Block Island Sound Marine Forecast

The Marine Weather Forecast In Detail:

ANZ237 Forecast Issued: 1003 AM EDT Fri May 15 2026

This Afternoon...W Winds 5 To 10 Kt. Seas 3 To 5 Ft. Wave Detail: Se 5 Ft At 10 Seconds And Sw 2 Ft At 7 Seconds. Scattered Showers.
Tonight...N Winds 5 To 10 Kt, Becoming W After Midnight. Seas 4 To 6 Ft. Wave Detail: Se 5 Ft At 9 Seconds And Sw 2 Ft At 6 Seconds. Patchy Fog. Vsby 1 To 3 Nm.
Sat...Sw Winds 5 To 10 Kt, Increasing To 10 To 15 Kt With Gusts Up To 20 Kt In The Afternoon. Seas 2 To 4 Ft. Wave Detail: Se 4 Ft At 10 Seconds And Sw 3 Ft At 5 Seconds. Patchy Fog In The Morning.
Sat Night...Sw Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 2 To 4 Ft. Wave Detail: Sw 4 Ft At 6 Seconds And Se 3 Ft At 9 Seconds.
Sun...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: W 3 Ft At 6 Seconds And Se 2 Ft At 9 Seconds.
Sun Night...W Winds 5 To 10 Kt, Becoming N After Midnight. Seas 2 To 3 Ft. Wave Detail: Sw 3 Ft At 7 Seconds And Se 2 Ft At 8 Seconds.
Mon Through Tue Night...Sw Winds 10 To 15 Kt With Gusts Up To 20 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.