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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:17 am EDT Jun 12, 2026
Forecast Valid: 8am EDT Jun 12, 2026-6pm EDT Jun 18, 2026

Today

Variable winds 5 kt or less. A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 4pm. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 1am. Patchy fog after 7pm. Seas around 1 ft.

Saturday

Variable winds 5 kt or less. Patchy fog before 8am. Seas around 1 ft.

Saturday Night

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

Sunday

SW wind 5 to 8 kt becoming SSE 10 to 15 kt in the morning. Mostly sunny. Seas 1 to 2 ft.

Sunday Night

S wind 15 to 20 kt. Showers, mainly after 2am. Seas around 3 ft.

Monday

W wind 5 to 10 kt. Showers likely before 8am. Seas 1 to 2 ft.

Monday Night

WNW wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

Tuesday

WNW wind 5 to 10 kt becoming S in the afternoon. Mostly sunny. Seas around 1 ft.

Winds and seas higher in and near tstms.

*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.