March Weather in Charleston, United States

Last updated: June 24, 2025

In March, the average temperature in Charleston, United States hovers around 10°C (51°F). However, temperatures can vary significantly, with a chilly minimum of -11°C (13°F) and a warm maximum reaching up to 27°C (80°F). During this month, you can expect 169 mm (6.6 in) of precipitation spread over about 14 days, contributing to an average humidity level of 84%.

March Temperature in Charleston

In March in Charleston, the average temperature is 10°C (51°F). Maximums can reach 27°C (80°F), while minimums can dip as low as -11°C (13°F). Be prepared for a wide range of temperatures during your travels.

March Weather in Charleston: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Charleston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Charleston, March typically has an average temperature of 10°C (51°F), with highs reaching up to 27°C (80°F) and lows dropping to around -11°C (13°F).

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

March Precipitation in Charleston

In Charleston in March, the precipitation amount is 169 mm (6.6 in) over the course of 14 days.

March Precipitation Trends in Charleston

The chart displays monthly precipitation patterns in Charleston, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Charleston, March typically receives around 169 mm (6.6 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Charleston

In Charleston in March humidity is 84%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill enveloping you, making even short distances feel burdensome and leaving you longing for a cozy indoor refuge while exploring the area.

March Average Humidity in Charleston

This chart illustrates the average monthly humidity levels in Charleston, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Charleston is approximately 84%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Charleston

In Charleston in March, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Charleston.

Maximum UV Index Levels in Charleston for March

The chart shows the monthly maximum UV Index (UVI) for Charleston in March, 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 March, the maximum UV index in Charleston typically reaches 7, which falls under the high exposure category.

Data source: Charleston March 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 March Weather in Charleston Compares to Other Months

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

This table compares monthly weather conditions in Charleston, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	110 mm (4.3 inches)	86%	moderate
February Weather	5°C (41°F)	139 mm (5.5 inches)	84%	high
March Weather	10°C (51°F)	169 mm (6.6 inches)	84%	high
April Weather	14°C (58°F)	140 mm (5.5 inches)	80%	very high
May Weather	21°C (70°F)	151 mm (6.0 inches)	82%	extreme
June Weather	25°C (78°F)	112 mm (4.4 inches)	83%	extreme
July Weather	27°C (81°F)	101 mm (4.0 inches)	79%	very high
August Weather	25°C (78°F)	102 mm (4.0 inches)	76%	very high
September Weather	23°C (74°F)	85 mm (3.3 inches)	75%	very high
October Weather	16°C (62°F)	122 mm (4.8 inches)	74%	high
November Weather	8°C (47°F)	101 mm (4.0 inches)	85%	moderate
December Weather	6°C (43°F)	97 mm (3.8 inches)	88%	moderate