Montrouis Weather in September
September in Montrouis averages 30°C (86°F) during the day and 26°C (79°F) at night. It is the wettest month of the year, with 104 mm (4.1 in) of rainfall on average, so waterproof gear is a must.
Rainfall in Montrouis in September
With this being the rainiest month, having an umbrella is essential to avoid unexpected rain. Rain is expected on roughly 15 days, totalling around 104 mm (4.1 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Montrouis in September
If you're visiting Montrouis in September, expect highs of 30°C (86°F) and overnight lows around 26°C (79°F). It's usually most comfortable outside during the morning and later in the day. At 26°C (79°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Montrouis in September
Expect a lot of sunshine this month, with about 246 hours of sun. These sunny conditions add to the overall experience.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Montrouis. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Haiti, check out our Montrouis's climate page.
Montrouis Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
30°C (86°F)
Chance of Rain
50%
Precipitation
104 mm (4.1 in)
Rainy days
15 days
Humidity
54% *
Sunshine
246 hours *
Percentage Sunshine
*
Historical weather for Montrouis in September
Browse day-by-day weather records for Montrouis spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Montrouis historical weather extremes in September
Based on 20 years of weather observations in Montrouis between 2005 and 2025, these are the recorded extremes.
- Montrouis recorded its highest September temperature of 37°C (99°F) on September 15, 2025.
- The lowest daytime temperature in September was 26°C (79°F), recorded on September 2, 2008.
- Nighttime temperatures dropped to 20°C (68°F) on September 29, 2010, marking the coldest September night on record.
Best Places in Haiti in September
Find out more about the weather in Haiti and which places have the best travel conditions in this month. See all of Haiti in September →
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What to Wear in Montrouis in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Montrouis in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Haiti, check out our Montrouis's climate page.
Temperature Rainfall Sunshine Humidity
See the full Montrouis climate overview or explore weather in Haiti.
