Block Island Sound Marine Forecast

The Marine Weather Forecast In Detail:

ANZ237 Forecast Issued: 403 PM EDT Sat Apr 04 2026

Tonight...E Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt After Midnight. Gusts Up To 25 Kt. Seas 2 To 4 Ft. Wave Detail: E 4 Ft At 6 Seconds And S 1 Foot At 6 Seconds. Patchy Drizzle. Isolated Showers After Midnight.
Sun...Sw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft, Building To 5 To 8 Ft In The Afternoon. Wave Detail: S 4 Ft At 6 Seconds, Becoming S 5 Ft At 7 Seconds. Patchy Drizzle In The Morning, Then Showers In The Afternoon.
Sun Night...W Winds 10 To 15 Kt, Becoming Nw After Midnight. Gusts Up To 25 Kt. Seas 5 To 7 Ft. Wave Detail: S 5 Ft At 8 Seconds And Sw 2 Ft At 5 Seconds. Showers In The Evening.
Mon...W Winds Around 15 Kt With Gusts Up To 20 Kt. Seas 3 To 5 Ft. Wave Detail: S 5 Ft At 8 Seconds And W 2 Ft At 4 Seconds.
Mon Night...W Winds 10 To 15 Kt With Gusts Up To 20 Kt, Diminishing To 5 To 10 Kt After Midnight. Seas 2 To 4 Ft. Wave Detail: S 3 Ft At 8 Seconds And W 2 Ft At 4 Seconds.
Tue...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: W 3 Ft At 4 Seconds And S 3 Ft At 7 Seconds. A Chance Of Showers.
Tue Night...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft.
Wed Through Thu...S Winds 10 To 15 Kt. Seas 2 To 4 Ft.
Thu Night...S Winds 10 To 15 Kt. Seas 3 To 5 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.