National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:S wind around 20 kt, with gusts as high as 30 kt. Rain, possibly mixed with snow, becoming all rain after 3am. Seas 3 to 4 ft.

      Low: 37 °F

      S 20kt
      3-4ft

    • Saturday

      Saturday:W wind 15 to 18 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas around 4 ft.

      High: 44 °F

      ⇑W 20kt
      4ft

    • Saturday Night

      Saturday Night:WNW wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Mostly clear. Seas 2 to 3 ft.

      Low: 32 °F

      WNW 25kt⇓
      2-3ft

    • Sunday

      Sunday:NW wind 5 to 10 kt becoming SE in the afternoon. Partly sunny. Seas around 1 ft.

      High: 40 °F

      NW 10kt
      1ft

    • Sunday Night

      Sunday Night:SSE wind 15 to 20 kt, with gusts as high as 30 kt. Mostly cloudy. Seas 2 to 3 ft.

      Low: 39 °F

      SSE 20kt
      2-3ft

    • Monday

      Monday:SSE wind 20 to 25 kt increasing to 25 to 30 kt in the afternoon. Winds could gust as high as 40 kt. Rain, mainly after 9am. Seas 5 ft building to 7 ft.

      High: 52 °F

      ⇑SSE 30kt
      Waves Building7ft

    • Monday Night

      Monday Night:S wind 30 to 35 kt, with gusts as high as 45 kt. Rain. Seas 8 to 9 ft.

      Low: 40 °F

      S 35kt
      8-9ft

    • Tuesday

      Tuesday:SW wind 20 to 25 kt, with gusts as high as 35 kt. Rain likely. Seas 7 ft subsiding to 5 ft.

      High: 46 °F

      SW 25kt
      7ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:W wind 20 to 25 kt, with gusts as high as 35 kt. Mostly clear. Seas around 5 ft.

      Low: 26 °F

      W 25kt
      5ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:08 pm EDT Mar 13, 2026
Forecast Valid: 7pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026

View Nearby Observations

Detailed Forecast


Tonight
S wind around 20 kt, with gusts as high as 30 kt. Rain, possibly mixed with snow, becoming all rain after 3am. Seas 3 to 4 ft.
Saturday
W wind 15 to 18 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas around 4 ft.
Saturday Night
WNW wind 20 to 25 kt decreasing to 15 to 20 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. Partly sunny. Seas around 1 ft.
Sunday Night
SSE wind 15 to 20 kt, with gusts as high as 30 kt. Mostly cloudy. Seas 2 to 3 ft.
Monday
SSE wind 20 to 25 kt increasing to 25 to 30 kt in the afternoon. Winds could gust as high as 40 kt. Rain, mainly after 9am. Seas 5 ft building to 7 ft.
Monday Night
S wind 30 to 35 kt, with gusts as high as 45 kt. Rain. Seas 8 to 9 ft.
Tuesday
SW wind 20 to 25 kt, with gusts as high as 35 kt. Rain likely. Seas 7 ft subsiding to 5 ft.
Tuesday Night
W wind 20 to 25 kt, with gusts as high as 35 kt. Mostly clear. Seas around 5 ft.

*Notices:

  1. 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.
  2. 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 42.99°N 70.62°W
Last Update: 3:08 pm EDT Mar 13, 2026
Forecast Valid: 7pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data