| NWS Forecast for: Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island (ANZ256) Issued by: National Weather Service Norton, MA Last Update: 404 AM EDT Mon Aug 31 2026 | |
| Today: NE winds around 10 kt, becoming E this afternoon. Seas 2 to 3 ft. Wave detail: W 2 ft at 5 seconds and N 1 foot at 3 seconds. Tonight: SE winds 5 to 10 kt. Seas around 2 ft. Wave detail: E 1 foot at 3 seconds and SW 1 foot at 5 seconds. Patchy fog after midnight. Showers likely after midnight. Tue: SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave detail: SE 3 ft at 4 seconds and SW 1 foot at 4 seconds. Patchy fog. Showers likely in the morning. A chance of showers in the afternoon. Vsby 1 to 3 nm in the morning. Tue Night: E winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: E 3 ft at 5 seconds and SE 3 ft at 12 seconds. A chance of showers. Wed: E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave detail: SE 4 ft at 6 seconds. A chance of showers in the afternoon. Wed Night: SE winds 10 to 15 kt, becoming S after midnight. Seas 3 to 4 ft. Wave detail: NE 4 ft at 5 seconds and SE 4 ft at 8 seconds. A chance of showers in the evening, then showers likely with a chance of tstms after midnight. Thu And Thu Night: SW winds 10 to 15 kt, becoming W. Seas around 3 ft. A chance of showers and tstms. Fri And Fri Night: NW winds 5 to 10 kt, increasing to 10 to 15 kt. Seas around 3 ft. winds and seas higher in and near tstms. seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. | |
| Zone Forecast: Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island (ANZ256) | |
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