Charleston Weather in July

The climate in Charleston during July can be summarized as hot, humid and damp.

July is in the summer in Charleston and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (86°F), whilst at night 19°C (65°F) is normal.

On average July is the wettest month of the year in Charleston with around 108mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.9 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Charleston in July 2024.