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

Hazardous Weather Conditions

Current conditions at

Brunswick, Malcolm McKinnon Airport (KSSI)

Lat: 31.15°NLon: 81.39°WElev: 20ft.

Fair

82°F

28°C

Humidity 89%
Wind Speed Calm
Barometer 29.81 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 20 Aug 11:55 pm EDT
Extended Forecast for

Saint Simons GA

High Surf Advisory August 21, 12:21am until August 22, 02:00am
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory August 21, 12:21am until August 22, 02:00am

    NOW until 2:00am Fri

    High Surf Advisory

  • Overnight

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Northwest wind around 8 mph becoming southeast in the afternoon.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Southwest wind 5 to 9 mph.

    Low: 75 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms after 5pm. High near 90. Heat index values as high as 102. Light and variable wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 80%.

    High: 90 °F

    Chance
    T-storms then
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Low around 74. Southeast wind 3 to 8 mph. Chance of precipitation is 80%.

    Low: 74 °F

    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. Chance of precipitation is 80%.

    High: 87 °F

    Showers
    Likely then
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 74. Chance of precipitation is 80%.

    Low: 74 °F

    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 70%.

    High: 89 °F

    Chance
    T-storms then
    T-storms
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 76. West wind around 6 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Northwest wind around 8 mph becoming southeast in the afternoon.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Southwest wind 5 to 9 mph.
Friday
A chance of showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms after 5pm. High near 90. Heat index values as high as 102. Light and variable wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Low around 74. Southeast wind 3 to 8 mph. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 74. Chance of precipitation is 80%.
Sunday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 71.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.16°N 81.39°W
Last Update:
11:36 pm EDT Aug 20, 2025
Forecast Valid:
12am EDT Aug 21, 2025-6pm EDT Aug 27, 2025
 
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