Jacksonville marine weather forecast
Jacksonville (USJAX) is a port in United States at 30°19.0′N 81°39.0′W. Today (Sep 16): ENE wind 14–20 kn, waves 1.2–2.0 m, from the ECMWF IFS run 2026-09-16 00z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 30°19.0′N 81°39.0′W |
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| UN/LOCODE | USJAX |
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| Harbor size | Medium |
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| Harbor type | River natural harbor |
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| Shelter | Excellent |
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| Channel depth | 11 m |
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| Anchorage depth | 11 m |
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| Tide range | 0 m |
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| Pilotage | Compulsory |
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| Time zone | America/New_York |
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Facilities & services (NGA World Port Index)| Tugs | Assistance available |
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| Supplies | Fuel oil, diesel, water, provisions |
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| Repairs | Major (hull, machinery, electrical) |
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| Medical facilities | Available |
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10-day marine forecast — Jacksonville
| Date | Wind | Gusts | Waves |
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| ENE 14–20 kn | 27 kn | 1.2–2.0 m |
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| ENE 16–18 kn | 25 kn | 1.8–2.1 m |
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| NE 11–13 kn | 18 kn | 1.3–1.6 m |
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| ENE 5–10 kn | 14 kn | 0.8–1.1 m |
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| E 4–10 kn | 13 kn | 0.7–0.8 m |
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| ESE 7–10 kn | 13 kn | 0.7–0.7 m |
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| ESE 11–11 kn | 14 kn | 0.9–0.9 m |
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| E 9–9 kn | 13 kn | 0.6–0.6 m |
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| ENE 15–15 kn | 19 kn | 0.8–0.8 m |
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| NE 20–20 kn | 26 kn | 2.0–2.0 m |
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Forecast from the ECMWF IFS model run , waves from ECMWF WAM. Updated with each model cycle; the live chart below recalculates for your departure time and vessel.
What to watch in the forecast
Across the loaded 10-day outlook, the strongest daily modeled wind reaches 20 kn on Sep 16. The highest modeled significant wave height is 2.1 m on Sep 17. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Jacksonville right now?
As of the ECMWF IFS run 2026-09-16 00z: ENE wind 14–20 kn, waves 1.2–2.0 m. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at Jacksonville?
Jacksonville is classed as a medium harbor (river natural harbor), with excellent shelter in the NGA World Port Index.
How deep is the approach to Jacksonville?
Per the NGA World Port Index, the entrance channel carries about 11 m and anchorage depths run about 11 m. Verify against current official charts before entry.
What restricts entry to Jacksonville?
Entry is affected by tidal windows, overhead clearance limits. Check the live forecast on this page and official notices before approach.