| NWS Forecast for: 10NM S Portsmouth NH Atlantic Ocean Issued by: National Weather Service Gray/Portland, ME Last Update: 2:31 pm EDT Oct 13, 2026 |  |
Tonight: SSE wind 20 to 25 km/h becoming S 15 to 20 km/h in the evening. A chance of rain and thunderstorms, mainly before midnight. Areas of dense fog. Seas around 1 m. Wednesday: WSW wind 15 to 20 km/h becoming WNW in the afternoon. Patchy dense fog before 9am. Seas around 1 m. Wednesday Night: NW wind 15 to 20 km/h increasing to 20 to 25 km/h after midnight. Winds could gust as high as 35 km/h. Mostly clear. Seas around 1 m. Thursday: NNW wind 10 to 15 km/h decreasing to 5 to 10 km/h in the afternoon. Sunny. Seas around 1 m. Thursday Night: N wind 5 to 10 km/h becoming S after midnight. A chance of showers after 4am. Seas 1 m or less. Friday: SSE wind 20 to 23 km/h increasing to 22 to 25 km/h in the morning. Winds could gust as high as 35 km/h. Showers, mainly after 8am. Seas 1 m or less. Friday Night: WNW wind 25 to 30 km/h increasing to 30 to 35 km/h after midnight. Winds could gust as high as 50 km/h. Showers likely, mainly before 11pm. Seas around 1 m. Saturday: WNW wind around 40 km/h, with gusts as high as 60 km/h. Mostly sunny. Seas around 1 m. Saturday Night: W wind 22 to 25 km/h decreasing to 20 to 23 km/h after midnight. Winds could gust as high as 40 km/h. Mostly clear. Seas 1 m or less. | |
| Marine Point Forecast: 42.9°N 70.79°W Associated Zone Forecast which includes this point | |
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