| NWS Forecast for: 6NM SSE Portsmouth NH Atlantic Ocean Issued by: National Weather Service Gray/Portland, ME Last Update: 6:15 pm EDT Jul 18, 2026 | |
Tonight: S wind around 10 kt becoming WSW after midnight. A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Areas of smoke before 1am. Seas around 3 ft. Sunday: WNW wind around 10 kt. Sunny. Seas 1 to 2 ft. Sunday Night: Variable winds 5 kt or less. Clear. Seas around 1 ft. Monday: Variable winds 5 kt or less. Sunny. Seas around 1 ft. Monday Night: Variable winds 5 kt or less. Partly cloudy. Seas 1 to 2 ft. Tuesday: SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Partly sunny. Seas 1 to 2 ft. Tuesday Night: SSE wind around 10 kt. Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 2am, then showers after 2am. Seas around 2 ft. Wednesday: SSW wind around 10 kt. Showers, with thunderstorms also possible after 2pm. Seas 2 to 3 ft. Wednesday Night: WSW wind 5 to 10 kt. Showers likely and possibly a thunderstorm. Seas around 3 ft. | |
| Marine Point Forecast: 42.98°N 70.74°W Associated Zone Forecast which includes this point | |
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