ariasurf

大賀海岸

館山市, 日本

Right now

Conditions at 4:00 AM Japan Standard Time.

Good

Overhead (2.4 m) at 8 s, heading toward NW, with strong cross-offshore wind toward SSW.

Swell

2.4 m

8 s

Wind

24 km/h

SSW

Cross-offshore

Tide

0.8 m

Falling

Weather

24 °C

Light rain

27 °C water

7-day forecast

Wave height and the best conditions expected each day.

Hourly forecast

Sunday, September 20, 2026

Time	Rating	Swell	Swell direction	Wind	Wind direction	Tide	Weather
12 AM	Good	2.2 m · 9 s	NW	20 km/h · 41 km/h gusts	SSW Offshore	1.2 m	Rain · 24 °C
1 AM	Good	2.2 m · 9 s	NW	22 km/h · 41 km/h gusts	SSW Offshore	1.1 m	Light rain · 23 °C
2 AM	Good	2.3 m · 8 s	NW	19 km/h · 40 km/h gusts	SW Offshore	1 m	Drizzle · 24 °C
3 AM	Fair	2.4 m · 8 s	NW	23 km/h · 39 km/h gusts	SSW Cross-shore	0.9 m	Light rain · 23 °C
4 AM	Good	2.4 m · 8 s	NW	24 km/h · 39 km/h gusts	SSW Offshore	0.8 m	Light rain · 24 °C
5 AM	Good	2.4 m · 8 s	NW	24 km/h · 40 km/h gusts	SSW Offshore	0.8 m	Light rain · 24 °C
6 AM	Fair	2.4 m · 8 s	NW	26 km/h · 38 km/h gusts	SSW Cross-shore	0.9 m	Heavy drizzle · 24 °C
7 AM	Fair	2.4 m · 8 s	NW	27 km/h · 38 km/h gusts	SSW Offshore	0.9 m	Heavy drizzle · 24 °C
8 AM	Fair	2.5 m · 8 s	NW	29 km/h · 41 km/h gusts	SSW Cross-shore	1 m	Light rain · 24 °C
9 AM	Fair	2.5 m · 8 s	NW	29 km/h · 41 km/h gusts	SSW Cross-shore	1.1 m	Rain · 24 °C
10 AM	Fair	2.5 m · 8 s	NW	27 km/h · 43 km/h gusts	SSW Cross-shore	1.2 m	Rain · 24 °C
11 AM	Good	2.6 m · 8 s	NW	24 km/h · 47 km/h gusts	SSW Offshore	1.3 m	Rain · 25 °C
12 PM	Good	2.6 m · 8 s	NW	22 km/h · 51 km/h gusts	SW Offshore	1.4 m	Rain · 25 °C
1 PM	Fair	2.6 m · 8 s	NW	26 km/h · 54 km/h gusts	SW Offshore	1.4 m	Rain · 25 °C
2 PM	Fair	2.7 m · 8 s	NW	27 km/h · 57 km/h gusts	SW Offshore	1.5 m	Light rain · 25 °C
3 PM	Good	2.7 m · 8 s	NW	22 km/h · 54 km/h gusts	WSW Offshore	1.5 m	Rain · 25 °C
4 PM	Fair	2.7 m · 8 s	NW	26 km/h · 51 km/h gusts	SW Offshore	1.5 m	Heavy rain · 25 °C
5 PM	Good	2.7 m · 8 s	NW	24 km/h · 49 km/h gusts	SW Offshore	1.5 m	Heavy rain · 25 °C
6 PM	Fair	2.7 m · 8 s	NW	26 km/h · 52 km/h gusts	SW Offshore	1.5 m	Rain · 25 °C
7 PM	Fair	2.7 m · 8 s	NW	26 km/h · 52 km/h gusts	SW Offshore	1.5 m	Light rain · 25 °C
8 PM	Fair	2.8 m · 8 s	NW	25 km/h · 50 km/h gusts	SW Offshore	1.5 m	Rain · 25 °C
9 PM	Good	2.8 m · 8 s	NW	24 km/h · 50 km/h gusts	SW Offshore	1.5 m	Rain · 26 °C
10 PM	Good	2.8 m · 8 s	NW	22 km/h · 50 km/h gusts	SW Offshore	1.5 m	Rain · 25 °C
11 PM	Good	2.8 m · 8 s	NW	24 km/h · 53 km/h gusts	SSW Offshore	1.4 m	Heavy rain · 25 °C