September Weather in Bayport, United States

Last updated: June 24, 2025

In Bayport, United States, the average temperature in September is a pleasant 18°C (64°F). However, temperatures can vary significantly, with a minimum of 1°C (34°F) and a maximum reaching 33°C (91°F). Expect about 110 mm (4.3 in) of precipitation spread over 9 days, contributing to the 81% average humidity that defines the climate during this month.

September Temperature in Bayport

In September in Bayport, the average temperature is 18°C (64°F). The maximum can reach 33°C (91°F), and the minimum can be as low as 1°C (34°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cool weather.

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

The chart illustrates September temperature patterns in Bayport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bayport, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Bayport

In Bayport in September, the precipitation amount is 110 mm (4.3 in) over the course of 9 days.

September Precipitation Trends in Bayport

The chart displays monthly precipitation patterns in Bayport, 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 Bayport, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 9 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 Bayport

In Bayport in September, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

September Average Humidity in Bayport

This chart illustrates the average monthly humidity levels in Bayport, 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 Bayport is approximately 81%, 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 Bayport

In Bayport in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Bayport.

Maximum UV Index Levels in Bayport for September

The chart shows the monthly maximum UV Index (UVI) for Bayport 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 Bayport typically reaches 7, which falls under the high exposure category.

Data source: Bayport 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 Bayport Compares to Other Months

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

This table compares monthly weather conditions in Bayport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	29 mm (1.1 inches)	87%	low
February Weather	-8°C (17°F)	38 mm (1.5 inches)	90%	moderate
March Weather	0°C (33°F)	56 mm (2.2 inches)	85%	moderate
April Weather	6°C (43°F)	87 mm (3.4 inches)	84%	high
May Weather	15°C (59°F)	134 mm (5.3 inches)	78%	very high
June Weather	21°C (71°F)	103 mm (4.1 inches)	80%	very high
July Weather	23°C (74°F)	104 mm (4.1 inches)	81%	very high
August Weather	21°C (70°F)	122 mm (4.8 inches)	81%	very high
September Weather	18°C (64°F)	110 mm (4.3 inches)	81%	high
October Weather	9°C (48°F)	102 mm (4.0 inches)	84%	moderate
November Weather	0°C (33°F)	39 mm (1.5 inches)	88%	moderate
December Weather	-5°C (23°F)	55 mm (2.2 inches)	84%	low