St. John's River Inlet, Jacksonville, FL to St. Augustine Inlet, FL map preview
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St. John's River Inlet, Jacksonville, FL to St. Augustine Inlet, FL Marine Weather Route Forecast

Short coastal hop between Jacksonville and St. Augustine.

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. John's River Inlet, Jacksonville, FL to St. Augustine Inlet, FL.

Generated: 2026-09-04T10:29:22.137467+00:00 • Distance: 35.1 NM • Departure: 2026-09-04T08:00:00-04:00 • Speed: 6 knots
Time Wind Waves Ocean Current Air/Water
2026-09-04T12:00:00+00:00 3.2937377 kts 0.58 m 0.0 kts E E 24.5 / 27.9 °C
2026-09-04T16:00:00+00:00 10.5831572 kts 0.54 m 0.3 kts NW NW 27.0 / 28.0 °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 3 to 11 kts with waves 1.6 to 1.9 ft with period of 5 seconds. Overall, wind and waves mostly aligned or partially aligned. Wind angles: 67% reaching, 33% on the nose. Sea state: 67% aligned, 33% cross-seas.

More Detail

Points of Sail

CategoryPoint of SailWind AnglePortion of Passage
On the NoseNo-Go Zone0–45°33%
ReachingClose Hauled45–80°33%
ReachingBeam Reach80–110°33%
ReachingBroad Reach110–145°0%
FollowingRun145–180°0%

Sea State & Wave Motion

Sea StateWind vs. WavesBoat MotionPortion of Passage
AlignedWaves run with the windSteady, organized67%
Cross SeasWaves cross the windRolling33%
OpposedWaves against the windChoppy, confused0%
Historical Forecasts Download GPX File

Related Routes

St. Augustine Inlet, FL to St Johns River Inlet, Jacksonville, FL
35.1 NM 6 waypoints
St. John's River Inlet, Jacksonville, FL to Ponce de Leon Inlet, New Smyrna Beach, FL
91.1 NM 6 waypoints
Ft. Pierce Inlet, FL to St. Augustine Inlet, FL
164.8 NM 7 waypoints
Government Cut, Miami, FL to St. Augustine Inlet, FL
271.8 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.