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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Friday
High: 37 °F
⇑ESE 10kt
1ft
Friday Night
Low: 26 °F
NE 20kt
3ft
Saturday
High: 33 °F
NNE 20kt⇓
2-3ft
Saturday Night
Low: 29 °F
N 15kt
2ft
Sunday
High: 36 °F
ENE 15kt
2ft
Sunday Night
Low: 30 °F
⇑ENE 30kt
4ft
Monday
High: 34 °F
NNE 30kt
4-5ft
Monday Night
Low: 27 °F
N 25kt⇓
4-5ft
Tuesday
High: 35 °F
NW 15kt⇓
3-4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:53 am EST Feb 20, 2026
Forecast Valid: 4am EST Feb 20, 2026-6pm EST Feb 26, 2026

View Nearby Observations

Detailed Forecast

Friday

S wind 5 to 8 kt becoming ESE 7 to 10 kt in the afternoon. Snow likely, mainly after 5pm. Seas around 1 ft.

Friday Night

E wind 15 to 20 kt becoming NNE after midnight. Winds could gust as high as 25 kt. Snow, mainly before 5am. Seas 1 ft building to 3 ft.

Saturday

NNE wind 15 to 20 kt decreasing to 5 to 10 kt in the afternoon. A chance of snow, mainly before 1pm. Seas 2 to 3 ft.

Saturday Night

N wind 10 to 15 kt. Partly cloudy. Seas around 2 ft.

Sunday

NNE wind around 15 kt becoming ENE in the afternoon. Winds could gust as high as 20 kt. Partly sunny. Seas around 2 ft.

Sunday Night

ENE wind 15 to 20 kt increasing to 25 to 30 kt after midnight. Winds could gust as high as 40 kt. A chance of snow after 1am. Seas 2 ft building to 4 ft.

Monday

NNE wind 25 to 30 kt, with gusts as high as 40 kt. A chance of snow before 4pm. Seas 4 to 5 ft.

Monday Night

N wind 20 to 25 kt becoming NW 15 to 20 kt after midnight. Winds could gust as high as 35 kt. A chance of snow. Seas 4 to 5 ft.

Tuesday

NW wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas 3 to 4 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.