Kawasaki Ko marine weather forecast
Kawasaki Ko (JPKWS) is a port in Japan at 35°30.0′N 139°46.0′E. Today (Sep 17): NNE wind 24–31 kn, waves 2.7–3.3 m, from the ECMWF IFS run 2026-09-17 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 | 35°30.0′N 139°46.0′E |
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| UN/LOCODE | JPKWS |
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| Harbor size | Large |
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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 | 17 m |
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| Tide range | 4 m |
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| Pilotage | Compulsory |
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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, 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 — Kawasaki Ko
| Date | Wind | Gusts | Waves |
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| NNE 24–31 kn | 42 kn | 2.7–3.3 m |
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| NNE 27–30 kn | 43 kn | 3.2–3.4 m |
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| NNE 22–27 kn | 36 kn | 3.5–3.6 m |
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| NNE 31–46 kn | 77 kn | 4.3–6.8 m |
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| NE 4–20 kn | 25 kn | 2.1–4.0 m |
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| ENE 18–19 kn | 24 kn | 1.8–1.9 m |
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| ENE 13–13 kn | 16 kn | 1.4–1.4 m |
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| N 2–2 kn | 12 kn | 0.9–0.9 m |
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| ENE 15–15 kn | 21 kn | 1.4–1.4 m |
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| SE 10–10 kn | 13 kn | 1.0–1.0 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 46 kn on Sep 20. The highest modeled significant wave height is 6.8 m on Sep 20. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Kawasaki Ko right now?
As of the ECMWF IFS run 2026-09-17 00z: NNE wind 24–31 kn, waves 2.7–3.3 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 Kawasaki Ko?
Kawasaki Ko is classed as a large harbor (coastal breakwater harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Kawasaki Ko?
Per the NGA World Port Index, the entrance channel carries about 11 m and anchorage depths run about 17 m. Verify against current official charts before entry.
What restricts entry to Kawasaki Ko?
Entry is affected by overhead clearance limits. Check the live forecast on this page and official notices before approach.