Average annual temperature is 26.5 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: 15.8 °C
Number of sunny days: 113 days
Number of rainy days: 252 days
Look at detailed online map of Merson
* Weather data for Merson 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) | 32.4 | 32.4 | 34.0 | 33.8 | 35.0 | 35.5 | 36.9 | 35.3 | 35.2 | 34.9 | 32.3 | 32.3 |
| Average daytime temperature (°C) | 30.2 | 31.5 | 31.6 | 31.2 | 32.8 | 33.6 | 34.5 | 33.2 | 33.5 | 32.7 | 31.0 | 30.3 |
| Average temperature (°C) | 23.8 | 24.9 | 25.2 | 25.3 | 26.9 | 28.2 | 28.9 | 28.1 | 27.8 | 27.3 | 26.2 | 25.0 |
| Average night temperature (°C) | 18.6 | 19.1 | 20.0 | 20.8 | 22.6 | 24.0 | 24.5 | 24.2 | 23.7 | 23.5 | 22.2 | 20.9 |
| Absolute minimum temperature (°C) | 15.8 | 18.2 | 18.1 | 18.4 | 21.2 | 22.6 | 23.4 | 23.3 | 22.9 | 21.6 | 20.5 | 18.5 |
| 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) | 11.1 | 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 | 10.7 | 11.2 | 11.5 | 11.2 | 11.0 | 11.1 | 10.8 | 10.8 | 10.4 | 9.9 | 10.0 |
| Precipitation (mm) | 12 | 5 | 24 | 124 | 131 | 52 | 81 | 157 | 83 | 145 | 45 | 21 |
| Sunny days | 19 | 20 | 12 | 1 | 3 | 10 | 13 | 5 | 1 | 2 | 13 | 14 |
| Rainy days | 12 | 8 | 19 | 29 | 28 | 20 | 18 | 26 | 29 | 29 | 17 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Merson is at