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Hazardous Weather Conditions

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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:SE wind around 10 kt. A chance of rain after 5am. Seas 1 ft building to 3 ft.

      Low: 36 °F

      SE 10kt
      Waves Building3ft

    • Monday

      Monday:SE wind around 15 kt becoming S in the afternoon. Winds could gust as high as 25 kt. Rain, with thunderstorms also possible after 2pm. Seas 4 ft building to 6 ft.

      High: 52 °F

      SSE 15kt
      Waves Building6ft

    • Monday Night

      Monday Night:S wind around 20 kt, with gusts as high as 40 kt. Rain and possibly a thunderstorm. Seas 6 ft building to 8 ft.

      Low: 43 °F

      S 20kt
      Waves Building8ft

    • Tuesday

      Tuesday:W wind around 15 kt, with gusts as high as 30 kt. A chance of rain before 10am. Seas 8 ft subsiding to 6 ft.

      High: 46 °F

      W 15kt
      8ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:W wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 5 ft.

      Low: 23 °F

      W 15kt
      5ft

    • Wednesday

      Wednesday:W wind 5 to 10 kt. Sunny. Seas around 4 ft.

      High: 36 °F

      W 10kt
      4ft

    • Wednesday Night

      Wednesday Night:SSW wind 5 to 10 kt. Mostly cloudy. Seas 3 to 4 ft.

      Low: 29 °F

      SSW 10kt
      3-4ft

    • Thursday

      Thursday:SSE wind around 10 kt. Partly sunny. Seas around 3 ft.

      High: 40 °F

      SSE 10kt
      3ft

    • Thursday Night

      Thursday Night:SSE wind around 10 kt becoming SSW after midnight. Mostly cloudy. Seas around 3 ft.

      Low: 33 °F

      SSE 10kt
      3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:25 pm EDT Mar 15, 2026
Forecast Valid: 6pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026

View Nearby Observations

Detailed Forecast


Tonight
SE wind around 10 kt. A chance of rain after 5am. Seas 1 ft building to 3 ft.
Monday
SE wind around 15 kt becoming S in the afternoon. Winds could gust as high as 25 kt. Rain, with thunderstorms also possible after 2pm. Seas 4 ft building to 6 ft.
Monday Night
S wind around 20 kt, with gusts as high as 40 kt. Rain and possibly a thunderstorm. Seas 6 ft building to 8 ft.
Tuesday
W wind around 15 kt, with gusts as high as 30 kt. A chance of rain before 10am. Seas 8 ft subsiding to 6 ft.
Tuesday Night
W wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 5 ft.
Wednesday
W wind 5 to 10 kt. Sunny. Seas around 4 ft.
Wednesday Night
SSW wind 5 to 10 kt. Mostly cloudy. Seas 3 to 4 ft.
Thursday
SSE wind around 10 kt. Partly sunny. Seas around 3 ft.
Thursday Night
SSE wind around 10 kt becoming SSW after midnight. Mostly cloudy. 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: 42.98°N 70.74°W
Last Update: 2:25 pm EDT Mar 15, 2026
Forecast Valid: 6pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026
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