Last updated: June 24, 2025
In Charleston, United States, the average temperature in March hovers around 9°C (48°F), with a noticeable range from a chilly -12°C (12°F) to a warm 29°C (84°F). Be prepared for some moisture as 119 mm (4.7 in) of precipitation graces the area over 13 days, contributing to the notably high average humidity of 88%.
In March in Charleston, the average temperature is 9°C (48°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as -12°C (12°F). This diverse range of temperatures means that travelers should be prepared for both warm days and chilly nights.
In Charleston in March, the precipitation amount is 119 mm (4.7 in) spread over 13 days.
In Charleston in March, humidity is 88%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill settling into your bones, making outdoor exploration feel heavy and oppressive.
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.
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 | 2°C (37°F) | 101 mm (4.0 inches) | 88% | moderate |
February Weather | 5°C (42°F) | 152 mm (6.0 inches) | 88% | moderate |
March Weather | 9°C (48°F) | 119 mm (4.7 inches) | 88% | high |
April Weather | 13°C (56°F) | 134 mm (5.3 inches) | 86% | very high |
May Weather | 19°C (66°F) | 159 mm (6.3 inches) | 82% | very high |
June Weather | 22°C (72°F) | 154 mm (6.1 inches) | 84% | very high |
July Weather | 25°C (77°F) | 124 mm (4.9 inches) | 82% | very high |
August Weather | 23°C (74°F) | 114 mm (4.5 inches) | 73% | very high |
September Weather | 21°C (70°F) | 103 mm (4.0 inches) | 73% | very high |
October Weather | 16°C (61°F) | 117 mm (4.6 inches) | 81% | high |
November Weather | 8°C (46°F) | 78 mm (3.1 inches) | 89% | moderate |
December Weather | 5°C (41°F) | 124 mm (4.9 inches) | 86% | moderate |