Block Island, RI to Cuttyhunk, MA map preview

Block Island, RI to Cuttyhunk, MA Marine Weather Route Forecast

Scenic, approximately 30-nautical-mile offshore transit that crosses the Rhode Island Sound and the mouth of Buzzards Bay, linking the "Bermuda of the North" with the outermost Elizabeth Island.

Latest Automated Forecast

Optimized for marine passage planning, vessel routing, and coastal or offshore weather tracking. This automated marine weather routing tool updates daily using premium data models. Below is the weather, wave, and ocean current layout for a standard vessel transit from Block Island, RI to Cuttyhunk, MA.

Generated: 2026-09-04T10:30:51.588435+00:00Distance: 37.0 NMDeparture: 2026-09-04T08:00:00-04:00Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-09-04T12:00:00+00:00 7.8293765 kts 0.72 m 0.3 kts SE SE 22.1 / 21.4 °C
2026-09-04T16:00:00+00:00 8.2073464 kts 0.64 m 0.2 kts E E 23.1 / 22.0 °C
Locked forecast rows are available to signed-in users.

Route Passage Summary & Sea State

Expect a majority of reaching conditions with steady motion. Winds range from 4 to 8 kts with waves 2.1 to 2.4 ft with period of 5 to 7 seconds. Overall, seas and wind frequently opposed, expect confused motion. Wind angles: 33% following, 67% reaching. Sea state: 33% cross-seas, 67% opposed.

More Detail

Points of Sail

CategoryPoint of SailWind AnglePortion of Passage
On the NoseNo-Go Zone0–45°0%
ReachingClose Hauled45–80°0%
ReachingBeam Reach80–110°0%
ReachingBroad Reach110–145°67%
FollowingRun145–180°33%

Sea State & Wave Motion

Sea StateWind vs. WavesBoat MotionPortion of Passage
AlignedWaves run with the windSteady, organized0%
Cross SeasWaves cross the windRolling33%
OpposedWaves against the windChoppy, confused67%

Related Routes

Cuttyhunk, MA to Block Island, RI
37 NM 7 waypoints
Block Island, RI to Nantucket, MA
69.8 NM 11 waypoints
Block Island, RI to Onset Harbor, MA
58.1 NM 28 waypoints
Block Island, RI to Atlantic Highlands / Sandy Hook, NJ
130 NM 10 waypoints

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