| NWS Forecast for: 18NM NNE Portsmouth NH Atlantic Ocean Issued by: National Weather Service Gray/Portland, ME Last Update: 2:19 pm EDT Oct 8, 2026 |  |
Tonight: W wind 5 to 10 kt. Clear. Seas 1 ft or less. Friday: W wind 5 to 8 kt becoming W 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Sunny. Seas 1 ft or less. Friday Night: Variable winds 5 kt or less. Clear. Seas 1 ft or less. Saturday: Variable winds 5 kt or less. Sunny. Seas 1 ft or less. Saturday Night: Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less. Sunday: Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Partly sunny. Seas 1 ft or less. Sunday Night: Variable winds 5 kt or less. Showers likely, mainly after 4am. Seas 1 ft or less. Columbus Day: Variable winds 5 kt or less. Showers likely. Seas 1 ft or less. Monday Night: Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less. | |
| Marine Point Forecast: 43.31°N 70.57°W Associated Zone Forecast which includes this point | |
Visit your local NWS office at: https://www.weather.gov/gyx/ |
