Charleston Harbor, SC to Government Cut, Miami, FL map preview
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Charleston Harbor, SC to Government Cut, Miami, FL Marine Weather Route Forecast

Major offshore passage requiring stable weather.

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 Charleston Harbor, SC to Government Cut, Miami, FL.

Generated: 2026-10-19T10:46:27.107766+00:00 • Distance: 425.8 NM • Departure: 2026-10-19T08:00:00-04:00 • Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-10-19T12:00:00+00:00 8.7473034 kts 1.1 m 0.7 kts SW SW 10.6 / 22.2 °C
2026-10-19T16:00:00+00:00 15.8747358 kts 2.3 m 0.9 kts WSW WSW 16.1 / 24.1 °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 17 kts with waves 2.2 to 10.0 ft with period of 7 to 10 seconds. Overall, wind and waves mostly aligned or partially aligned. Wind angles: 84% following, 16% reaching. Sea state: 68% aligned, 32% cross-seas.

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°0%
ReachingBroad Reach110–145°16%
FollowingRun145–180°84%

Sea State & Wave Motion

Sea StateWind vs. WavesBoat MotionPortion of Passage
AlignedWaves run with the windSteady, organized68%
Cross SeasWaves cross the windRolling32%
OpposedWaves against the windChoppy, confused0%
Historical Forecasts Download GPX File

Related Routes

Government Cut, Miami, FL to Charleston Harbor, SC
433.2 NM 9 waypoints
Beaufort Inlet, NC to Government Cut, Miami, FL
598.6 NM 10 waypoints
Bimini, Bahamas to Government Cut, Miami, FL
42.9 NM 6 waypoints
Ft. Pierce Inlet, FL to Government Cut, Miami, FL
109.7 NM 7 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.