather data for Royan Sierra Leone is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 36.6 | 37.7 | 38.0 | 36.6 | 35.9 | 32.9 | 32.1 | 33.2 | 32.1 | 32.6 | 33.2 | 35.7 |
| Average daytime temperature (°C) | 35.0 | 36.1 | 34.6 | 34.5 | 32.5 | 30.0 | 29.2 | 28.2 | 29.3 | 29.9 | 30.8 | 33.0 |
| Average temperature (°C) | 26.7 | 27.7 | 27.1 | 27.5 | 26.6 | 25.0 | 24.7 | 24.4 | 24.8 | 25.1 | 25.9 | 26.2 |
| Average night temperature (°C) | 20.8 | 22.2 | 22.6 | 23.4 | 23.6 | 22.7 | 22.5 | 22.5 | 22.5 | 22.7 | 23.0 | 21.5 |
| Absolute minimum temperature (°C) | 17.6 | 20.4 | 20.6 | 22.1 | 22.9 | 21.8 | 21.7 | 21.3 | 21.7 | 21.8 | 22.3 | 18.0 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 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) | 9.7 | 9.8 | 9.4 | 8.9 | 7.7 | 6.8 | 7.1 | 5.8 | 6.7 | 6.8 | 8.1 | 10.0 |
| Precipitation (mm) | 2 | 1 | 47 | 130 | 367 | 493 | 557 | 611 | 428 | 463 | 150 | 3 |
| Sunny days | 27 | 23 | 15 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 25 |
| Rainy days | 4 | 5 | 16 | 26 | 31 | 30 | 31 | 31 | 30 | 31 | 27 | 6 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Royan is at