ガラスの砂浜
Nagasaki · Japan
Rating right now
ガラスの砂浜 is a S-facing sand beach on the Japan shoreline, opening onto the Gotō Sea — it catches SE–SW swell, and offshore NW–NE winds tidy the banks 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: ~26.6°C (79.9°F) on average
Jan
16.4°C
61.5°F · 14.3–18.8°C
Feb
15.3°C
59.5°F · 13.8–16.9°C
Mar
15.7°C
60.3°F · 13.5–19°C
Apr
16.8°C
62.2°F · 14.7–18.5°C
May
19.2°C
66.6°F · 15–21.2°C
Jun
22.2°C
72°F · 19.8–24.5°C
Jul
25.4°C
77.7°F · 22–28.8°C
Aug
27.6°C
81.7°F · 25.9–29.7°C
Sep
26.6°C
79.9°F · 24.6–28.9°C
Oct
24.2°C
75.6°F · 22.4–26.8°C
Nov
21.1°C
70°F · 19.5–23.5°C
Dec
18.4°C
65.1°F · 15.9–19.9°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
SE–SW
Best wind
NW–NE
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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