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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSW wind around 20 kt becoming W after midnight. Winds could gust as high as 30 kt. Mostly cloudy. Seas 3 to 4 ft.

      Low: 39 °F

      SSW 20kt
      3-4ft

    • Saturday

      Saturday:WNW wind 10 to 15 kt becoming N 5 to 8 kt in the morning. Winds could gust as high as 25 kt. Mostly cloudy. Seas 3 ft subsiding to 1 ft.

      High: 44 °F

      WNW 15kt⇓
      3ftWaves Subsiding

    • Saturday Night

      Saturday Night:E wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 25 kt. Rain, mainly after 7pm.   Seas 1 to 2 ft.

      Low: 37 °F

      ⇑E 15kt
      1-2ft

    • Sunday

      Sunday:NE wind 10 to 15 kt becoming W in the afternoon. Winds could gust as high as 20 kt. Rain and sleet before 10am, then a chance of rain between 10am and 5pm, then a chance of rain and snow after 5pm.   Seas around 2 ft.

      High: 39 °F

      W 15kt
      2ft

    • Sunday Night

      Sunday Night:W wind 20 to 23 kt increasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. A chance of snow before 7pm.   Seas 2 to 3 ft.

      Low: 30 °F

      ⇑W 25kt
      2-3ft

    • Monday

      Monday:W wind 20 to 25 kt decreasing to 15 to 20 kt in the afternoon. Winds could gust as high as 30 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 37 °F

      W 25kt⇓
      2-3ft

    • Monday Night

      Monday Night:WSW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy. Seas around 2 ft.

      Low: 34 °F

      WSW 15kt
      2ft

    • Tuesday

      Tuesday:WSW wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 2 ft.

      High: 42 °F

      WSW 15kt
      2ft

    • Tuesday Night

      Tuesday Night:SSW wind 15 to 20 kt. Mostly cloudy. Seas around 2 ft.

      Low: 38 °F

      SSW 20kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:11 pm EST Jan 9, 2026
Forecast Valid: 10pm EST Jan 9, 2026-6pm EST Jan 16, 2026

View Nearby Observations

Detailed Forecast


Tonight
SSW wind around 20 kt becoming W after midnight. Winds could gust as high as 30 kt. Mostly cloudy. Seas 3 to 4 ft.
Saturday
WNW wind 10 to 15 kt becoming N 5 to 8 kt in the morning. Winds could gust as high as 25 kt. Mostly cloudy. Seas 3 ft subsiding to 1 ft.
Saturday Night
E wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 25 kt. Rain, mainly after 7pm. Seas 1 to 2 ft.
Sunday
NE wind 10 to 15 kt becoming W in the afternoon. Winds could gust as high as 20 kt. Rain and sleet before 10am, then a chance of rain between 10am and 5pm, then a chance of rain and snow after 5pm. Seas around 2 ft.
Sunday Night
W wind 20 to 23 kt increasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. A chance of snow before 7pm. Seas 2 to 3 ft.
Monday
W wind 20 to 25 kt decreasing to 15 to 20 kt in the afternoon. Winds could gust as high as 30 kt. Mostly sunny. Seas 2 to 3 ft.
Monday Night
WSW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy. Seas around 2 ft.
Tuesday
WSW wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 2 ft.
Tuesday Night
SSW wind 15 to 20 kt. Mostly 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: 6:11 pm EST Jan 9, 2026
Forecast Valid: 10pm EST Jan 9, 2026-6pm EST Jan 16, 2026
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