National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Saturday

      Saturday:SW wind around 15 kt becoming W in the afternoon. Winds could gust as high as 30 kt. Sunny during the morning, then mostly cloudy during the afternoon. Seas 1 ft or less.

      High: 44 °F

      W 15kt
      < 1ft

    • Saturday Night

      Saturday Night:W wind 15 to 20 kt, with gusts as high as 35 kt. Mostly clear. Seas 1 ft or less.

      Low: 30 °F

      W 20kt
      < 1ft

    • Sunday

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

      High: 41 °F

      ⇑SE 10kt
      < 1ft

    • Sunday Night

      Sunday Night:SSE wind 10 to 15 kt, with gusts as high as 25 kt. A chance of rain after 3am. Seas 1 ft or less.

      Low: 37 °F

      SSE 15kt
      < 1ft

    • Monday

      Monday:SSE wind around 15 kt, with gusts as high as 30 kt. Rain, mainly after 7am. Seas 1 ft or less.

      High: 54 °F

      SSE 15kt
      < 1ft

    • Monday Night

      Monday Night:S wind 20 to 25 kt, with gusts as high as 40 kt. Rain. Seas 1 ft or less.

      Low: 44 °F

      S 25kt
      < 1ft

    • Tuesday

      Tuesday:WSW wind 15 to 20 kt, with gusts as high as 35 kt. Partly sunny. Seas 1 ft or less.

      High: 47 °F

      WSW 20kt
      < 1ft

    • Tuesday Night

      Tuesday Night:W wind 15 to 20 kt, with gusts as high as 30 kt. Mostly clear. Seas 1 ft or less.

      Low: 24 °F

      W 20kt
      < 1ft

    • Wednesday

      Wednesday:W wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.

      High: 36 °F

      W 15kt
      < 1ft


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

View Nearby Observations

Detailed Forecast


Saturday
SW wind around 15 kt becoming W in the afternoon. Winds could gust as high as 30 kt. Sunny during the morning, then mostly cloudy during the afternoon. Seas 1 ft or less.
Saturday Night
W wind 15 to 20 kt, with gusts as high as 35 kt. Mostly clear. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SE 5 to 10 kt in the afternoon. Partly sunny. Seas 1 ft or less.
Sunday Night
SSE wind 10 to 15 kt, with gusts as high as 25 kt. A chance of rain after 3am. Seas 1 ft or less.
Monday
SSE wind around 15 kt, with gusts as high as 30 kt. Rain, mainly after 7am. Seas 1 ft or less.
Monday Night
S wind 20 to 25 kt, with gusts as high as 40 kt. Rain. Seas 1 ft or less.
Tuesday
WSW wind 15 to 20 kt, with gusts as high as 35 kt. Partly sunny. Seas 1 ft or less.
Tuesday Night
W wind 15 to 20 kt, with gusts as high as 30 kt. Mostly clear. Seas 1 ft or less.
Wednesday
W wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.

*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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 43.02°N 70.73°W
Last Update: 2:06 am EDT Mar 14, 2026
Forecast Valid: 3am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data