May Weather in Bluffton, United States

Last updated: June 24, 2025

In May, the average temperature in Bluffton, United States is a pleasant 17°C (63°F). However, temperatures can vary significantly, with a minimum of -1°C (30°F) and a maximum of 34°C (94°F). Expect about 126 mm (4.9 in) of precipitation spread over 15 days, contributing to an average humidity of 81%. Whether you’re enjoying warm days or cool nights, be prepared for a diverse climate!

May Temperature in Bluffton

In May in Bluffton, the average temperature is 17°C (63°F), with maximums reaching 34°C (94°F) and minimums dropping as low as -1°C (30°F). This variation makes it an ideal time for travelers to pack both light clothing for warm days and warmer layers for chilly nights.

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

The chart illustrates May temperature patterns in Bluffton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bluffton, May typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (94°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Bluffton

In Bluffton in May, the precipitation amount is 126 mm (4.9 in) over the course of 15 days.

May Precipitation Trends in Bluffton

The chart displays monthly precipitation patterns in Bluffton, 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 Bluffton, May typically receives around 126 mm (4.9 inches) of precipitation spread over approximately 15 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 Bluffton

In Bluffton in May humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

May Average Humidity in Bluffton

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

In Bluffton in May, 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 Bluffton.

Maximum UV Index Levels in Bluffton for May

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

Data source: Bluffton 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 Bluffton Compares to Other Months

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

This table compares monthly weather conditions in Bluffton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	75 mm (2.9 inches)	85%	moderate
February Weather	0°C (31°F)	84 mm (3.3 inches)	85%	moderate
March Weather	5°C (41°F)	102 mm (4.0 inches)	86%	high
April Weather	10°C (51°F)	93 mm (3.7 inches)	87%	very high
May Weather	17°C (63°F)	126 mm (4.9 inches)	81%	very high
June Weather	22°C (73°F)	110 mm (4.3 inches)	82%	very high
July Weather	25°C (76°F)	105 mm (4.1 inches)	81%	very high
August Weather	23°C (74°F)	97 mm (3.8 inches)	79%	very high
September Weather	20°C (69°F)	67 mm (2.6 inches)	78%	very high
October Weather	14°C (57°F)	101 mm (4.0 inches)	81%	high
November Weather	5°C (41°F)	82 mm (3.2 inches)	89%	moderate
December Weather	2°C (35°F)	64 mm (2.5 inches)	86%	low