Hazardous Weather Conditions

For More Weather Information:

Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Sunday

      Sunday:NW wind 10 to 15 kt becoming NE 5 to 8 kt in the morning. Partly sunny. Seas 1 to 2 ft.

      High: 37 °F

      NW 15kt⇓
      1-2ft

    • Sunday Night

      Sunday Night:SSE wind around 15 kt, with gusts as high as 25 kt. A chance of rain, mainly after 5am.   Seas 2 to 3 ft.

      Low: 38 °F

      SSE 15kt
      2-3ft

    • Monday

      Monday:SE wind 20 to 25 kt becoming S in the afternoon. Winds could gust as high as 30 kt. Rain, with thunderstorms also possible after 2pm.   Seas 4 ft building to 6 ft.

      High: 48 °F

      SSE 25kt
      Waves Building6ft

    • Monday Night

      Monday Night:S wind around 25 kt, with gusts as high as 40 kt. Rain.   Seas 7 to 8 ft.

      Low: 36 °F

      S 25kt
      7-8ft

    • Tuesday

      Tuesday:W wind around 20 kt, with gusts as high as 30 kt. A chance of showers before 8am.   Seas 7 ft subsiding to 5 ft.

      High: 43 °F

      W 20kt
      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: 40 °F

      W 25kt
      5ft

    • Wednesday

      Wednesday:W wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Sunny. Seas 3 to 4 ft.

      High: 36 °F

      W 20kt⇓
      3-4ft

    • Wednesday Night

      Wednesday Night:SSW wind 10 to 15 kt. Mostly cloudy. Seas around 3 ft.

      Low: 25 °F

      SSW 15kt
      3ft

    • Thursday

      Thursday:S wind 10 to 15 kt, with gusts as high as 20 kt. Partly sunny. Seas around 3 ft.

      High: 40 °F

      S 15kt
      3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:10 am EDT Mar 15, 2026
Forecast Valid: 1am EDT Mar 15, 2026-6pm EDT Mar 21, 2026

View Nearby Observations

Detailed Forecast


Sunday
NW wind 10 to 15 kt becoming NE 5 to 8 kt in the morning. Partly sunny. Seas 1 to 2 ft.
Sunday Night
SSE wind around 15 kt, with gusts as high as 25 kt. A chance of rain, mainly after 5am. Seas 2 to 3 ft.
Monday
SE wind 20 to 25 kt becoming S in the afternoon. Winds could gust as high as 30 kt. Rain, with thunderstorms also possible after 2pm. Seas 4 ft building to 6 ft.
Monday Night
S wind around 25 kt, with gusts as high as 40 kt. Rain. Seas 7 to 8 ft.
Tuesday
W wind around 20 kt, with gusts as high as 30 kt. A chance of showers before 8am. 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.
Wednesday
W wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Sunny. Seas 3 to 4 ft.
Wednesday Night
SSW wind 10 to 15 kt. Mostly cloudy. Seas around 3 ft.
Thursday
S wind 10 to 15 kt, with gusts as high as 20 kt. Partly sunny. Seas around 3 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...

ABOUT THIS FORECAST

Point Forecast: 42.99°N 70.62°W
Last Update: 1:10 am EDT Mar 15, 2026
Forecast Valid: 1am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data