Last updated: June 24, 2025
In March, the average temperature in Charleston, United States is a comfortable 13°C (55°F). However, be prepared for a range of temperatures, as it can dip to a chilly -8°C (17°F) or soar to a warm 33°C (91°F). Expect 131 mm (5.1 in) of precipitation spread over 14 days, contributing to an average humidity level of 77%.
In March in Charleston, the average temperature is 13°C (55°F), with maximums that can reach 33°C (91°F) and minimums that can drop as low as -8°C (17°F). This wide temperature range makes it essential to pack for both warm and chilly conditions while traveling.
In Charleston in March, the total precipitation amount is 131 mm (5.1 in) over a span of 14 days.
In Charleston in March humidity is 77%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill in the air, making travel somewhat uncomfortable as the moisture clings to your skin and adds a heavier weight to your clothing, which can sap your energy as you explore.
In Charleston in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Charleston.
UV Risk Categories
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.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 5°C (41°F) | 80 mm (3.1 inches) | 82% | moderate |
February Weather | 7°C (45°F) | 116 mm (4.6 inches) | 79% | high |
March Weather | 13°C (55°F) | 131 mm (5.1 inches) | 77% | very high |
April Weather | 16°C (61°F) | 161 mm (6.3 inches) | 78% | very high |
May Weather | 21°C (70°F) | 197 mm (7.8 inches) | 82% | extreme |
June Weather | 26°C (78°F) | 109 mm (4.3 inches) | 81% | extreme |
July Weather | 28°C (82°F) | 87 mm (3.4 inches) | 75% | extreme |
August Weather | 27°C (80°F) | 125 mm (4.9 inches) | 61% | very high |
September Weather | 25°C (76°F) | 59 mm (2.3 inches) | 59% | very high |
October Weather | 17°C (64°F) | 113 mm (4.5 inches) | 69% | high |
November Weather | 10°C (51°F) | 76 mm (3.0 inches) | 82% | moderate |
December Weather | 8°C (47°F) | 90 mm (3.5 inches) | 87% | moderate |