September Weather in Cornillon, Haiti

Last updated: August 23, 2025

In September, the average temperature in Cornillon, Haiti is a pleasant 26°C (79°F). Visitors can expect a range from a mild 21°C (70°F) to a warm 34°C (93°F). Be prepared for some rain, as the area receives about 110 mm (4.3 in) of precipitation over 17 days. With an average humidity of 73%, it’s the perfect time to enjoy the warmth while staying hydrated!

September Temperature in Cornillon

In September in Cornillon, the average temperature is 26°C (79°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 21°C (70°F). This pleasant weather makes it an ideal time for travelers to explore and enjoy outdoor activities in Cornillon.

September Weather in Cornillon: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cornillon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cornillon, September typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (93°F) and lows dropping to around 21°C (70°F).

Data source: Temperature data for Cornillon generated using information from the Copernicus Climate Change Service.

September Precipitation in Cornillon

In Cornillon in September, the precipitation amount is 110 mm (4.3 in) spread over 17 days.

September Precipitation Trends in Cornillon

The chart displays monthly precipitation patterns in Cornillon, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Cornillon, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 17 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Cornillon

In Cornillon in September, humidity is 73%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable as you navigate through the heat with a constant sheen of sweat on your skin.

September Average Humidity in Cornillon

This chart illustrates the average monthly humidity levels in Cornillon, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Cornillon is approximately 73%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cornillon

In Cornillon in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Cornillon.

Maximum UV Index Levels in Cornillon for September

The chart shows the monthly maximum UV Index (UVI) for Cornillon in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Cornillon typically reaches 13, which falls under the extreme exposure category.

Data source: Cornillon September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Cornillon Compares to Other Months

Weather in Cornillon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cornillon, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Cornillon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	17 mm (0.7 inches)	65%	very high
February Weather	24°C (75°F)	7 mm (0.3 inches)	63%	extreme
March Weather	24°C (75°F)	44 mm (1.7 inches)	59%	extreme
April Weather	25°C (77°F)	72 mm (2.8 inches)	58%	extreme
May Weather	26°C (78°F)	80 mm (3.1 inches)	57%	extreme
June Weather	27°C (80°F)	45 mm (1.8 inches)	57%	extreme
July Weather	27°C (81°F)	51 mm (2.0 inches)	63%	extreme
August Weather	27°C (81°F)	86 mm (3.4 inches)	71%	extreme
September Weather	26°C (79°F)	110 mm (4.3 inches)	73%	extreme
October Weather	25°C (78°F)	103 mm (4.0 inches)	72%	extreme
November Weather	24°C (76°F)	90 mm (3.6 inches)	72%	very high
December Weather	24°C (75°F)	9 mm (0.4 inches)	69%	very high