Government Cut, Miami, FL to St. Mary's Inlet, GA /FL and Fernandina Beach, FL map preview
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Government Cut, Miami, FL to St. Mary's Inlet, GA /FL and Fernandina Beach, FL Marine Weather Route Forecast

Extended offshore run; experienced crews only with favorable forecast.

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 Government Cut, Miami, FL to St. Mary's Inlet, GA /FL and Fernandina Beach, FL.

Generated: 2026-07-28T11:16:13.355644+00:00 • Distance: 315.8 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 6.101514100000001 kts 0.12 m 0.5 kts N N 27.6 / 31.4 °C
2026-07-28T16:00:00+00:00 8.9632862 kts 0.3 m 1.9 kts N N 29.6 / 30.6 °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 6 to 18 kts with waves 0.4 to 1.9 ft with period of 4 to 6 seconds. Overall, periods of cross-seas may create some roll. Wind angles: 7% following, 87% reaching, 7% on the nose. Sea state: 20% aligned, 67% cross-seas, 13% opposed.

Historical Forecasts Download GPX File

Related Routes

Ft. Pierce Inlet, FL to St. Mary's Inlet, GA /FL and Fernandina Beach, FL
207.7 NM 6 waypoints
Government Cut, Miami, FL to Beaufort Inlet, NC
598.1 NM 9 waypoints
Government Cut, Miami, FL to Bimini, Bahamas
42.9 NM 6 waypoints
Government Cut, Miami, FL to Charleston Harbor, SC
433.2 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.