Omaezaki Ko marine weather forecast
Omaezaki Ko (JPOMZ) is a port in Japan at 34°36.0′N 138°14.0′E. Today (Sep 14): S wind 7–11 kn, waves 0.9–1.1 m, from the ECMWF IFS run 2026-09-14 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 | 34°36.0′N 138°14.0′E |
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| UN/LOCODE | JPOMZ |
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| Harbor size | Small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Good |
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| Channel depth | 11 m |
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| Anchorage depth | 8 m |
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| Tide range | 2 m |
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| Time zone | Asia/Tokyo |
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Facilities & services (NGA World Port Index)| Tugs | Assistance available |
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| Supplies | Fuel oil, water |
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| Repairs | Limited |
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10-day marine forecast — Omaezaki Ko
| Date | Wind | Gusts | Waves |
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| S 7–11 kn | 16 kn | 0.9–1.1 m |
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| WSW 5–10 kn | 15 kn | 1.0–1.2 m |
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| ENE 4–11 kn | 19 kn | 1.0–1.4 m |
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| E 6–12 kn | 16 kn | 1.2–1.4 m |
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| ENE 1–15 kn | 19 kn | 1.4–2.1 m |
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| ENE 7–18 kn | 23 kn | 2.6–2.9 m |
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| E 16–16 kn | 20 kn | 2.9–2.9 m |
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| E 15–15 kn | 21 kn | 2.5–2.5 m |
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| ESE 17–17 kn | 24 kn | 2.7–2.7 m |
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| WNW 31–31 kn | 52 kn | 3.5–3.5 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 31 kn on Sep 23. The highest modeled significant wave height is 3.5 m on Sep 23. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Omaezaki Ko right now?
As of the ECMWF IFS run 2026-09-14 00z: S wind 7–11 kn, waves 0.9–1.1 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 Omaezaki Ko?
Omaezaki Ko is classed as a small harbor (coastal breakwater harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Omaezaki Ko?
Per the NGA World Port Index, the entrance channel carries about 11 m and anchorage depths run about 8 m. Verify against current official charts before entry.