May Weather in Summerville, United States

Last updated: June 24, 2025

In Summerville, United States during May, the average temperature hovers around 23°C (74°F). Expect a pleasant range, with minimum temperatures dipping to 7°C (44°F) and maximums soaring up to 39°C (102°F). Be prepared for some rain, as 92 mm (3.6 in) of precipitation can fall over the course of 9 days. With an average humidity of 75%, it's a perfect time to enjoy the climate!

May Temperature in Summerville

In May in Summerville, the average temperature is 23°C (74°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 7°C (44°F). This diverse temperature range makes it essential for travelers to pack appropriately for both warm and cool conditions.

May Weather in Summerville: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Summerville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Summerville, May typically has an average temperature of 23°C (74°F), with highs reaching up to 39°C (102°F) and lows dropping to around 7°C (44°F).

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

May Precipitation in Summerville

In Summerville in May, the precipitation amount is 92 mm (3.6 in) during 9 days, indicating a relatively wet period for the region.

May Precipitation Trends in Summerville

The chart displays monthly precipitation patterns in Summerville, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Summerville, May typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Summerville

In Summerville in May, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

May Average Humidity in Summerville

This chart illustrates the average monthly humidity levels in Summerville, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Summerville is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Summerville

In Summerville in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Summerville.

Maximum UV Index Levels in Summerville for May

The chart shows the monthly maximum UV Index (UVI) for Summerville in May, 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 May, the maximum UV index in Summerville typically reaches 11, which falls under the extreme exposure category.

Data source: Summerville May 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 May Weather in Summerville Compares to Other Months

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

This table compares monthly weather conditions in Summerville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	64 mm (2.5 inches)	86%	moderate
February Weather	13°C (56°F)	92 mm (3.6 inches)	81%	high
March Weather	15°C (60°F)	71 mm (2.8 inches)	81%	very high
April Weather	19°C (66°F)	108 mm (4.2 inches)	79%	very high
May Weather	23°C (74°F)	92 mm (3.6 inches)	75%	extreme
June Weather	26°C (79°F)	156 mm (6.1 inches)	75%	extreme
July Weather	27°C (81°F)	191 mm (7.5 inches)	80%	extreme
August Weather	27°C (81°F)	176 mm (6.9 inches)	81%	extreme
September Weather	25°C (77°F)	146 mm (5.8 inches)	83%	very high
October Weather	21°C (70°F)	75 mm (3.0 inches)	78%	very high
November Weather	14°C (57°F)	70 mm (2.8 inches)	85%	high
December Weather	12°C (53°F)	132 mm (5.2 inches)	87%	moderate