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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:19 am EDT Apr 13, 2026
Forecast Valid: 5am EDT Apr 13, 2026-6pm EDT Apr 19, 2026

Today

S wind 10 to 15 kt becoming SSW in the morning. Winds could gust as high as 25 kt. A chance of showers, mainly after 2pm. Seas around 1 ft.

Tonight

WSW wind 10 to 15 kt. A slight chance of showers before 7pm. Seas around 1 ft.

Tuesday

WNW wind 5 to 10 kt becoming ESE in the afternoon. A slight chance of showers after 3pm. Seas around 1 ft.

Tuesday Night

SSE wind 5 to 10 kt becoming SW after midnight. A chance of showers before 3am. Seas around 1 ft.

Wednesday

SW wind 5 to 10 kt. A chance of showers after 2pm. Seas around 1 ft.

Wednesday Night

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

Thursday

E 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

Variable winds 5 kt or less. 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.