一宮
Chiba · Japan
Rating right now
一宮 is a E-facing sand beach on the Japan shoreline, opening onto the Uchi Sea — it catches NE–SE swell, and offshore SW–NW 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: ~25.3°C (77.5°F) on average
Jan
17.2°C
63°F · 14.4–19°C
Feb
15.7°C
60.3°F · 13.8–18.6°C
Mar
15.7°C
60.3°F · 13.5–18.6°C
Apr
17.2°C
63°F · 15.5–19.4°C
May
19°C
66.2°F · 15.9–23°C
Jun
21.4°C
70.5°F · 18.6–23.5°C
Jul
23.5°C
74.3°F · 21–27°C
Aug
25.7°C
78.3°F · 23.6–28.1°C
Sep
25.3°C
77.5°F · 23.1–27.2°C
Oct
23.4°C
74.1°F · 19.8–25.8°C
Nov
21.2°C
70.2°F · 19.1–23.3°C
Dec
18.7°C
65.7°F · 16.5–20.4°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
NE–SE
Best wind
SW–NW
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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