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

Coastal Flood Warnings and Heavy Rainfall this Weekend - Updated Briefing

Coastal Flood Warnings have been issued through early next week along portions of the northeast Florida Atlantic coast and within the St. Johns River basin. Dangerous marine and surf conditions will continue, with heavy rainfall possible this weekend, which may exacerbate flooding at coastal locations. Please monitor this briefing for the latest updates this weekend and early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Brunswick, Malcolm McKinnon Airport (KSSI)

Lat: 31.15°NLon: 81.39°WElev: 20ft.

Mostly Cloudy

75°F

24°C

Humidity 83%
Wind Speed NE 12 G 17 mph
Barometer 30.11 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 3 Oct 11:55 pm EDT
Extended Forecast for

Saint Simons Island GA

Coastal Flood Advisory October 4, 12:02am until October 6, 05:00am
High Surf Advisory October 4, 12:02am until October 6, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
High Surf Advisory
  •  
    Coastal Flood Advisory October 4, 12:02am until October 6, 05:00am
    High Surf Advisory October 4, 12:02am until October 6, 05:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 69 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers and thunderstorms, then a chance of showers after 9am. Cloudy through mid morning, then becoming mostly sunny, with a high near 81. Breezy, with a northeast wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 81 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 71. Breezy, with an east wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 71 °F

    Slight Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 82. Breezy, with an east wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 72. East wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    Low: 72 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 80. Breezy. Chance of precipitation is 60%.

    High: 80 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Showers likely, mainly before 8pm. The rain could be heavy at times. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Heavy Rain

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 69. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers and thunderstorms, then a chance of showers after 9am. Cloudy through mid morning, then becoming mostly sunny, with a high near 81. Breezy, with a northeast wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 71. Breezy, with an east wind 13 to 15 mph, with gusts as high as 25 mph.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 82. Breezy, with an east wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 72. East wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 80. Breezy. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly before 8pm. The rain could be heavy at times. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 82.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 71.
Wednesday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Breezy.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.23°N 81.36°W
Last Update:
11:36 pm EDT Oct 3, 2025
Forecast Valid:
12am EDT Oct 4, 2025-6pm EDT Oct 10, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation