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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:20 pm EDT Apr 13, 2026
Forecast Valid: 3pm EDT Apr 13, 2026-6pm EDT Apr 20, 2026

This Afternoon

SSW wind around 15 kt, with gusts as high as 25 kt. A chance of showers, mainly between 4pm and 5pm. Seas around 3 ft.

Tonight

WSW wind 10 to 15 kt, with gusts as high as 25 kt. A slight chance of showers before 7pm. Seas 3 to 4 ft.

Tuesday

SSE wind 5 to 8 kt becoming SE 7 to 10 kt in the afternoon. A slight chance of showers after 5pm. Seas 1 to 2 ft.

Tuesday Night

SSE wind 10 to 15 kt becoming SW after midnight. A chance of showers between 7pm and 3am. Patchy dense fog after 9pm. Seas 2 to 3 ft.

Wednesday

WSW wind 5 to 10 kt becoming ESE in the afternoon. A chance of showers after 2pm. Seas 1 to 2 ft.

Wednesday Night

N wind 5 to 10 kt. A chance of showers. Seas around 1 ft.

Thursday

ENE wind 5 to 10 kt. A chance of showers. Seas around 1 ft.

Thursday Night

Variable winds 5 kt or less. A chance of showers. Seas around 1 ft.

Friday

WSW wind 5 to 10 kt becoming ENE in the afternoon. A chance of showers. Seas around 1 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.