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Jacksonville, FL Local Forecast Office

5NM S Altamaha Sound FL

Marine Point Forecast

[NOTICE]

Saturday
High: 86 °F
⇑E 10kt
2ft
Saturday Night
Low: 78 °F
SE 8kt⇓
2ft
Sunday
High: 86 °F
ENE 8kt
1ft
Sunday Night
Low: 76 °F
E 6kt⇓
1ft
Monday
High: 86 °F
⇑E 8kt
1-2ft
Monday Night
Low: 76 °F
Light Wind
2ft
Tuesday
High: 85 °F
⇑ENE 9kt
1-2ft
Tuesday Night
Low: 76 °F
ENE 6kt
2ft
Wednesday
High: 84 °F
NE 19kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:21 am EDT Sep 19, 2026
Forecast Valid: 3am EDT Sep 19, 2026-6pm EDT Sep 25, 2026

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Detailed Forecast

Saturday

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. A slight chance of showers and thunderstorms between 2pm and 3pm. Seas around 2 ft.

Saturday Night

SE wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms after 3am. Seas around 2 ft.

Sunday

NNE wind 5 to 8 kt becoming ENE in the afternoon. A chance of showers and thunderstorms, mainly before 1pm. Seas around 1 ft.

Sunday Night

E wind around 6 kt becoming variable and less than 5 kt after midnight. A slight chance of showers before 7pm. Seas around 1 ft.

Monday

Variable winds less than 5 kt becoming E 5 to 8 kt in the afternoon. A chance of showers, with thunderstorms also possible after 11am. Seas 1 to 2 ft.

Monday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly after 2am. Seas around 2 ft.

Tuesday

Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Seas 1 to 2 ft.

Tuesday Night

ENE wind around 6 kt. A chance of showers and thunderstorms. Seas around 2 ft.

Wednesday

NE wind 11 to 19 kt. Showers likely and possibly a thunderstorm. Seas 2 to 3 ft.

Winds and waves higher in and near thunderstorms.

*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.