St. Simons Sound, Brunswick, GA to Sapelo Sound, Blackbeard Island, GA map preview
← Back to Maritime Weather Routing Library

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

Generated: 2026-07-28T11:13:15.451751+00:00 • Distance: 34.2 NM • Departure: 2026-07-28T08:00:00-04:00 • Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-07-28T12:00:00+00:00 3.5097205000000002 kts 0.16 m 0.2 kts SW SW 26.7 / 31.4 °C
2026-07-28T16:00:00+00:00 2.1058323 kts 0.32 m 0.3 kts E E 29.1 / 31.4 °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 4 kts with waves 0.5 to 1.0 ft with period of 6 to 8 seconds. Overall, seas and wind frequently opposed, expect confused motion. Wind angles: 33% following, 67% reaching. Sea state: 33% aligned, 33% cross-seas, 33% opposed.

Historical Forecasts Download GPX File

Related Routes

Sapelo Sound, Blackbeard Island, GA to St. Simons Sound, Brunswick, GA
34.2 NM 7 waypoints
St. Catherine's Sound, GA to Sapelo Sound, Blackbeard Island, GA
19.6 NM 11 waypoints
St. Simons Sound, Brunswick, GA to St. Mary's Inlet, GA /FL and Fernandina Beach, FL
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

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.