Grand Cay, Abacos, Bahamas to St. Mary's Inlet, GA /FL and Fernandina Beach, FL map preview

Grand Cay, Abacos, Bahamas to St. Mary's Inlet, GA /FL and Fernandina Beach, FL Marine Weather Route Forecast

Northern Bahamas to Georgia/Florida border crossing. Utilizes the Gulf Stream. NOTE: Use caution boating shallow Bahamian Banks waters.

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 Grand Cay, Abacos, Bahamas to St. Mary's Inlet, GA /FL and Fernandina Beach, FL.

Generated: 2026-09-04T10:49:25.012864+00:00Distance: 300.9 NMDeparture: 2026-09-04T08:00:00-04:00Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-09-04T12:00:00+00:00 9.6652303 kts 0.58 m 0.8 kts NNW NNW 28.4 / 30.6 °C
2026-09-04T16:00:00+00:00 7.2894195 kts 0.42 m 0.5 kts E E 27.0 / 30.7 °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 1 to 13 kts with waves 1.2 to 2.4 ft with period of 4 to 8 seconds. Overall, periods of cross-seas may create some roll. Wind angles: 43% following, 43% reaching, 14% on the nose. Sea state: 93% cross-seas, 7% opposed.

More Detail

Points of Sail

CategoryPoint of SailWind AnglePortion of Passage
On the NoseNo-Go Zone0–45°14%
ReachingClose Hauled45–80°7%
ReachingBeam Reach80–110°7%
ReachingBroad Reach110–145°29%
FollowingRun145–180°43%

Sea State & Wave Motion

Sea StateWind vs. WavesBoat MotionPortion of Passage
AlignedWaves run with the windSteady, organized0%
Cross SeasWaves cross the windRolling93%
OpposedWaves against the windChoppy, confused7%

Related Routes

St. Mary's Inlet, GA /FL and Fernandina Beach, FL to Grand Cay, Abacos, Bahamas
304.4 NM 10 waypoints
Charleston Harbor, SC to St. Mary's Inlet, GA /FL and Fernandina Beach, FL
151.6 NM 7 waypoints
Ft. Pierce Inlet, FL to St. Mary's Inlet, GA /FL and Fernandina Beach, FL
207.7 NM 6 waypoints
Government Cut, Miami, FL to St. Mary's Inlet, GA /FL and Fernandina Beach, FL
315.8 NM 9 waypoints

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