Sapelo Sound, Blackbeard Island, GA to St Catherines Sound, GA map preview

Sapelo Sound, Blackbeard Island, GA to St Catherines Sound, GA Marine Weather Route Forecast

Georgia coastal route; shoal-sensitive, requires good visibility.

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 Catherines Sound, GA.

Generated: 2026-09-11T10:52:26.176282+00:00Distance: 19.6 NMDeparture: 2026-09-11T08:00:00-04:00Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-09-11T12:00:00+00:00 3.3477334 kts 0.26 m 0.0 kts E E 24.4 / 29.4 °C
2026-09-11T15:15:38.197079+00:00 2.2138237 kts 0.36 m 0.5 kts N N 24.4 / 29.5 °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 2 to 3 kts with waves 0.9 to 1.2 ft with period of 5 seconds. Overall, seas and wind frequently opposed, expect confused motion. Wind angles: 50% following, 50% reaching. Sea state: 50% cross-seas, 50% 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°50%
ReachingBroad Reach110–145°0%
FollowingRun145–180°50%

Sea State & Wave Motion

Sea StateWind vs. WavesBoat MotionPortion of Passage
AlignedWaves run with the windSteady, organized0%
Cross SeasWaves cross the windRolling50%
OpposedWaves against the windChoppy, confused50%

Related Routes

St. Catherine's Sound, GA to Sapelo Sound, Blackbeard Island, GA
19.6 NM 11 waypoints
Sapelo Sound, Blackbeard Island, GA to St. Simons Sound, Brunswick, GA
34.2 NM 7 waypoints
Wassaw Sound, GA to St Catherines Sound, GA
23.2 NM 9 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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