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

Brunswick, Malcolm McKinnon Airport (KSSI)

Lat: 31.15°NLon: 81.39°WElev: 20ft.

Fair

75°F

24°C

Humidity 89%
Wind Speed N 5 mph
Barometer 30.11 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 18 Sep 4:55 am EDT
Extended Forecast for

Sea Island GA

  • Today

    Today: Mostly sunny, with a high near 88. East wind 5 to 11 mph, with gusts as high as 17 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 75. East wind around 5 mph becoming calm after midnight.

    Low: 75 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 89. Calm wind becoming east 5 to 8 mph in the morning.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 75. Southeast wind around 6 mph becoming calm in the evening.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 88. Calm wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 88. East wind 5 to 11 mph, with gusts as high as 17 mph.
Tonight
Partly cloudy, with a low around 75. East wind around 5 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 89. Calm wind becoming east 5 to 8 mph in the morning.
Saturday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 75. Southeast wind around 6 mph becoming calm in the evening.
Sunday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 88. Calm wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74.
Monday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Sea Island GA
 31.18°N 81.36°W
Last Update:
3:36 am EDT Sep 18, 2026
Forecast Valid:
5am EDT Sep 18, 2026-6pm EDT Sep 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation