Ishikari Bay New Port marine weather forecast
Ishikari Bay New Port (JPISI) is a port in Japan at 43°13.0′N 141°17.0′E. Today (Sep 17): NNW wind 0–1 kn, waves 0.3–0.5 m, from the ECMWF IFS run 2026-09-17 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 | 43°13.0′N 141°17.0′E |
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| UN/LOCODE | JPISI |
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| Harbor size | Medium |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Fair |
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| Channel depth | 9 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 | Water |
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| Medical facilities | Available |
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10-day marine forecast — Ishikari Bay New Port
| Date | Wind | Gusts | Waves |
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| NNW 0–1 kn | 3 kn | 0.3–0.5 m |
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| NNE 2–5 kn | 16 kn | 0.4–0.6 m |
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| NNE 1–4 kn | 13 kn | 0.3–0.4 m |
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| N 1–2 kn | 9 kn | 0.3–0.4 m |
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| NNE 3–3 kn | 11 kn | 0.4–1.6 m |
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| N 1–9 kn | 11 kn | 1.3–1.5 m |
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| SSW 6–8 kn | 10 kn | 1.3–1.3 m |
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| W 3–3 kn | 24 kn | 2.4–2.4 m |
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| SW 3–3 kn | 22 kn | 2.3–2.3 m |
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| SW 8–8 kn | 36 kn | 1.9–1.9 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 9 kn on Sep 22. The highest modeled significant wave height is 2.4 m on Sep 24. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Ishikari Bay New Port right now?
As of the ECMWF IFS run 2026-09-17 12z: NNW wind 0–1 kn, waves 0.3–0.5 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 Ishikari Bay New Port?
Ishikari Bay New Port is classed as a medium harbor (coastal breakwater harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Ishikari Bay New Port?
Per the NGA World Port Index, the entrance channel carries about 9 m. Verify against current official charts before entry.