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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Friday
High: 41 °F
WNW 15kt⇓
2-3ft
Friday Night
Low: 37 °F
S 25kt
4ft
Saturday
High: 43 °F
W 25kt
4ft
Saturday Night
Low: 31 °F
WNW 20kt⇓
2-3ft
Sunday
High: 41 °F
NW 10kt
1ft
Sunday Night
Low: 38 °F
⇑SSE 20kt
4ft
Monday
High: 52 °F
SSE 30kt
7ft
Monday Night
Low: 39 °F
S 30kt
7-8ft
Tuesday
High: 44 °F
WSW 20kt
4-5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:03 pm EDT Mar 12, 2026
Forecast Valid: 2am EDT Mar 13, 2026-6pm EDT Mar 19, 2026

View Nearby Observations

Detailed Forecast

Friday

WNW wind 12 to 15 kt becoming WSW 10 to 13 kt in the morning. Winds could gust as high as 20 kt. A slight chance of rain and snow after 5pm. Seas 2 to 3 ft.

Friday Night

S wind 20 to 25 kt, with gusts as high as 30 kt. A chance of rain and snow before 8pm, then a chance of snow between 8pm and 11pm, then a chance of rain after 11pm. Seas around 4 ft.

Saturday

W wind 20 to 25 kt, with gusts as high as 30 kt. A chance of rain, mainly before 9am. Seas around 4 ft.

Saturday Night

WNW wind 17 to 20 kt decreasing to 15 to 18 kt after midnight. Winds could gust as high as 30 kt. Mostly clear. Seas 2 to 3 ft.

Sunday

NW wind 5 to 10 kt becoming SE in the afternoon. Mostly cloudy. Seas around 1 ft.

Sunday Night

SSE wind 15 to 18 kt increasing to 17 to 20 kt after midnight. Winds could gust as high as 30 kt. A chance of rain after 2am. Seas 2 ft building to 4 ft.

Monday

SSE wind 25 to 30 kt, with gusts as high as 40 kt. Rain. Seas 5 ft building to 7 ft.

Monday Night

S wind around 30 kt, with gusts as high as 45 kt. Rain. Seas 7 to 8 ft.

Tuesday

WSW wind around 20 kt, with gusts as high as 30 kt. Rain likely. Seas 4 to 5 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.