Temperature
Hot by day, warm at night.
86°Ftypical Aug high
Charleston
United States · North America
Charleston is most comfortable in spring. Summers are hot and winters are mild.
Best time to go
12 mo · Typical year
Temperature range
43°F to 88°F
Rain
12 days/mo
Sunshine
9.5 h/day
Humidity feel
Sometimes humid
When to visit
Month-by-month fit
Precipitation
One of the wettest months.
68%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
10.8 hAug sunshine
Heat & humidity by month
Warm days, with some hot afternoons and occasional humid spells.
Very humidAug heat feel
Air-feel chart data is unavailable for this destination. Use the selected-month dew point, temperature, rain, and sunshine context together rather than treating any one metric as total comfort.
Sea temperature
84°Aug sea temp
More detailIncludes sky and daypart comfort
Cloud cover
Partly cloudy across the month.
40%Aug clear sky
ClearCloud cover
Similar
Similar things to doHong KongChinaSimilar things to doMiamiUnited StatesSimilar things to doShanghaiChinaSimilar things to doJohns IslandUnited States
Want a side-by-side climate view? Compare Charleston with Hong Kong.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology