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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Wednesday
High: 45 °F
SW 20kt
3ft
Wednesday Night
Low: 42 °F
WSW 15kt
2ft
Thursday
High: 47 °F
WNW 15kt
2ft
Thursday Night
Low: 38 °F
NW 15kt
2ft
Friday
High: 44 °F
NW 15kt
1-2ft
Friday Night
Low: 35 °F
NW 15kt
1ft
Saturday
High: 43 °F
WNW 10kt
1ft
Saturday Night
Low: 38 °F
WNW 10kt
1ft
Sunday
High: 50 °F
W 15kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:18 am EST Nov 12, 2025
Forecast Valid: 2am EST Nov 12, 2025-6pm EST Nov 18, 2025

View Nearby Observations

Detailed Forecast

Wednesday

SW wind 15 to 20 kt, with gusts as high as 25 kt. A slight chance of rain and snow showers before 8am, then a slight chance of rain showers between 8am and 11am. Seas around 3 ft.

Wednesday Night

WSW wind around 15 kt, with gusts as high as 25 kt. A slight chance of showers between 1am and 2am. Seas around 2 ft.

Thursday

WNW wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers, mainly after 2pm. Seas around 2 ft.

Thursday Night

NW wind around 15 kt. A chance of showers before 9pm. Seas around 2 ft.

Friday

NW wind 10 to 15 kt. Mostly sunny. Seas 1 to 2 ft.

Friday Night

NW wind around 15 kt. Mostly clear. Seas around 1 ft.

Saturday

WNW wind around 10 kt. Sunny. Seas around 1 ft.

Saturday Night

WNW wind around 10 kt becoming SSW after midnight. Showers likely. Seas around 1 ft.

Sunday

S wind 10 to 15 kt becoming W in the afternoon. Winds could gust as high as 20 kt. Rain. 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.