| NWS Forecast for: Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM (ANZ254) Issued by: National Weather Service Norton, MA Last Update: 104 PM EDT Mon May 18 2026 | |
This Afternoon: SE winds around 10 kt. Seas 2 to 3 ft. Wave detail: SE 3 ft at 8 seconds and SW 2 ft at 5 seconds. Patchy fog. Vsby 1 nm or less. Tonight: SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. Patchy fog. Vsby 1 nm or less. Tue: SW winds 15 to 20 kt. Gusts up to 30 kt in the afternoon. Seas 3 to 5 ft. Wave detail: SW 5 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 nm or less, increasing to 1 to 3 nm in the afternoon. Tue Night: SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave detail: S 5 ft at 7 seconds and E 1 foot at 14 seconds. Patchy fog. Vsby 1 nm or less, increasing to 1 to 3 nm after midnight. Wed: SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave detail: S 5 ft at 7 seconds. A chance of showers in the afternoon. Wed Night: W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft after midnight. Wave detail: SW 5 ft at 6 seconds and SE 3 ft at 9 seconds, becoming NW 4 ft at 4 seconds and S 2 ft at 8 seconds. A chance of showers. Thu Through Fri: E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Fri Night: S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. 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 Provincetown MA to Chatham MA to Nantucket MA out 20 NM (ANZ254) | |
Visit your local NWS office at: https://www.weather.gov/boston |