Cuttyhunk Island, MA to Onset, MA map preview
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Cuttyhunk Island, MA to Onset, MA Marine Weather Route Forecast

Primary gateway from the outermost Elizabeth Island to Buzzards Bay mainland.

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 Cuttyhunk Island, MA to Onset, MA.

Generated: 2026-07-21T11:01:57.482250+00:00 • Distance: 23.3 NM • Departure: 2026-07-21T08:00:00-04:00 • Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-07-21T12:00:00+00:00 13.228946500000001 kts 0.84 m 0.2 kts SSW SSW 20.4 / 20.3 °C
2026-07-21T15:53:24.453210+00:00 7.3434152 kts 0.26 m 0.2 kts NW NW 20.5 / 24.9 °C
Locked forecast rows are available to signed-in users.

Route Passage Summary & Sea State

Expect mixed conditions with no major headwinds. Winds range from 7 to 13 kts with waves 0.9 to 2.8 ft with period of 4 to 5 seconds. Overall, wind and waves mostly aligned or partially aligned. Wind angles: 50% following, 50% reaching. Sea state: 100% aligned.

Historical Forecasts Download GPX File

Related Routes

Onset, MA to Cuttyhunk Island, MA
23.3 NM 12 waypoints
Wellfleet, Cape Cod, MA to Onset, MA
33 NM 23 waypoints
Block Island, RI to Cuttyhunk, MA
37 NM 7 waypoints
Cuttyhunk, MA to Block Island, RI
37 NM 7 waypoints

Navigation Responsibility

This forecast is for informational purposes only. You are responsible for your own navigation and safety at sea. Always verify weather conditions with official sources, maintain a proper watch, and exercise prudent seamanship. Do not rely solely on this forecast for critical navigation decisions. See our Terms of Service for full details.