Osaka to Higashi-Harima — sea route & marine weather
The sea route from Osaka (JPOSA) to Higashi-Harima (JPHHR) is about 30 nm — about 3 hours at 10 kn. Along the route today (Sep 17): NE wind 8–12 kn, waves 0.3–0.5 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 30 nm |
|---|
| Passage time at 10 kn | about 3 hours |
|---|
| Great-circle distance | 30 nm |
|---|
| Osaka | 34°39.0′N 135°26.0′E |
|---|
| Higashi-Harima | 34°42.0′N 134°50.0′E |
|---|
| Reference vessel | 4.5 m draft, 10 kn cruise |
|---|
10-day marine forecast — along the route
| Date | Wind | Gusts | Waves |
|---|
| NE 8–12 kn | 17 kn | 0.3–0.5 m |
|---|
| E 2–10 kn | 16 kn | 0.2–0.4 m |
|---|
| NE 5–13 kn | 19 kn | 0.3–0.6 m |
|---|
| NNW 13–16 kn | 24 kn | 0.5–0.6 m |
|---|
| NNW 11–16 kn | 24 kn | 0.4–0.6 m |
|---|
| N 9–14 kn | 18 kn | 0.4–0.5 m |
|---|
| NNE 3–8 kn | 10 kn | 0.1–0.2 m |
|---|
| N 10–10 kn | 18 kn | 0.3–0.3 m |
|---|
| NE 7–7 kn | 13 kn | 0.3–0.3 m |
|---|
| S 18–18 kn | 25 kn | 0.9–0.9 m |
|---|
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 far is it from Osaka to Higashi-Harima by sea?
The water route is 30 nm (56 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Higashi-Harima to Osaka.
How long does the passage from Osaka to Higashi-Harima take?
about 3 hours at a 10 kn cruise. Scale by your own speed: at half the speed it takes about twice as long. The planner on this page recalculates for your vessel and live weather.
What is the weather between Osaka and Higashi-Harima today?
Along the route today, per the ECMWF IFS run 2026-09-17 12z: NE wind 8–12 kn, waves 0.3–0.5 m. The day-by-day table on this page covers the next 10 days.