Wakayama-Shimotsu Ko to Higashi-Harima — sea route & marine weather
The sea route from Wakayama-Shimotsu Ko (JPWAK) to Higashi-Harima (JPHHR) is about 56 nm — about 6 hours at 10 kn. Along the route today (Nov 2): NW wind 10–12 kn, waves 0.4–0.5 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 56 nm |
|---|
| Passage time at 10 kn | about 6 hours |
|---|
| Great-circle distance | 33 nm |
|---|
| Wakayama-Shimotsu Ko | 34°12.0′N 135°8.0′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 |
|---|
| NW 10–12 kn | 18 kn | 0.4–0.5 m |
|---|
| NNE 10–12 kn | 19 kn | 0.3–0.5 m |
|---|
| ENE 10–15 kn | 22 kn | 0.4–0.8 m |
|---|
| ENE 4–10 kn | 15 kn | 0.4–0.6 m |
|---|
| NW 12–16 kn | 23 kn | 0.5–0.7 m |
|---|
| NNW 9–17 kn | 21 kn | 0.4–0.8 m |
|---|
| N 7–10 kn | 13 kn | 0.2–0.4 m |
|---|
| N 8–8 kn | 20 kn | 0.3–0.3 m |
|---|
| NNE 11–11 kn | 22 kn | 0.5–0.5 m |
|---|
| NNE 11–11 kn | 19 kn | 0.4–0.4 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 Wakayama-Shimotsu Ko to Higashi-Harima by sea?
The water route is 56 nm (104 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Higashi-Harima to Wakayama-Shimotsu Ko.
How long does the passage from Wakayama-Shimotsu Ko to Higashi-Harima take?
about 6 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 Wakayama-Shimotsu Ko and Higashi-Harima today?
Along the route today, per the ECMWF IFS run 2026-11-02 12z: NW wind 10–12 kn, waves 0.4–0.5 m. The day-by-day table on this page covers the next 10 days.