Average annual temperature is 24.5 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: 15.6 °C
Number of sunny days: 121 days
Number of rainy days: 244 days
Look at detailed online map of Santo
* Weather data for Santo 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) | 33.9 | 35.3 | 35.6 | 34.8 | 33.3 | 32.1 | 32.1 | 32.9 | 31.8 | 32.8 | 32.6 | 33.7 |
| Average daytime temperature (°C) | 32.6 | 34.1 | 33.4 | 32.8 | 31.1 | 29.0 | 28.7 | 28.3 | 29.2 | 30.0 | 31.0 | 32.1 |
| Average temperature (°C) | 24.7 | 26.4 | 26.0 | 25.8 | 25.0 | 23.8 | 23.3 | 23.3 | 23.5 | 23.8 | 24.3 | 24.4 |
| Average night temperature (°C) | 18.2 | 19.5 | 20.5 | 21.7 | 21.6 | 21.1 | 20.6 | 20.7 | 20.6 | 20.5 | 19.7 | 18.2 |
| Absolute minimum temperature (°C) | 15.8 | 17.1 | 17.1 | 20.4 | 20.5 | 20.2 | 19.0 | 19.6 | 19.9 | 19.3 | 17.1 | 15.6 |
| 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 | 11.8 | 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) | 10.2 | 10.2 | 9.5 | 9.3 | 8.6 | 7.3 | 7.8 | 6.9 | 8.4 | 9.0 | 9.7 | 10.6 |
| Precipitation (mm) | 24 | 1 | 75 | 142 | 241 | 234 | 287 | 412 | 346 | 270 | 84 | 0 |
| Sunny days | 29 | 26 | 16 | 6 | 2 | 0 | 0 | 1 | 0 | 1 | 11 | 29 |
| Rainy days | 2 | 2 | 15 | 24 | 29 | 30 | 31 | 30 | 30 | 30 | 19 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Santo is at