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8NM ESE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:32 am EDT Oct 18, 2026
Forecast Valid: 12pm EDT Oct 18, 2026-6pm EDT Oct 24, 2026

This Afternoon

Variable winds 5 kt or less. Sunny. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Clear. Seas around 1 ft.

Monday

Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft.

Monday Night

ENE wind 5 to 8 kt becoming NNE 7 to 10 kt after midnight. Mostly cloudy. Seas 2 ft building to 4 ft.

Tuesday

NNE wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. Partly sunny. Seas around 5 ft.

Tuesday Night

NNE wind 15 to 18 kt increasing to 17 to 20 kt after midnight. Winds could gust as high as 30 kt. Partly cloudy. Seas 5 to 6 ft.

Wednesday

NNE wind 15 to 20 kt. Mostly sunny. Seas around 6 ft.

Wednesday Night

NNE wind around 10 kt. Mostly cloudy. Seas around 6 ft.

Thursday

N wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Partly sunny. Seas around 6 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.