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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind around 10 kt. Rain, mainly before 4am.   Seas around 3 ft.

      Low: 41 °F

      S 10kt
      3ft

    • Monday

      Monday:SSW wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers, mainly after 5pm.   Seas 3 to 4 ft.

      High: 60 °F

      SSW 15kt
      3-4ft

    • Monday Night

      Monday Night:WSW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. A slight chance of showers before 8pm.   Seas around 3 ft.

      Low: 53 °F

      WSW 15kt⇓
      3ft

    • Tuesday

      Tuesday:W wind 5 to 10 kt becoming SSE in the afternoon. Mostly sunny. Seas around 2 ft.

      High: 64 °F

      SSE 10kt
      2ft

    • Tuesday Night

      Tuesday Night:S wind around 10 kt becoming SW after midnight. A chance of showers before 1am.   Seas around 2 ft.

      Low: 52 °F

      S 10kt
      2ft

    • Wednesday

      Wednesday:SSW wind 5 to 10 kt. Partly sunny. Seas around 2 ft.

      High: 67 °F

      SSW 10kt
      2ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A chance of showers.   Seas around 1 ft.

      Low: 51 °F

      Light Wind
      1ft

    • Thursday

      Thursday:E wind 5 to 10 kt. A chance of showers.   Seas around 1 ft.

      High: 58 °F

      E 10kt
      1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. A chance of showers.   Seas 1 to 2 ft.

      Low: 49 °F

      Light Wind
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:17 pm EDT Apr 12, 2026
Forecast Valid: 7pm EDT Apr 12, 2026-6pm EDT Apr 19, 2026

View Nearby Observations

Detailed Forecast


Tonight
S wind around 10 kt. Rain, mainly before 4am. Seas around 3 ft.
Monday
SSW wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers, mainly after 5pm. Seas 3 to 4 ft.
Monday Night
WSW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. A slight chance of showers before 8pm. Seas around 3 ft.
Tuesday
W wind 5 to 10 kt becoming SSE in the afternoon. Mostly sunny. Seas around 2 ft.
Tuesday Night
S wind around 10 kt becoming SW after midnight. A chance of showers before 1am. Seas around 2 ft.
Wednesday
SSW wind 5 to 10 kt. Partly sunny. Seas around 2 ft.
Wednesday Night
Variable winds 5 kt or less. A chance of showers. Seas around 1 ft.
Thursday
E wind 5 to 10 kt. A chance of showers. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 to 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: 42.98°N 70.74°W
Last Update: 7:17 pm EDT Apr 12, 2026
Forecast Valid: 7pm EDT Apr 12, 2026-6pm EDT Apr 19, 2026
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