Tagonoura Ko marine weather forecast
Tagonoura Ko (JPTGO) is a port in Japan at 35°8.0′N 138°42.0′E. Today (Sep 19): NE wind 22–28 kn, waves 3.4–3.8 m, from the ECMWF IFS run 2026-09-19 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°8.0′N 138°42.0′E |
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| UN/LOCODE | JPTGO |
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| Harbor size | Medium |
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| Harbor type | River basin harbor |
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| Shelter | Good |
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| Channel depth | 8 m |
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| Tide range | 1 m |
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| Pilotage | Advisable |
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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 — Tagonoura Ko
| Date | Wind | Gusts | Waves |
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| NE 22–28 kn | 35 kn | 3.4–3.8 m |
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| NE 20–25 kn | 35 kn | 3.3–3.6 m |
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| ESE 15–36 kn | 47 kn | 3.1–5.7 m |
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| SSE 9–15 kn | 22 kn | 1.4–2.6 m |
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| ESE 5–17 kn | 21 kn | 1.5–1.8 m |
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| NNE 10–11 kn | 14 kn | 1.1–1.3 m |
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| NNE 17–17 kn | 21 kn | 1.4–1.4 m |
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| NNE 17–17 kn | 23 kn | 1.3–1.3 m |
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| SW 14–14 kn | 27 kn | 1.0–1.0 m |
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| ESE 8–8 kn | 13 kn | 1.3–1.3 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 36 kn on Sep 21. The highest modeled significant wave height is 5.7 m on Sep 21. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Tagonoura Ko right now?
As of the ECMWF IFS run 2026-09-19 00z: NE wind 22–28 kn, waves 3.4–3.8 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 Tagonoura Ko?
Tagonoura Ko is classed as a medium harbor (river basin harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Tagonoura Ko?
Per the NGA World Port Index, the entrance channel carries about 8 m. Verify against current official charts before entry.
What restricts entry to Tagonoura Ko?
Entry is affected by overhead clearance limits. Check the live forecast on this page and official notices before approach.