Average annual temperature is 22.7 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: 15.0 °C
Number of sunny days: 58 days
Number of rainy days: 307 days
Look at detailed online map of Biston
* Weather data for Biston Haiti is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 27.4 | 27.8 | 27.0 | 27.9 | 29.7 | 31.3 | 31.8 | 31.4 | 31.3 | 29.4 | 29.5 | 28.4 |
| Average daytime temperature (°C) | 25.5 | 26.3 | 25.6 | 26.1 | 27.2 | 27.6 | 29.8 | 29.8 | 29.4 | 27.8 | 27.2 | 26.0 |
| Average temperature (°C) | 20.5 | 20.9 | 20.9 | 21.5 | 23.0 | 23.8 | 24.8 | 24.7 | 24.5 | 23.5 | 22.6 | 21.4 |
| Average night temperature (°C) | 16.9 | 16.9 | 17.3 | 17.9 | 19.7 | 20.9 | 20.9 | 21.1 | 21.0 | 20.6 | 19.2 | 18.4 |
| Absolute minimum temperature (°C) | 15.0 | 15.8 | 15.6 | 15.8 | 18.9 | 19.7 | 19.3 | 20.1 | 20.0 | 19.0 | 17.4 | 16.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.5 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.0 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.1 | 10.6 | 10.9 | 11.6 | 11.4 | 10.7 | 11.2 | 11.3 | 11.0 | 10.0 | 9.6 | 9.4 |
| Precipitation (mm) | 31 | 24 | 73 | 113 | 121 | 112 | 95 | 159 | 88 | 200 | 152 | 121 |
| Sunny days | 15 | 3 | 3 | 3 | 6 | 7 | 6 | 3 | 1 | 1 | 3 | 7 |
| Rainy days | 16 | 25 | 28 | 27 | 25 | 23 | 25 | 28 | 29 | 30 | 27 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Biston is at