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Hazardous Weather Conditions

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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.
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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
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