Extreme Heat Risk this Week

Extreme heat and little overnight relief will lead to an extreme risk for heat-related impacts through the rest of the week. Extreme Heat Warning in effect on Tuesday. Read More >

For More Weather Information:

Jacksonville, FL Local Forecast Office

13NM NNW Fernandina Beach FL

Marine Point Forecast

[NOTICE]

Tonight
Low: 78 °F
Light Wind
< 1ft
Wednesday
High: 97 °F
Light Wind
< 1ft
Wednesday Night
Low: 76 °F
Light Wind
< 1ft
Thursday
High: 95 °F
Light Wind
< 1ft
Thursday Night
Low: 75 °F
Light Wind
< 1ft
Friday
High: 93 °F
⇑SSE 6kt
< 1ft
Friday Night
Low: 75 °F
Light Wind
< 1ft
Saturday
High: 91 °F
⇑SW 6kt
< 1ft
Saturday Night
Low: 74 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:21 pm EDT Aug 18, 2026
Forecast Valid: 7pm EDT Aug 18, 2026-6pm EDT Aug 25, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 8pm. Seas 1 ft or less.

Wednesday

Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 9pm. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 2am. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming SW around 6 kt in the morning. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 2am. Seas 1 ft or less.

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.