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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 39 °F
SE 10kt
1ft
Tonight
Low: 29 °F
N 15kt
1-2ft
Wednesday
High: 38 °F
N 10kt
1ft
Wednesday Night
Low: 35 °F
S 15kt
2ft
Thursday
High: 43 °F
⇑SSE 15kt
1-2ft
Thursday Night
Low: 39 °F
S 20kt⇓
2-3ft
Friday
High: 51 °F
S 10kt
1-2ft
Friday Night
Low: 46 °F
SSW 15kt
2-3ft
Saturday
High: 51 °F
NW 10kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:01 am EDT Apr 7, 2026
Forecast Valid: 6am EDT Apr 7, 2026-6pm EDT Apr 13, 2026

View Nearby Observations

Detailed Forecast

Today

SW wind 5 to 10 kt becoming ENE in the afternoon. Rain and snow before 3pm, then a chance of rain between 3pm and 4pm, then a slight chance of rain and snow after 4pm. Seas around 1 ft.

Tonight

N wind around 15 kt, with gusts as high as 25 kt. A chance of rain and snow showers, mainly before 9pm. Seas 1 to 2 ft.

Wednesday

N wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 1 ft.

Wednesday Night

S wind 10 to 15 kt becoming SSW after midnight. Clear. Seas around 2 ft.

Thursday

SSW wind 10 to 13 kt becoming SSE 12 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Sunny. Seas 1 to 2 ft.

Thursday Night

S wind 15 to 20 kt becoming SSW 10 to 15 kt after midnight. Partly cloudy. Seas 2 to 3 ft.

Friday

SSW wind around 10 kt becoming S in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Friday Night

S wind 10 to 15 kt becoming SW after midnight. A chance of showers. Seas 2 to 3 ft.

Saturday

NW wind around 10 kt. Mostly sunny. Seas 2 to 3 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.