Charleston Weather in July
July in Charleston brings very high temperatures, with daytime highs of 32°C (90°F) and nights around 24°C (75°F). Quite a bit of rainfall is expected, around 129 mm (5.1 in), so pack an umbrella.
Rainfall in Charleston in July
This month experiences about 15 days of rain according to historical data, averaging 129 mm (5.1 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Charleston in July
In July, Charleston sees very high temperatures, with highs of 32°C (90°F). Nights drop to around 24°C (75°F). It's usually most comfortable outside during the morning and later in the day. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference. Typical temperatures can be misleading; some days will be hotter. Prepare with light clothing and plenty of hydration to stay cool.
Sunshine in Charleston in July
With approximately 288 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If you prefer enjoying temperate temperatures and rain-free days, April and May typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Charleston's climate page.
Charleston Temperature in July
Min Temperature
24°C (75°F)
Max Temperature
32°C (90°F)
Chance of Rain
51%
Precipitation
129 mm (5.1 in)
Rainy days
15 days
Humidity
76%
Sunshine
288 hours
Percentage Sunshine
66%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Charleston typically stay consistent throughout July, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Charleston in July
Browse day-by-day weather records for Charleston spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Charleston historical weather extremes in July
Based on weather observations in Charleston between 1976 and 2025, these are the recorded extremes during July.
- The hottest July day on record in Charleston reached 39°C (102°F) (July 19, 1986).
- The coldest July day was on July 31, 1997, with a maximum of 21°C (70°F).
- The lowest overnight temperature recorded in July was 17°C (63°F) (July 4, 2010).
Best Places in the United States of America in July
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →
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What to Wear in Charleston in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Charleston in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Charleston's climate page.
Temperature Rainfall Sunshine Humidity
See the full Charleston climate overview or explore weather in the United States of America.
