Saiki Ko marine weather forecast
Saiki Ko (JPSAE) is a port in Japan at 32°58.0′N 131°56.0′E. Today (Sep 15): N wind 10–11 kn, waves 1.3–1.3 m, from the NOAA GFS run 2026-09-15 18z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 32°58.0′N 131°56.0′E |
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| UN/LOCODE | JPSAE |
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| Harbor size | Small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Fair |
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| Channel depth | 11 m |
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| Anchorage depth | 19 m |
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| Tide range | 2 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, provisions |
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| Repairs | Limited |
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| Medical facilities | Available |
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10-day marine forecast — Saiki Ko
| Date | Wind | Gusts | Waves |
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| N 10–11 kn | 10 kn | 1.3–1.3 m |
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| NE 10–17 kn | 18 kn | 1.3–1.8 m |
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| ENE 18–22 kn | 24 kn | 1.7–1.9 m |
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| ENE 18–22 kn | 21 kn | 2.0–3.0 m |
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| NNW 13–20 kn | 18 kn | 2.9–3.7 m |
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| NNW 30–30 kn | 31 kn | 3.8–4.3 m |
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| NW 12–12 kn | 9 kn | 2.7–4.0 m |
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| SSW 8–8 kn | 8 kn | 1.4–1.4 m |
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| WSW 6–6 kn | 7 kn | 1.0–1.0 m |
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| NW 7–7 kn | 8 kn | 0.9–0.9 m |
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Forecast from the NOAA GFS 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 30 kn on Sep 20. The highest modeled significant wave height is 4.3 m on Sep 20. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Saiki Ko right now?
As of the NOAA GFS run 2026-09-15 18z: N wind 10–11 kn, waves 1.3–1.3 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 Saiki Ko?
Saiki Ko is classed as a small harbor (coastal breakwater harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Saiki Ko?
Per the NGA World Port Index, the entrance channel carries about 11 m and anchorage depths run about 19 m. Verify against current official charts before entry.
What restricts entry to Saiki Ko?
Entry is affected by tidal windows, heavy swell. Check the live forecast on this page and official notices before approach.