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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:Variable winds 5 kt or less. Mostly clear. Seas 1 to 2 ft.

      Low: 54 °F

      Light Wind
      1-2ft

    • Tuesday

      Tuesday:SW wind 5 to 10 kt. A slight chance of showers after 5pm.   Seas around 2 ft.

      High: 79 °F

      SW 10kt
      2ft

    • Tuesday Night

      Tuesday Night:WSW wind 5 to 10 kt becoming SSW in the evening. A slight chance of showers and thunderstorms before 9pm.   Seas around 2 ft.

      Low: 67 °F

      SW 10kt
      2ft

    • Wednesday

      Wednesday:WSW wind around 10 kt. A chance of showers after 1pm.   Seas around 2 ft.

      High: 77 °F

      WSW 10kt
      2ft

    • Wednesday Night

      Wednesday Night:NW wind around 10 kt. A chance of showers before 7pm.   Seas 1 to 2 ft.

      Low: 51 °F

      NW 10kt
      1-2ft

    • Thursday

      Thursday:NNW wind 5 to 10 kt becoming SW in the afternoon. Mostly sunny. Seas around 1 ft.

      High: 59 °F

      NNW 10kt
      1ft

    • Thursday Night

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

      Low: 47 °F

      Light Wind
      1ft

    • Friday

      Friday:NW wind 5 to 10 kt becoming SSE in the afternoon. Mostly sunny. Seas around 1 ft.

      High: 59 °F

      SSE 10kt
      1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly cloudy. Seas 1 to 2 ft.

      Low: 48 °F

      Light Wind
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:45 pm EDT May 18, 2026
Forecast Valid: 5pm EDT May 18, 2026-6pm EDT May 25, 2026

View Nearby Observations

Detailed Forecast


Tonight
Variable winds 5 kt or less. Mostly clear. Seas 1 to 2 ft.
Tuesday
SW wind 5 to 10 kt. A slight chance of showers after 5pm. Seas around 2 ft.
Tuesday Night
WSW wind 5 to 10 kt becoming SSW in the evening. A slight chance of showers and thunderstorms before 9pm. Seas around 2 ft.
Wednesday
WSW wind around 10 kt. A chance of showers after 1pm. Seas around 2 ft.
Wednesday Night
NW wind around 10 kt. A chance of showers before 7pm. Seas 1 to 2 ft.
Thursday
NNW wind 5 to 10 kt becoming SW in the afternoon. Mostly sunny. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. Mostly clear. Seas around 1 ft.
Friday
NW wind 5 to 10 kt becoming SSE in the afternoon. Mostly sunny. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. Mostly cloudy. 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: 3:45 pm EDT May 18, 2026
Forecast Valid: 5pm EDT May 18, 2026-6pm EDT May 25, 2026
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