| NWS Forecast for: 6NM SSE Portsmouth NH Atlantic Ocean Issued by: National Weather Service Gray/Portland, ME Last Update: 2:33 pm EDT Aug 17, 2026 | |
| Tonight: SSE wind 5 to 10 km/h becoming variable and less than 5 km/h after midnight. Patchy dense fog. Seas 1 m or less. Tuesday: NNE wind 5 to 10 km/h. A slight chance of showers, mainly between 1pm and 2pm. Patchy fog before 11am. Seas 1 m or less. Tuesday Night: Variable winds 5 km/h or less. Patchy fog after 11pm. Seas 1 m or less. Wednesday: WSW wind 5 to 8 km/h becoming SSE 10 to 15 km/h in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas around 1 m. Wednesday Night: SSW wind around 10 km/h becoming W after midnight. Partly cloudy. Seas around 1 m. Thursday: NNW wind 5 to 8 km/h becoming ESE 7 to 10 km/h in the afternoon. Mostly sunny. Seas around 1 m. Thursday Night: Variable winds 5 km/h or less. Partly cloudy. Seas around 1 m. Friday: N wind around 10 km/h becoming ESE in the afternoon. Mostly sunny. Seas around 1 m. Friday Night: Variable winds 5 km/h or less. Partly cloudy. Seas around 1 m. | |
| Marine Point Forecast: 42.98°N 70.74°W Associated Zone Forecast which includes this point | |
Visit your local NWS office at: https://www.weather.gov/gyx/ |