Oita Ko (JPOIT) — marine weather & port guide
Oita Ko is a port in Japan at 33°15.0′N 131°40.0′E. Today (Aug 3): ENE wind 14–16 kn, waves 1.9–2.4 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 | 33°15.0′N 131°40.0′E |
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| UN/LOCODE | JPOIT |
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| Harbor size | Very small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Fair |
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| Channel depth | 23 m |
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| Anchorage depth | 23 m |
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| Tide range | 2 m |
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| Pilotage | Advisable |
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| Time zone | Asia/Tokyo |
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10-day marine forecast — Oita Ko
| Date | Wind | Gusts | Waves |
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| ENE 14–16 kn | 23 kn | 1.9–2.4 m |
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| ENE 16–19 kn | 25 kn | 2.6–3.8 m |
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| ENE 23–26 kn | 34 kn | 4.2–5.5 m |
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| E 25–29 kn | 38 kn | 5.2–5.7 m |
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| ESE 18–25 kn | 33 kn | 3.9–4.8 m |
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| ESE 16–20 kn | 26 kn | 2.9–3.4 m |
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| ESE 9–13 kn | 16 kn | 2.3–2.5 m |
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| SE 11–11 kn | 14 kn | 2.2–2.2 m |
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| SSE 7–7 kn | 16 kn | 2.2–2.2 m |
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| ESE 10–10 kn | 15 kn | 1.6–1.6 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 Oita Ko right now?
As of the ECMWF IFS run 2026-08-03 12z: ENE wind 14–16 kn, waves 1.9–2.4 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 Oita Ko?
Oita Ko is classed as a very small harbor (coastal breakwater harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Oita Ko?
Per the NGA World Port Index, the entrance channel carries about 23 m and anchorage depths run about 23 m. Verify against current official charts before entry.