Current Weather and Forecast in Charleston, SC
South Carolina, United States 🇺🇸
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Explore Charleston's typical temperatures and climate below - Live data returns shortly.
About the weather in Charleston
Charleston has a humid subtropical climate. July is the warmest month, with average highs of 88°, and January the coldest, when nights fall to around 44°. August brings the most rain, on about 19 days, while June is the sunniest, with 11.6 hours of sunshine a day. Over a whole year it rains on roughly 136 days.
Charleston climate guide: monthly averages, seasons and the best time to visit
Common questions
What is the coldest month in Charleston?
January, with highs of 58°F (15°C) and lows near 44°F (7°C). The coldest day in the 2015-2024 record fell to 11°F (-11°C).
How sunny is Charleston?
9.6 hours a day averaged over the year, peaking in June at 11.6 hours.
Is there snow in Charleston?
Effectively no. The 2015-2024 record for Charleston shows no regular measurable snowfall.
Which month is warmest in Charleston?
July, averaging 88°F (31°C) by day and 77°F (25°C) overnight. The hottest single day in our 2015-2024 record for this location reached 98°F (37°C).
What is the best time to visit Charleston?
The best time to visit Charleston is generally February to May and October to November, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window sit near 71°F (22°C), with rain on about 9 days a month. For the same question asked the other way round, see where else is warm in February.
What is the rainiest month in Charleston?
August, at 7.0 inches (177 mm) over about 19 days. March is the driest month, at 3.0 inches (77 mm).