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Jacksonville, FL Local Forecast Office

4NM SE Altamaha Sound FL

Marine Point Forecast

[NOTICE]

Tonight
Low: 77 °F
N 18kt
3-4ft

Small Craft Advisory
Sunday
High: 87 °F
W 9kt
1-3ft
Sunday Night
Low: 79 °F
S 11kt
2ft
Monday
High: 88 °F
S 11kt
2ft
Monday Night
Low: 79 °F
S 12kt
2ft
Tuesday
High: 88 °F
S 10kt
2ft
Tuesday Night
Low: 79 °F
SW 12kt
2ft
Wednesday
High: 87 °F
S 11kt
2ft
Wednesday Night
Low: 79 °F
SSW 12kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:26 pm EDT Jul 5, 2025
Forecast Valid: 6pm EDT Jul 5, 2025-6pm EDT Jul 12, 2025

View Nearby Observations

Detailed Forecast

Tonight

N wind 8 to 18 kt becoming WNW after midnight. Winds could gust as high as 25 kt. A chance of showers and thunderstorms, mainly before midnight. Seas 3 to 4 ft.

Sunday

W wind 7 to 9 kt becoming SSW in the afternoon. A chance of showers and thunderstorms, mainly after 3pm. Seas 1 to 3 ft.

Sunday Night

S wind 9 to 11 kt becoming SW after midnight. A chance of showers and thunderstorms, mainly between 7pm and 8pm. Seas around 2 ft.

Monday

WSW wind 9 to 11 kt becoming S in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas around 2 ft.

Monday Night

S wind 9 to 12 kt becoming SW after midnight. A slight chance of showers and thunderstorms before 8pm. Seas around 2 ft.

Tuesday

WSW wind 7 to 10 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.

Tuesday Night

SW wind 9 to 12 kt. Partly cloudy. Seas around 2 ft.

Wednesday

WSW wind 7 to 11 kt becoming S in the afternoon. A chance of showers and thunderstorms after 2pm. Seas around 2 ft.

Wednesday Night

SSW wind 9 to 12 kt. A chance of showers and thunderstorms before 2am. Seas around 2 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.