本渡海水浴場
Kumamoto · Japan
Rating right now
本渡海水浴場 is a N-facing sand beach on the Yatsushiro Sea coastline near Kumamoto — it picks up NW–NE swell and turns cleanest in a SE–SW wind, with the most consistent surf through april–october.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~27.1°C (80.8°F) on average
Jan
17.2°C
63°F · 14.8–19.2°C
Feb
16.2°C
61.2°F · 15–17.9°C
Mar
16.6°C
61.9°F · 14.2–20.2°C
Apr
17.8°C
64°F · 15.8–19.7°C
May
19.9°C
67.8°F · 15.7–21.8°C
Jun
22.8°C
73°F · 20–24.8°C
Jul
26.1°C
79°F · 23.8–29.9°C
Aug
28.1°C
82.6°F · 26.5–29.9°C
Sep
27.1°C
80.8°F · 25.2–29.1°C
Oct
24.7°C
76.5°F · 22.7–27.3°C
Nov
21.6°C
70.9°F · 20–24°C
Dec
19°C
66.2°F · 16.8–20.4°C
25-year monthly averages from the NOAA OISST satellite record — typical range min–max, not a live reading.
Know before you go
Best swell
NW–NE
Best wind
SE–SW
Break type
Beach break
Best season
April–October
Safety: Friendly by surf standards, but rip currents and drop-in etiquette still apply. Shifting sandbars create moving rip currents — learn to spot them and use them to get out back.
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