Charleston weather in July 2025

Q: How hot is it in Charleston in July?

Daytime temperatures usually reach 31°C in Charleston in July with very high heat and humidity, falling to 24°C at night.

Q: How sunny is it in Charleston in July?

There are normally 9 hours of bright sunshine each day in Charleston in July - that's 66% of daylight hours.

Q: How warm is the sea around Charleston in July?

The average sea temperature around Charleston in July is 28°C.

Q: Does it rain in Charleston in July?

There are usually 12 days with some rain in Charleston in July and the average monthly rainfall is 161mm.

Q: What is the chance of a cyclone in Charleston in July?

On average less than 1 day in July in Charleston is likely to be affected by the passage of one or more tropical storms.

Expect daytime maximum temperatures of 31°C in Charleston, South Carolina in July and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 12 days with some rainfall and typically 161 mm of rainfall in the month.

31
31°C max day temperature
9
9 hours of sunshine per day
12
12 days with some rainfall
24
24°C min night temperature
14
14 hours of daylight per day
VH
Very High heat & humidity
161
161 mm of monthly rainfall
10
10 (Very High) UV index
28
28°C sea temperature

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The July weather guide for South Carolina (Charleston) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

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How hot is it in Charleston in July?

Daytime temperatures usually reach 31°C in Charleston in July with very high heat and humidity, falling to 24°C at night.

How sunny is it in Charleston in July?

There are normally 9 hours of bright sunshine each day in Charleston in July - that's 66% of daylight hours.

How warm is the sea around Charleston in July?

The average sea temperature around Charleston in July is 28°C.

Does it rain in Charleston in July?

There are usually 12 days with some rain in Charleston in July and the average monthly rainfall is 161mm.

What is the chance of a hurricane in Charleston in July?

On average less than 1 day in July in Charleston is likely to be affected by the passage of one or more tropical storms.

Charleston July sunrise & sunset times

Browse the sunrise and sunset times for Charleston in July 2025. Select a month to view Charleston sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Tuesday, 1st July 2025	05:15	19:32
Wednesday, 16th July 2025	05:23	19:28
Thursday, 31st July 2025	05:33	19:19

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South Carolina - quick facts
Flight time^✝	11.5 hours
Time difference	UK -5 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Beaches Culture
Tourist info	South Carolina Department of Parks, Recreation & Tourism