September weather forecastCap-Haitien, Haiti
September
Weather in September
September in Cap-Haitien sees a rise in rainfall to 152mm (5.98") while daylight and sunshine hours continue to decline slightly. The coastal city now gradually transitions towards the end of summer, with sea temperatures beginning their descent. Leading into October, rain conditions intensifies and the daylight duration shortens further. Despite these changes, September retains the warm sea and air temperatures, reflecting lingering traces of summer charm. The harmonious relationship between rain, sun, and warmth make this month an enduring favorite of both tourists and locals.Temperature
Cap-Haitien's warmest period falls in June through September, when the average high-temperatures ascend to 32°C (89.6°F).Rainfall
In September, the rain falls for 15 days. Throughout September, 152mm (5.98") of precipitation is accumulated. In Cap-Haitien, during the entire year, the rain falls for 142 days and collects up to 1698mm (66.85") of precipitation.Sea temperature
With an average sea temperature of 29.6°C (85.3°F), September is the month with the warmest seawater.Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.
Daylight
In September, the average length of the day in Cap-Haitien, Haiti, is 12h and 15min.On the first day of September in Cap-Haitien, sunrise is at 06:33 and sunset at 19:03. On the last day of the month, sunrise is at 06:39 and sunset at 18:37 EDT.
Sunshine
In Cap-Haitien, the average sunshine in September is 7h.UV index
In Cap-Haitien, the average daily maximum UV index in September is 11. A UV Index value of 11, and more, symbolizes an extreme health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 11 in September interprets into the following recommendations:
Employ every crucial safety step. Those with fair skin could experience burns in a matter of minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Even on overcast days, a sunscreen with a sun protection factor of no less than 30 should be generously applied and reapplied, particularly after swimming or outdoor activities. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cap-Haitien, Haiti
- Average high temperature in September: 32°C
The warmest months (with the highest average high temperature) are June, July, August and September (32°C).
The months with the lowest average high temperature are January, February and December (29°C).
- Average low temperature in September: 22°C
The months with the highest average low temperature are May, June, July, August, September and October (22°C).
The coldest months (with the lowest average low temperature) are January and February (19°C).
Average rainfall in September
Cap-Haitien, Haiti
- Average rainfall in September: 152mm
The wettest month (with the highest rainfall) is November (209mm).
The driest month (with the least rainfall) is March (90mm).
Average rainfall days in September
Cap-Haitien, Haiti
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is October (16 days).
The month with the least rainy days is February (8 days).
Average sea temperature in September
Cap-Haitien, Haiti
- Average sea temperature in September: 29.6°C
The best month for swimming (with the highest average sea temperature) is September (29.6°C).
The coldest month (with the lowest average sea temperature) is February (26.1°C).
Average daylight in September /
Average sunshine in September
Cap-Haitien, Haiti
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in September: 7h
The months with the most sunshine are March, April, June, July and August (Average sunshine: 8h).
The month with the least sunshine is December (Average sunshine: 6h).
Average UV index in September
Cap-Haitien, Haiti
- Average UV index in September: 11
The months with the highest UV index are March, April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 7).





