Charleston Weather in July 2026: what to expect (5.0/10)

The month in detail

What to expect in July

In the height of summer, Charleston sees high temperatures (31.0°F). Heat is a factor for outdoor activities. With 57.0% of rainy days, always have indoor alternatives planned.

July ranks 9 out of 12 months in Charleston. Compared to June: +4°F daytime.

This month's conditions

What it's like in July

UV index

8 · very high

protection essential

Feels like

very humid

24°

Sea

30°C

warm, ideal

Daylight

14.0h of daylight

Air quality

fair

AQI 40

Compare

Is July the right month?

The best month in Charleston is April (8.3/10), 3.3 pts higher than July.

See April →See all 12 months →

Context

Our verdict

Charleston, in South Carolina: 150,000 inhabitants, English colonial city (1670), preserved historic center, major role in slavery and the Civil War. Regularly ranked among the most beautiful cities in the USA.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

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Stay

Hotels & rentals · Charleston

Expedia →

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Activities

Tours, tickets, experiences

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Flights

Multi-airline comparator

Kiwi →

🎟️ Activities & tours · Charleston

GetYourGuide selection · free cancellation

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Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.

Country · United States

🗣️LanguageEnglish

💶CurrencyUS Dollar ($)

🚗DrivingRight-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘExpensive · 4/5

🌡️ Climate

🌍Climate typeTemperate oceanic

📈Climate trend ⓘStable

🔥Hottest monthJuly · 88°F

❄️Coolest monthJanuary · 57°F

🌧️Rainiest month ⓘAugust · 64%

🏖️ Beach trip

📅Peak seasonJuin → Sept

🏖️Swell (Sept–Mar) ⓘModérée

Explore

Other destinations in July

If July doesn't convince you for this destination, compare with others.

Similar climate

SavannahUnited States

New OrleansUSA

ShanghaiChina

Saint AugustineUnited States

NagasakiJapan

Nearby

AshevilleUnited States394 km

OrlandoUSA491 km

Outer BanksUnited States514 km

Washington DCUSA730 km

Other top picks

Sharm el-SheikhEgypt5.1

🗺️ See all 754 destinations on the map

Location

Where is Charleston ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

United States

Temperate oceanic climate with a 8.3 → 4.3 gap between best and worst month. 10 years of ERA5 data to choose by project.

32.78°N · 79.93°W

Questions

Frequently asked questions

What is the best time to visit Charleston?

April is the best month with 75°F highs, 61°F lows, 8.2h of sunshine and 24.0% rainy days. The months of April & May offer comparable conditions.

How many hours of sunshine does Charleston get in April?

Charleston averages 8.2 sunshine hours per day in April. It is the sunniest month with a climate score of 7.8/10.

What is the rainiest month in Charleston?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in Charleston in April?

In April, overnight lows reach 61°F, while afternoon highs average 75°F.

Is Charleston good in winter?

In winter (December-February), Charleston scores 5.1/10 on average — Difficult period — prefer the peak season.. The best month overall remains April with a score of 7.8/10.

When should you avoid Charleston?

January is the most difficult month to visit Charleston, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Can you swim in Charleston in July?

In July, the sea averages 87°F in Charleston: warm, ideal. Ideal conditions for swimming and snorkeling.

Do you need sun protection in Charleston in July?

The average UV index reaches 8 in July in Charleston (very high), with about 14.0h of daylight. Protection essential.