Charleston weather
Our guide to the weather in Charleston during August
We've looked at the most up-to-date weather data for Charleston, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Charleston weather in August.
How hot is it in Charleston during August?
Expect heat in Charleston during August. The temperature hits about 31℃ during the day, falling away to a balmy 25℃ at night. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.
Does it rain in Charleston during August?
August is typically the wettest month in Charleston. On average, there will be 14 rainy days during the month, amounting to 323.2mm in total. That's a lot of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, August will see just 5 days that produce a storm.
Is it windy in Charleston during August?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in August. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.
Charleston Blog posts
From the UK's most popular travel bloggers
3 days in Charleston itinerary: Perfect weekend in Charleston
31st October 2022 by PommieTravels
With its colorful buildings, vibrant foodie scene and sandy beaches, Charleston is one of those destinations that has a bit of everything and is perfect for a long weekend. The city also happens to be just a two-hour flight from New York, so if you live in the Big Apple like me, it’s an easy trip if you can’t get much time off work. 3 days in Charleston are enough to cover the best things to do there and eat at some of the city’s best restaurants. Plus, the weather is much milder down in...
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