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May Weather in Mount Pleasant, United States

Last updated: June 24, 2025

In May, the average temperature in Mount Pleasant, United States hovers around 8°C (47°F), with a minimum dipping to 1°C (34°F) and a maximum reaching up to 18°C (65°F). Expect some wet weather, as 148 mm (5.8 in) of precipitation is spread over 13 days during the month. The air remains relatively humid, with an average humidity level of 78%.

May Temperature in Mount Pleasant

In May in Mount Pleasant, the average temperature is 8°C (47°F). The maximum can reach 18°C (65°F), and the minimum can be as low as 1°C (34°F). Be sure to pack both warm layers and lighter clothing for your travels, as the weather can vary significantly throughout the day.

May Weather in Mount Pleasant: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Mount Pleasant, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Pleasant, May typically has an average temperature of 8°C (47°F), with highs reaching up to 18°C (65°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec272834394758687166544034
Data source: Temperature data for Mount Pleasant generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Mount Pleasant

In Mount Pleasant in May, the precipitation amount is 148 mm (5.8 in) occurring over the course of 13 days.

May Precipitation Trends in Mount Pleasant

The chart displays monthly precipitation patterns in Mount Pleasant, 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 Mount Pleasant, May typically receives around 148 mm (5.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec757476112148876158861436864
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mount Pleasant

In Mount Pleasant in May, humidity is 78%. With an average temperature of 8°C (47°F), this humidity feels like a chilly embrace, making travel invigorating yet damp, as the cool air wraps around you, emphasizing the need for layers to stay comfortable while exploring.

May Average Humidity in Mount Pleasant

This chart illustrates the average monthly humidity levels in Mount Pleasant, 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 Mount Pleasant is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mount Pleasant

In Mount Pleasant 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 Mount Pleasant.

Maximum UV Index Levels in Mount Pleasant for May

The chart shows the monthly maximum UV Index (UVI) for Mount Pleasant 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 Mount Pleasant typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Mount Pleasant 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 Mount Pleasant Compares to Other Months

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

This table compares monthly weather conditions in Mount Pleasant, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)75 mm (2.9 inches)85%low
February Weather-2°C (28°F)74 mm (2.9 inches)85%moderate
March Weather1°C (34°F)76 mm (3.0 inches)85%moderate
April Weather4°C (40°F)112 mm (4.4 inches)85%very high
May Weather8°C (47°F)148 mm (5.8 inches)78%very high
June Weather15°C (59°F)87 mm (3.4 inches)80%very high
July Weather20°C (69°F)61 mm (2.4 inches)78%very high
August Weather21°C (71°F)58 mm (2.3 inches)76%very high
September Weather19°C (66°F)86 mm (3.4 inches)79%high
October Weather12°C (54°F)143 mm (5.6 inches)83%moderate
November Weather4°C (40°F)68 mm (2.7 inches)88%moderate
December Weather1°C (34°F)64 mm (2.5 inches)81%low

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