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

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

Georgia/Florida border crossing to Northern Bahamas. Crosses the Gulf Stream. NOTE: Caution crossing shallow Bahamas 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 St. Mary's Inlet, GA /FL and Fernandina Beach, FL to Grand Cay, Abacos, Bahamas.

Generated: 2026-09-04T10:34:56.323658+00:00Distance: 304.4 NMDeparture: 2026-09-04T08:00:00-04:00Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-09-04T12:00:00+00:00 5.8315356000000005 kts 0.66 m 0.1 kts N N 24.5 / 29.1 °C
2026-09-04T16:00:00+00:00 9.8272174 kts 0.82 m 0.5 kts NW NW 25.7 / 28.5 °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 2 to 10 kts with waves 0.9 to 2.8 ft with period of 3 to 7 seconds. Overall, seas and wind frequently opposed, expect confused motion. Wind angles: 7% following, 57% reaching, 36% on the nose. Sea state: 7% aligned, 57% cross-seas, 36% opposed.

More Detail

Points of Sail

CategoryPoint of SailWind AnglePortion of Passage
On the NoseNo-Go Zone0–45°36%
ReachingClose Hauled45–80°50%
ReachingBeam Reach80–110°7%
ReachingBroad Reach110–145°0%
FollowingRun145–180°7%

Sea State & Wave Motion

Sea StateWind vs. WavesBoat MotionPortion of Passage
AlignedWaves run with the windSteady, organized7%
Cross SeasWaves cross the windRolling57%
OpposedWaves against the windChoppy, confused36%

Related Routes

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

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