Sapelo Sound, Blackbeard Island, GA to St. Simons Sound, Brunswick, GA map preview

Sapelo Sound, Blackbeard Island, GA to St. Simons Sound, Brunswick, GA Marine Weather Route Forecast

Georgia coast passage prone to shifting shoals; favor deeper water offshore.

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 Sapelo Sound, Blackbeard Island, GA to St. Simons Sound, Brunswick, GA.

Generated: 2026-09-04T10:51:54.287043+00:00Distance: 34.2 NMDeparture: 2026-09-04T08:00:00-04:00Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-09-04T12:00:00+00:00 2.5917936 kts 0.52 m 0.2 kts NNE NNE 26.8 / 29.5 °C
2026-09-04T16:00:00+00:00 5.0755958 kts 0.46 m 0.3 kts NW NW 27.7 / 30.1 °C
Locked forecast rows are available to signed-in users.

Route Passage Summary & Sea State

Expect significant time on the nose, expect a more demanding trip. Winds range from 3 to 5 kts with waves 1.2 to 1.7 ft with period of 4 to 5 seconds. Overall, wind and waves mostly aligned or partially aligned. Wind angles: 33% following, 33% reaching, 33% on the nose. Sea state: 67% aligned, 33% cross-seas.

More Detail

Points of Sail

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

Sea State & Wave Motion

Sea StateWind vs. WavesBoat MotionPortion of Passage
AlignedWaves run with the windSteady, organized67%
Cross SeasWaves cross the windRolling33%
OpposedWaves against the windChoppy, confused0%

Related Routes

St. Simons Sound, Brunswick, GA to Sapelo Sound, Blackbeard Island, GA
34.2 NM 7 waypoints
Sapelo Sound, Blackbeard Island, GA to St Catherines Sound, GA
19.6 NM 11 waypoints
St. Mary's Inlet, GA /FL and Fernandina Beach, FL to St Simons Sound, Brunswick, GA
27.8 NM 7 waypoints
Port Royal Sound, Hilton Head Island, SC to St. Mary's Inlet, GA /FL and Fernandina Beach, FL
102.1 NM 9 waypoints

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