September Weather in Cuba, United States

Last updated: June 24, 2025

In September, the average temperature in Cuba, United States hovers around 17°C (63°F), providing a pleasantly mild climate. Expect temperatures to range from a chilly 1°C (34°F) to a warm 32°C (90°F). Precipitation is moderate, with about 41 mm (1.6 in) falling over 4 days, contributing to an average humidity of 72%. Whether you're exploring the outdoors or indulging in cozy indoor activities, this month offers a comfortable atmosphere for all!

September Temperature in Cuba

In September in Cuba, the average temperature is 17°C (63°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 1°C (34°F). Be prepared for a range of temperatures during your travels.

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

The chart illustrates September temperature patterns in Cuba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cuba, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Cuba

In Cuba in September, the precipitation amount is 41 mm (1.6 in) over the course of 4 days.

September Precipitation Trends in Cuba

The chart displays monthly precipitation patterns in Cuba, 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 Cuba, September typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 4 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 Cuba

In Cuba in September, humidity is 72%. With an average temperature of 17°C (63°F), this humidity feels like a muggy embrace, making outdoor activities a bit sticky and requiring plenty of hydration for a comfortable travel experience.

September Average Humidity in Cuba

This chart illustrates the average monthly humidity levels in Cuba, 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 Cuba is approximately 72%, 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 Cuba

In Cuba in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Cuba.

Maximum UV Index Levels in Cuba for September

The chart shows the monthly maximum UV Index (UVI) for Cuba 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 Cuba typically reaches 11, which falls under the extreme exposure category.

Data source: Cuba 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 Cuba Compares to Other Months

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

This table compares monthly weather conditions in Cuba, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	38 mm (1.5 inches)	78%	moderate
February Weather	-1°C (30°F)	37 mm (1.4 inches)	79%	high
March Weather	4°C (39°F)	44 mm (1.7 inches)	66%	very high
April Weather	9°C (48°F)	26 mm (1.0 inches)	60%	extreme
May Weather	14°C (58°F)	21 mm (0.8 inches)	57%	extreme
June Weather	20°C (68°F)	18 mm (0.7 inches)	55%	extreme
July Weather	21°C (71°F)	42 mm (1.7 inches)	56%	extreme
August Weather	21°C (69°F)	21 mm (0.8 inches)	65%	extreme
September Weather	17°C (63°F)	41 mm (1.6 inches)	72%	extreme
October Weather	10°C (50°F)	30 mm (1.2 inches)	78%	very high
November Weather	4°C (40°F)	22 mm (0.9 inches)	81%	high
December Weather	-2°C (29°F)	33 mm (1.3 inches)	79%	moderate