
Grand Bois National Park
- Annual mean
- 27.2 °C
- Warmest month
- August
- Wettest month
- October
Atmospheric measurements at a representative coordinate detailing monthly temperature shifts, precipitation, and daylight.
Annual climate cycles for Deux Mamelles National Park are quantified through long-term monthly averages covering the period from 1991 to 2020. Recorded data includes mean temperatures, relative humidity, average wind speeds, and daily daylight hours at a single representative coordinate within the landscape. These metrics provide a baseline for observing the twelve-month atmospheric rhythm, focusing exclusively on historical climate behavior rather than current weather or site-specific forecasts.

Long-term monthly temperature averages and daily precipitation rates across the calendar year
Analyze average temperature bounds, daily precipitation rates, and calculated daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 25.6 °C22.5° to 29.3° | 1.2 mm/day | 71.7% | 4.7 m/s | 11 hours |
| February | 25.8 °C22.6° to 29.5° | 1 mm/day | 69.9% | 4.5 m/s | 11.4 hours |
| March | 26.1 °C22.7° to 30° | 0.8 mm/day | 68.6% | 4.5 m/s | 11.9 hours |
| April | 27 °C23.7° to 30.9° | 1 mm/day | 68.1% | 4.2 m/s | 12.4 hours |
| May | 27.6 °C24.7° to 31.2° | 2.6 mm/day | 71.5% | 4.2 m/s | 12.9 hours |
| June | 28.1 °C25.5° to 31.7° | 2.1 mm/day | 73.4% | 4.4 m/s | 13.1 hours |
| July | 28.5 °C25.8° to 32° | 2 mm/day | 72.2% | 3.9 m/s | 13 hours |
| August | 28.5 °C26.2° to 32° | 2.6 mm/day | 73% | 3.8 m/s | 12.6 hours |
| September | 28.3 °C25.9° to 31.8° | 3.1 mm/day | 74.1% | 3.4 m/s | 12.1 hours |
| October | 27.7 °C25.4° to 30.9° | 3.5 mm/day | 76.1% | 3.8 m/s | 11.6 hours |
| November | 26.9 °C24.3° to 30.3° | 2.7 mm/day | 75.2% | 4.5 m/s | 11.1 hours |
| December | 26.2 °C23.3° to 29.7° | 1.4 mm/day | 73.1% | 4.6 m/s | 10.9 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparative monthly averages for temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Examine long-term monthly normals across different geographic settings and protected landscapes





Delve deeper into the geographic context and protected landscape of Deux Mamelles National Park. Understanding its location on the Tiburon Peninsula, its unique cloud forest ecosystem, and its rugged limestone terrain provides essential insight into Haiti's natural heritage. Explore the mapped boundaries and regional setting to appreciate the full scope of this vital conservation area.