Charleston Weather Forecast

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Last Updated: January 2, 2026

Charleston, South Carolina is a historic city located on the coast that experiences a humid subtropical climate.


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Summary

Summers are hot and humid with frequent thunderstorms, while winters are mild with occasional freezing temperatures. The city is surrounded by rivers, creeks, and marshes, and is susceptible to flooding during heavy rain events and hurricanes. The hydrology constituents of the area include sediment, nutrients, and pollutants that can impact the health of the local waterways. Despite these challenges, Charleston offers a wealth of outdoor recreation opportunities, including fishing, boating, kayaking, and paddleboarding in its waterways, as well as hiking and biking in nearby parks and nature preserves.

       

Weather Forecast

Charleston receives approximately 1161mm of rain per year, with humidity levels near 86% and air temperatures averaging around 19°C. Charleston has a plant hardyness factor of 9, meaning plants and agriculture in this region tend to thrive here all year round.