Kashima Ko (JPKSM) — marine weather & port guide
Kashima Ko is a port in Japan at 35°56.0′N 140°42.0′E. Today (Aug 3): NE wind 13–17 kn, waves 3.1–3.3 m, from the ECMWF IFS run 2026-08-03 12z. 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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10-day marine forecast — Kashima Ko
| Date | Wind | Gusts | Waves |
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| NE 13–17 kn | 19 kn | 3.1–3.3 m |
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| NE 10–14 kn | 18 kn | 3.0–3.4 m |
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| NE 5–10 kn | 14 kn | 2.5–2.8 m |
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| SSE 4–9 kn | 11 kn | 2.4–2.5 m |
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| S 8–12 kn | 14 kn | 2.0–2.2 m |
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| SSE 2–10 kn | 12 kn | 2.0–2.0 m |
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| NNE 10–18 kn | 22 kn | 2.1–2.8 m |
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| N 23–23 kn | 33 kn | 3.9–3.9 m |
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| SSW 11–11 kn | 14 kn | 2.2–2.2 m |
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| W 1–1 kn | 7 kn | 1.5–1.5 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.
Frequently asked
How is the weather at Kashima Ko right now?
As of the ECMWF IFS run 2026-08-03 12z: NE wind 13–17 kn, waves 3.1–3.3 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 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.