UV Index
UV Index
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Today's UV index in Charleston, United States 
will be up to 5, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 5 in Charleston, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Charleston, South Carolina typically experiences high UV indexes throughout the year, with average levels ranging from 4-8, indicating moderate to very high risk of UV radiation damage.
The city has a humid subtropical climate, characterized by mild winters, hot and humid summers, and distinct spring and autumn seasons. Summer temperatures often reach the mid-80s to low 90s Fahrenheit, while winter temperatures range from the mid-30s to mid-50s.
Compared to the Southeast region, Charleston's climate is relatively mild, with temperatures similar to those in Savannah, Georgia, and Wilmington, North Carolina. However, it has a more subtropical climate than neighboring cities in the Northeast, such as Washington, D.C. and Richmond, Virginia.