September Weather in Walterboro, United States

Last updated: June 24, 2025

In September, the average temperature in Walterboro, United States hovers around 25°C (77°F), offering a pleasant climate for outdoor activities. Temperatures can vary, with a minimum of 10°C (51°F) and soaring highs reaching 36°C (98°F). Expect 110 mm (4.3 in) of precipitation spread across 12 days, and a humidity level of 83%. Whether you're seeking sunny days or occasional rain showers, the weather this month has something for everyone!

September Temperature in Walterboro

In September in Walterboro, the average temperature is 25°C (77°F). The maximum can reach 36°C (98°F) and the minimum can be as low as 10°C (51°F). This range makes it an ideal time for travelers seeking pleasant weather and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Walterboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walterboro, September typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (98°F) and lows dropping to around 10°C (51°F).

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

September Precipitation in Walterboro

In Walterboro in September, the precipitation amount is 110 mm (4.3 in) over a span of 12 days.

September Precipitation Trends in Walterboro

The chart displays monthly precipitation patterns in Walterboro, 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 Walterboro, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 12 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 Walterboro

In Walterboro in September humidity is 83%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket, making it essential for travelers to stay hydrated and seek shade to enjoy their adventures comfortably.

September Average Humidity in Walterboro

This chart illustrates the average monthly humidity levels in Walterboro, 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 Walterboro is approximately 83%, 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 Walterboro

In Walterboro 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 Walterboro.

Maximum UV Index Levels in Walterboro for September

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

Data source: Walterboro 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 Walterboro Compares to Other Months

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

This table compares monthly weather conditions in Walterboro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	70 mm (2.8 inches)	86%	moderate
February Weather	13°C (56°F)	101 mm (4.0 inches)	81%	high
March Weather	15°C (60°F)	70 mm (2.8 inches)	81%	very high
April Weather	19°C (66°F)	116 mm (4.6 inches)	79%	very high
May Weather	23°C (74°F)	98 mm (3.9 inches)	75%	extreme
June Weather	26°C (79°F)	138 mm (5.4 inches)	75%	extreme
July Weather	27°C (81°F)	168 mm (6.6 inches)	80%	extreme
August Weather	27°C (81°F)	161 mm (6.3 inches)	81%	extreme
September Weather	25°C (77°F)	110 mm (4.3 inches)	83%	very high
October Weather	21°C (70°F)	70 mm (2.8 inches)	78%	very high
November Weather	14°C (57°F)	67 mm (2.6 inches)	85%	high
December Weather	11°C (53°F)	124 mm (4.9 inches)	87%	moderate