September Weather in Miami, United States

Last updated: June 24, 2025

In Miami, United States, the average temperature in September hovers around 24°C (75°F). However, you might experience temperatures as low as 8°C (47°F) and as high as 35°C (95°F). Expect about 87 mm (3.4 in) of precipitation spread over 6 days, contributing to a comfortable average humidity of 67%.

September Temperature in Miami

In September in Miami, the average temperature is 24°C (75°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 8°C (47°F). Be prepared for a range of weather conditions and enjoy a comfortable stay!

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

The chart illustrates September temperature patterns in Miami, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Miami, September typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (95°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Miami

In Miami in September, the precipitation amount is 87 mm (3.4 in) spread over a period of 6 days.

September Precipitation Trends in Miami

The chart displays monthly precipitation patterns in Miami, 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 Miami, September typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 6 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Miami

In Miami in September humidity is 67%. With an average temperature of 24°C (75°F), this humidity feels like a warm and sticky embrace, making traveling a bit uncomfortable as you find yourself seeking shade and refreshing drinks more often.

September Average Humidity in Miami

This chart illustrates the average monthly humidity levels in Miami, 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 Miami is approximately 67%, 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 Miami

In Miami in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Miami.

Maximum UV Index Levels in Miami for September

The chart shows the monthly maximum UV Index (UVI) for Miami 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 Miami typically reaches 9, which falls under the very high exposure category.

Data source: Miami 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 Miami Compares to Other Months

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

This table compares monthly weather conditions in Miami, 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 (38°F)	79 mm (3.1 inches)	77%	moderate
February Weather	4°C (40°F)	71 mm (2.8 inches)	76%	high
March Weather	11°C (52°F)	135 mm (5.3 inches)	71%	high
April Weather	15°C (58°F)	142 mm (5.6 inches)	73%	very high
May Weather	20°C (69°F)	200 mm (7.9 inches)	83%	very high
June Weather	26°C (78°F)	97 mm (3.8 inches)	83%	extreme
July Weather	27°C (82°F)	100 mm (3.9 inches)	81%	extreme
August Weather	26°C (79°F)	114 mm (4.5 inches)	73%	very high
September Weather	24°C (75°F)	87 mm (3.4 inches)	67%	very high
October Weather	16°C (61°F)	133 mm (5.3 inches)	72%	high
November Weather	9°C (49°F)	58 mm (2.3 inches)	82%	moderate
December Weather	6°C (44°F)	51 mm (2.0 inches)	85%	moderate