National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Fair

81°F

27°C

Humidity 100%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 81°F (27°C)
Visibility 9.00 mi
Heat Index91°F (33°C)
Last update 19 Aug 5:35 am EDT
Extended Forecast for

Seabrook Island SC

Heat Advisory August 19, 11:00am until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 89. Heat index values as high as 105. West wind 5 to 10 mph becoming south in the afternoon.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 83. Southwest wind 5 to 8 mph.

    Low: 83 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Heat index values as high as 103. Light and variable wind becoming south 6 to 11 mph in the morning.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 82. South wind 11 to 13 mph.

    Low: 82 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 87. South wind 7 to 14 mph.

    High: 87 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 80.

    Low: 80 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 86.

    High: 86 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 79.

    Low: 79 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 89. Heat index values as high as 105. West wind 5 to 10 mph becoming south in the afternoon.
Tonight
Mostly clear, with a low around 83. Southwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 87. Heat index values as high as 103. Light and variable wind becoming south 6 to 11 mph in the morning.
Thursday Night
Mostly clear, with a low around 82. South wind 11 to 13 mph.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 87. South wind 7 to 14 mph.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 80.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 86.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 79.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 80.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 87.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Seabrook Island SC
 32.56°N 80.17°W (Elev. 7 ft)
Last Update:
5:02 am EDT Aug 19, 2026
Forecast Valid:
5am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation