September Weather in Port Saint Joe, United States

Last updated: June 24, 2025

In September, the average temperature in Port Saint Joe, United States is a warm 27°C (81°F), with a comfortable minimum of 19°C (66°F) and a pleasantly high maximum of 33°C (91°F). However, be prepared for some rain, as 187 mm (7.4 in) of precipitation may fall over 16 days. With an average humidity of 79%, it's the perfect time to explore while staying hydrated!

September Temperature in Port Saint Joe

In September in Port Saint Joe, the average temperature is 27°C (81°F). Maximums can reach 33°C (91°F) and minimums can be as low as 19°C (66°F). This makes it an ideal destination for travelers seeking warm and pleasant weather.

September Weather in Port Saint Joe: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Saint Joe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Saint Joe, September typically has an average temperature of 27°C (81°F), with highs reaching up to 33°C (91°F) and lows dropping to around 19°C (66°F).

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

September Precipitation in Port Saint Joe

In Port Saint Joe in September, the precipitation amount is 187 mm (7.4 in) over the course of 16 days.

September Precipitation Trends in Port Saint Joe

The chart displays monthly precipitation patterns in Port Saint Joe, 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 Port Saint Joe, September typically receives around 187 mm (7.4 inches) of precipitation spread over approximately 16 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 Port Saint Joe

In Port Saint Joe in September, humidity is 79%. With an average temperature of 27°C (81°F), this humidity feels like a warm and sticky embrace, making travel both challenging and invigorating as the air clings to your skin, urging you to seek shade or a refreshing drink.

September Average Humidity in Port Saint Joe

This chart illustrates the average monthly humidity levels in Port Saint Joe, 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 Port Saint Joe is approximately 79%, 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 Port Saint Joe

In Port Saint Joe in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Port Saint Joe.

Maximum UV Index Levels in Port Saint Joe for September

The chart shows the monthly maximum UV Index (UVI) for Port Saint Joe 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 Port Saint Joe typically reaches 10, which falls under the very high exposure category.

Data source: Port Saint Joe 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 Port Saint Joe Compares to Other Months

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

This table compares monthly weather conditions in Port Saint Joe, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (57°F)	92 mm (3.6 inches)	81%	moderate
February Weather	16°C (61°F)	102 mm (4.0 inches)	81%	very high
March Weather	18°C (65°F)	36 mm (1.4 inches)	80%	very high
April Weather	20°C (69°F)	92 mm (3.6 inches)	80%	extreme
May Weather	24°C (76°F)	89 mm (3.5 inches)	77%	extreme
June Weather	27°C (81°F)	174 mm (6.8 inches)	73%	extreme
July Weather	28°C (82°F)	170 mm (6.7 inches)	77%	extreme
August Weather	28°C (82°F)	225 mm (8.9 inches)	76%	extreme
September Weather	27°C (81°F)	187 mm (7.4 inches)	79%	very high
October Weather	24°C (76°F)	126 mm (5.0 inches)	77%	very high
November Weather	18°C (65°F)	49 mm (1.9 inches)	81%	high
December Weather	16°C (61°F)	126 mm (5.0 inches)	83%	moderate