Kojushi Beach
Nagasaki · Japan
Rating right now
Kojushi Beach is a SE-facing sand beach on the Gotō Sea coastline near Nagasaki — it picks up E–S swell and turns cleanest in a W–N 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
17.3°C
63.1°F · 15.7–19°C
Feb
16°C
60.8°F · 14.9–17.3°C
Mar
16.1°C
61°F · 14.2–18.6°C
Apr
17.3°C
63.1°F · 15.5–19.2°C
May
19.5°C
67.1°F · 15.9–21.6°C
Jun
22.4°C
72.3°F · 20–24.6°C
Jul
25.9°C
78.6°F · 22.1–29.9°C
Aug
28.1°C
82.6°F · 26.8–30.2°C
Sep
27.1°C
80.8°F · 25.1–29.5°C
Oct
24.7°C
76.5°F · 23–27.2°C
Nov
21.9°C
71.4°F · 20.4–23.9°C
Dec
19.2°C
66.6°F · 16.9–21°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
E–S
Best wind
W–N
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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