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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NNW wind 5 to 10 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 1 ft.

      Low: 55 °F

      NNW 10kt
      1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then scattered showers and thunderstorms after 5pm.   Seas around 1 ft.

      High: 59 °F

      Light Wind
      1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Scattered showers, mainly before 7pm.   Seas around 1 ft.

      Low: 52 °F

      Light Wind
      1ft

    • Friday

      Friday:NNW wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. A chance of showers after 4pm.   Seas around 1 ft.

      High: 55 °F

      ⇑SSE 10kt
      1ft

    • Friday Night

      Friday Night:S wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 20 kt. Rain, mainly after 7pm.   Seas 1 to 2 ft.

      Low: 50 °F

      ⇑S 15kt
      1-2ft

    • Saturday

      Saturday:NNE wind 15 to 20 kt increasing to 20 to 25 kt in the morning. Winds could gust as high as 35 kt. Rain, mainly before 2pm.   Seas 2 to 3 ft.

      High: 52 °F

      ⇑NNE 25kt
      2-3ft

    • Saturday Night

      Saturday Night:NNE wind 17 to 20 kt becoming NNW 15 to 18 kt after midnight. Winds could gust as high as 30 kt. A chance of showers before 11pm.   Seas 2 to 3 ft.

      Low: 47 °F

      NNE 20kt⇓
      2-3ft

    • Sunday

      Sunday:N wind 5 to 10 kt becoming SE in the afternoon. Mostly sunny. Seas around 2 ft.

      High: 54 °F

      N 10kt
      2ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.

      Low: 50 °F

      Light Wind
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:22 pm EDT May 27, 2026
Forecast Valid: 6pm EDT May 27, 2026-6pm EDT Jun 3, 2026

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Detailed Forecast


Tonight
NNW wind 5 to 10 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then scattered showers and thunderstorms after 5pm. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. Scattered showers, mainly before 7pm. Seas around 1 ft.
Friday
NNW wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. A chance of showers after 4pm. Seas around 1 ft.
Friday Night
S wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 20 kt. Rain, mainly after 7pm. Seas 1 to 2 ft.
Saturday
NNE wind 15 to 20 kt increasing to 20 to 25 kt in the morning. Winds could gust as high as 35 kt. Rain, mainly before 2pm. Seas 2 to 3 ft.
Saturday Night
NNE wind 17 to 20 kt becoming NNW 15 to 18 kt after midnight. Winds could gust as high as 30 kt. A chance of showers before 11pm. Seas 2 to 3 ft.
Sunday
N wind 5 to 10 kt becoming SE in the afternoon. Mostly sunny. Seas around 2 ft.
Sunday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 2 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: 2:22 pm EDT May 27, 2026
Forecast Valid: 6pm EDT May 27, 2026-6pm EDT Jun 3, 2026
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