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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 47 °F
S 25kt
6ft
Tonight
Low: 40 °F
S 25kt
6-7ft
Tuesday
High: 44 °F
W 20kt
5-6ft
Tuesday Night
Low: 25 °F
W 25kt
4-5ft
Wednesday
High: 35 °F
WNW 15kt⇓
3-4ft
Wednesday Night
Low: 32 °F
S 10kt
3ft
Thursday
High: 39 °F
SSE 15kt
3ft
Thursday Night
Low: 36 °F
S 15kt
3ft
Friday
High: 45 °F
SSW 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:36 am EDT Mar 16, 2026
Forecast Valid: 7am EDT Mar 16, 2026-6pm EDT Mar 22, 2026

View Nearby Observations

Detailed Forecast

Today

S wind 20 to 25 kt, with gusts as high as 35 kt. Rain likely, then rain and possibly a thunderstorm after 8am. Seas 4 ft building to 6 ft.

Tonight

S wind around 25 kt, with gusts as high as 40 kt. Rain and possibly a thunderstorm before 4am, then rain likely. Areas of fog between 9pm and 3am. Seas 6 to 7 ft.

Tuesday

W wind around 20 kt, with gusts as high as 30 kt. A chance of rain, mainly before 7am. Seas 5 to 6 ft.

Tuesday Night

W wind 20 to 25 kt. Mostly clear. Seas 4 to 5 ft.

Wednesday

WNW wind 10 to 15 kt decreasing to 5 to 10 kt in the afternoon. Winds could gust as high as 25 kt. Sunny. Seas 3 to 4 ft.

Wednesday Night

S wind around 10 kt. Mostly cloudy. Seas around 3 ft.

Thursday

SSE wind 10 to 15 kt, with gusts as high as 25 kt. Partly sunny. Seas around 3 ft.

Thursday Night

SSE wind around 15 kt becoming SSW after midnight. Winds could gust as high as 25 kt. Mostly cloudy. Seas around 3 ft.

Friday

SSW wind around 15 kt, with gusts as high as 25 kt. Partly sunny. Seas around 2 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.