St. Mary's Inlet, GA /FL and Fernandina Beach, FL to St Simons Sound, Brunswick, GA map preview
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St. Mary's Inlet, GA /FL and Fernandina Beach, FL to St Simons Sound, Brunswick, GA Marine Weather Route Forecast

Close-to-shore coastal hop; watch for shoals near inlets.

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 St Simons Sound, Brunswick, GA.

Generated: 2026-07-28T11:08:23.596450+00:00 • Distance: 27.8 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 3.8876904000000003 kts 0.36 m 0.0 kts E E 25.6 / 30.4 °C
2026-07-28T16:00:00+00:00 3.9416861 kts 0.26 m 0.3 kts E E 29.1 / 31.6 °C
Locked forecast rows are available to signed-in users.

Route Passage Summary & Sea State

Expect mostly following winds with generally comfortable motion. Winds range from 4 to 7 kts with waves 0.9 to 1.2 ft with period of 6 to 8 seconds. Overall, seas and wind frequently opposed, expect confused motion. Wind angles: 67% following, 33% reaching. Sea state: 33% aligned, 33% cross-seas, 33% opposed.

Historical Forecasts Download GPX File

Related Routes

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

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.