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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]

    • Saturday

      Saturday:SW wind 10 to 15 kt becoming W in the afternoon. Winds could gust as high as 25 kt. Sunny during the morning, then mostly cloudy during the afternoon. Seas 3 to 4 ft.

      High: 44 °F

      W 15kt
      3-4ft

    • Saturday Night

      Saturday Night:W wind 15 to 20 kt, with gusts as high as 25 kt. Mostly clear. Seas around 2 ft.

      Low: 30 °F

      W 20kt
      2ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SE 5 to 10 kt in the afternoon. Partly sunny. Seas around 1 ft.

      High: 40 °F

      ⇑SE 10kt
      1ft

    • Sunday Night

      Sunday Night:SSE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of rain after 3am. Seas 1 to 2 ft.

      Low: 37 °F

      SSE 15kt
      1-2ft

    • Monday

      Monday:SE wind around 15 kt, with gusts as high as 25 kt. Rain, mainly after 7am. Seas 4 ft building to 7 ft.

      High: 54 °F

      SE 15kt
      Waves Building7ft

    • Monday Night

      Monday Night:S wind around 20 kt, with gusts as high as 35 kt. Rain. Seas 8 to 9 ft.

      Low: 43 °F

      S 20kt
      8-9ft

    • Tuesday

      Tuesday:WSW wind 15 to 20 kt, with gusts as high as 25 kt. Partly sunny. Seas 8 ft subsiding to 6 ft.

      High: 46 °F

      WSW 20kt
      8ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:W wind 15 to 20 kt. Mostly clear. Seas around 5 ft.

      Low: 24 °F

      W 20kt
      5ft

    • Wednesday

      Wednesday:W wind 5 to 10 kt. Sunny. Seas 3 to 4 ft.

      High: 36 °F

      W 10kt
      3-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:06 am EDT Mar 14, 2026
Forecast Valid: 3am EDT Mar 14, 2026-6pm EDT Mar 20, 2026

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Detailed Forecast


Saturday
SW wind 10 to 15 kt becoming W in the afternoon. Winds could gust as high as 25 kt. Sunny during the morning, then mostly cloudy during the afternoon. Seas 3 to 4 ft.
Saturday Night
W wind 15 to 20 kt, with gusts as high as 25 kt. Mostly clear. Seas around 2 ft.
Sunday
Variable winds less than 5 kt becoming SE 5 to 10 kt in the afternoon. Partly sunny. Seas around 1 ft.
Sunday Night
SSE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of rain after 3am. Seas 1 to 2 ft.
Monday
SE wind around 15 kt, with gusts as high as 25 kt. Rain, mainly after 7am. Seas 4 ft building to 7 ft.
Monday Night
S wind around 20 kt, with gusts as high as 35 kt. Rain. Seas 8 to 9 ft.
Tuesday
WSW wind 15 to 20 kt, with gusts as high as 25 kt. Partly sunny. Seas 8 ft subsiding to 6 ft.
Tuesday Night
W wind 15 to 20 kt. Mostly clear. Seas around 5 ft.
Wednesday
W wind 5 to 10 kt. Sunny. Seas 3 to 4 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: 2:06 am EDT Mar 14, 2026
Forecast Valid: 3am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
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