St. Catherine's Sound, GA to Sapelo Sound, Blackbeard Island, GA map preview
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St. Catherine's Sound, GA to Sapelo Sound, Blackbeard Island, 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 St. Catherine's Sound, GA to Sapelo Sound, Blackbeard Island, GA.

Generated: 2026-07-21T11:22:42.871991+00:00 • Distance: 19.6 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 9.2872604 kts 0.52 m 0.4 kts NNE NNE 29.6 / 30.9 °C
2026-07-21T15:15:38.197079+00:00 10.313178700000002 kts 0.48 m 0.5 kts N N 29.2 / 31.6 °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 9 to 10 kts with waves 1.6 to 1.7 ft with period of 4 seconds. Overall, periods of cross-seas may create some roll. Wind angles: 100% on the nose. Sea state: 50% aligned, 50% cross-seas.

Historical Forecasts Download GPX File

Related Routes

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

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.