Kashima Ko marine weather forecast
Kashima Ko (JPKSM) is a port in Japan at 35°56.0′N 140°42.0′E. Today (Sep 14): SSW wind 3–18 kn, waves 1.3–1.7 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 | 35°56.0′N 140°42.0′E |
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| UN/LOCODE | JPKSM |
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| Harbor size | Small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Excellent |
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| Channel depth | 19 m |
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| Anchorage depth | 22 m |
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| Tide range | 0 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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| Medical facilities | Available |
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10-day marine forecast — Kashima Ko
| Date | Wind | Gusts | Waves |
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| SSW 3–18 kn | 23 kn | 1.3–1.7 m |
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| NNW 3–16 kn | 21 kn | 1.5–1.6 m |
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| NNE 18–22 kn | 30 kn | 1.8–2.3 m |
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| NNE 20–23 kn | 30 kn | 2.2–2.3 m |
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| NNE 14–24 kn | 30 kn | 2.3–2.6 m |
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| NNE 6–12 kn | 15 kn | 2.7–2.9 m |
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| N 6–6 kn | 7 kn | 2.3–2.3 m |
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| NE 5–5 kn | 9 kn | 2.0–2.0 m |
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| ESE 4–4 kn | 5 kn | 1.6–1.6 m |
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| N 43–43 kn | 66 kn | 4.0–4.0 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 43 kn on Sep 23. The highest modeled significant wave height is 4.0 m on Sep 23. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Kashima Ko right now?
As of the ECMWF IFS run 2026-09-14 00z: SSW wind 3–18 kn, waves 1.3–1.7 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 Kashima Ko?
Kashima Ko is classed as a small harbor (coastal breakwater harbor), with excellent shelter in the NGA World Port Index.
How deep is the approach to Kashima Ko?
Per the NGA World Port Index, the entrance channel carries about 19 m and anchorage depths run about 22 m. Verify against current official charts before entry.
What restricts entry to Kashima Ko?
Entry is affected by overhead clearance limits. Check the live forecast on this page and official notices before approach.