September Weather in Swepsonville, United States

Last updated: June 24, 2025

In September, the average temperature in Swepsonville, United States is a pleasant 23°C (74°F). However, it can range from a cool minimum of 7°C (45°F) to a sizzling maximum of 36°C (96°F). Expect 129 mm (5.1 in) of precipitation over about 10 days, contributing to a cozy average humidity of 79%.

September Temperature in Swepsonville

In September in Swepsonville, the average temperature is 23°C (74°F). Maximums can reach 36°C (96°F) and minimums can drop as low as 7°C (45°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your visit.

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

The chart illustrates September temperature patterns in Swepsonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Swepsonville, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (96°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Swepsonville

In Swepsonville in September, the precipitation amount is 129 mm (5.1 in) over a span of 10 days.

September Precipitation Trends in Swepsonville

The chart displays monthly precipitation patterns in Swepsonville, 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 Swepsonville, September typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 10 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 Swepsonville

In Swepsonville in September, humidity is 79%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities a bit less comfortable, urging travelers to seek shade and hydration throughout the day.

September Average Humidity in Swepsonville

This chart illustrates the average monthly humidity levels in Swepsonville, 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 Swepsonville 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 Swepsonville

In Swepsonville 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 Swepsonville.

Maximum UV Index Levels in Swepsonville for September

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

Data source: Swepsonville 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 Swepsonville Compares to Other Months

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

This table compares monthly weather conditions in Swepsonville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (42°F)	90 mm (3.5 inches)	85%	moderate
February Weather	9°C (48°F)	116 mm (4.6 inches)	82%	high
March Weather	11°C (52°F)	83 mm (3.2 inches)	81%	very high
April Weather	16°C (61°F)	113 mm (4.4 inches)	80%	very high
May Weather	21°C (70°F)	117 mm (4.6 inches)	81%	extreme
June Weather	24°C (76°F)	119 mm (4.7 inches)	81%	extreme
July Weather	27°C (80°F)	111 mm (4.4 inches)	81%	extreme
August Weather	25°C (78°F)	134 mm (5.3 inches)	80%	very high
September Weather	23°C (74°F)	129 mm (5.1 inches)	79%	very high
October Weather	18°C (64°F)	94 mm (3.7 inches)	80%	very high
November Weather	10°C (50°F)	80 mm (3.1 inches)	85%	moderate
December Weather	8°C (46°F)	106 mm (4.2 inches)	86%	moderate