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

81°F

27°C

Humidity 79%
Wind Speed E 5 mph
Barometer 30.04 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 18 Sep 7:55 pm EDT
Extended Forecast for

Sea Island GA

  • Tonight

    Tonight: Mostly cloudy, with a low around 76. East wind 5 to 8 mph becoming calm after midnight.

    Low: 76 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 88. Light and variable wind becoming east 5 to 8 mph in the morning.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 10 percent chance of showers after 5am. Partly cloudy, with a low around 76. Southeast wind around 6 mph becoming calm in the evening.

    Low: 76 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Light and variable wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 76. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 76 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.

    Low: 75 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 76. East wind 5 to 8 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 88. Light and variable wind becoming east 5 to 8 mph in the morning.
Saturday Night
A 10 percent chance of showers after 5am. Partly cloudy, with a low around 76. Southeast wind around 6 mph becoming calm in the evening.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Light and variable wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 76. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 76.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Breezy. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Breezy.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Windy.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Breezy.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
Sea Island GA
 31.18°N 81.34°W
Last Update:
2:21 pm EDT Sep 18, 2026
Forecast Valid:
8pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026
 
Forecast Discussion
 
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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