USA
Charleston in July: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Charleston in July is climatically mixed. The average daily high is around 32 °C, and the sea is about 28 °C. With about 21 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
49/100 · #11
Warmth
#1
Dryness
#12
Sun
#3
Sea warmth
#2
Published best categories: none
Charleston · JulyPhoto: Something Original ( talk ) · CC BY-SA 3.0Climate facts
- Average high
- 32 °C
- Average low
- 24 °C
- Sea
- 28 °C
- Rainy days (est.)
- 21 rainy days (est.)
- Sun (est.)
- 8 h/day
- Humidity
- 77 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| June | 31 | 22 | 18 | 139 | 7.9 | 76 | 1.2 | 26 | 58 |
| July (selected) | 32 | 24 | 21 | 153 | 7.7 | 77 | 1.2 | 28 | 49 |
| August | 32 | 24 | 21 | 173 | 6.8 | 79 | 1.1 | 28 | 51 |
How do the previous and next months compare?
Baseline: July (49/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| June | +9 | -1.2 °C | -1.8 °C | -3.5 | -13.7 mm | +0.2 h | -1.4 % | ±0 m/s | -1.9 °C |
| August | +2 | -0.8 °C | -0.6 °C | -0.6 | +19.6 mm | -0.9 h | +2.1 % | -0.1 m/s | +0.1 °C |
All twelve months in context
Find a place to stay
Where to stay in Charleston
Compare available stays, prices and cancellation terms for Charleston on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Charleston in July?
The average daily high is around 32 °C, with an average daily low of about 24 °C.
Can you swim in Charleston in July?
The sea is about 28 °C (very warm).
Does it rain a lot in Charleston in July?
The curated estimate is about 21 rainy days per month, not a directly measured long-term average. Total precipitation averages around 153 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Charleston?
By the climate score, April, May, October and November are the strongest months for Charleston. For a beach trip: May, June, September and October. July is not among them.