Coastal Waters Forecast for Block Island Sound (ANZ237) (Text-Only)
NWS Forecast for: Block Island Sound (ANZ237)
Issued by: National Weather Service Norton, MA
Last Update: 403 AM EDT Wed Jul 15 2026




Today: W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave detail: W 4 ft at 6 seconds and SE 2 ft at 8 seconds. Hazy this afternoon.

Tonight: NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: W 3 ft at 5 seconds and S 2 ft at 8 seconds. Hazy.

Thu: W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave detail: SW 3 ft at 5 seconds and S 2 ft at 8 seconds. Hazy.

Thu Night: W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave detail: W 3 ft at 5 seconds and SE 1 foot at 8 seconds. Hazy in the evening.

Fri And Fri Night: SW winds 5 to 10 kt. Seas around 2 ft. Wave detail: SW 2 ft at 5 seconds and SE 1 foot at 8 seconds.

Sat: S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: S 2 ft at 4 seconds and SE 1 foot at 7 seconds. A chance of showers.

Sat Night And Sun: SW winds 10 to 15 kt, becoming W. Gusts up to 20 kt. Seas 2 to 3 ft. Showers.

Sun Night: S winds 5 to 10 kt. Seas 2 to 4 ft.

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: Block Island Sound (ANZ237)

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