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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tuesday

      Tuesday:SSW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Partly sunny. Seas around 1 ft.

      High: 71 °F

      ⇑S 10kt
      1ft

    • Tuesday Night

      Tuesday Night:SSW wind 10 to 15 kt. A chance of showers and thunderstorms.   Seas around 2 ft.

      Low: 65 °F

      SSW 15kt
      2ft

    • Wednesday

      Wednesday:SW wind around 10 kt. A slight chance of showers before 7am.   Seas around 2 ft.

      High: 78 °F

      SW 10kt
      2ft

    • Wednesday Night

      Wednesday Night:SW wind around 10 kt. Partly cloudy. Seas 1 to 2 ft.

      Low: 70 °F

      SW 10kt
      1-2ft

    • Thursday

      Thursday:WSW wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas around 1 ft.

      High: 80 °F

      WSW 10kt
      1ft

    • Thursday Night

      Thursday Night:W wind 5 to 10 kt. Mostly clear. Seas around 1 ft.

      Low: 71 °F

      W 10kt
      1ft

    • Friday

      Friday:Variable winds 5 kt or less. Sunny. Seas around 1 ft.

      High: 83 °F

      Light Wind
      1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly clear. Seas around 1 ft.

      Low: 68 °F

      Light Wind
      1ft

    • Independence Day

      Independence Day:Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm.   Seas around 1 ft.

      High: 76 °F

      Light Wind
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:26 am EDT Jun 30, 2026
Forecast Valid: 3am EDT Jun 30, 2026-6pm EDT Jul 6, 2026

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Detailed Forecast


Tuesday
SSW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Partly sunny. Seas around 1 ft.
Tuesday Night
SSW wind 10 to 15 kt. A chance of showers and thunderstorms. Seas around 2 ft.
Wednesday
SW wind around 10 kt. A slight chance of showers before 7am. Seas around 2 ft.
Wednesday Night
SW wind around 10 kt. Partly cloudy. Seas 1 to 2 ft.
Thursday
WSW wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas around 1 ft.
Thursday Night
W wind 5 to 10 kt. Mostly clear. Seas around 1 ft.
Friday
Variable winds 5 kt or less. Sunny. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. Mostly clear. Seas around 1 ft.
Independence Day
Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm. Seas around 1 ft.

Winds and seas higher in and near tstms.

*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: 2:26 am EDT Jun 30, 2026
Forecast Valid: 3am EDT Jun 30, 2026-6pm EDT Jul 6, 2026
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