Surf spot

Onjuku

Forecast conditions and map view for Onjuku in Japan, Kanagawa Chiba. Open the interactive surf map to inspect wind, waves, and nearby spots.

Country: Japan, Kanagawa Chiba
Coordinates: 35.1867, 140.3500

Metric
Metric	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00
Wave height (m)	0.8	0.9	0.9	0.9	0.9	0.9	0.9	1	0.9	0.9	1	1	0.8	1	1.1	1.2	1.2	1.2	1.2	1.1	1.1	1.1	1.2	1.1	1	1.1	1	1	0.9	0.8	0.7	0.7	0.7	0.7	0.8	1.1	1.2	1.2	1.4	1.4	1.5	1.4	1.3	1.3	1.2	1.4	1.9	2.6	2.8	2.9	2.8	2.8	2.8	2.7	2.6	2.5
Wave direction	SE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	SE	E	ESE	SE	E	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	E	NE	ENE	ENE	E	E	ENE	ENE	ENE	ENE	ENE	ENE	E	E	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE
Wave period (s)	8.3	8.6	8.6	8.3	8.4	8	7.5	7.7	6.5	8.4	7.3	6	8.5	6.2	6.4	6.3	6.3	6.2	6	6.3	6.1	6.2	5.7	5.8	5.7	5.7	5.8	5.8	5.8	6.5	7.6	9.7	6.7	6.6	6.5	7.8	7.2	7.3	7.3	7.3	7	7	6.8	6.7	8	12.2	11.2	9.6	9.2	8.9	8.4	8.6	8.3	8.2	8	7.8
Wave energy (kJ)	92	109	108	112	109	99	99	112	74	109	112	69	102	79	106	105	105	107	97	98	93	95	87	84	66	72	72	66	55	54	63	86	39	43	57	137	140	162	206	200	232	198	159	156	197	595	925	1252	1313	1351	1122	1179	1062	940	879	785
Wind speed (km/h)	17.1	11.9	11.2	13.8	8.7	6.8	6	7.2	10.7	16.3	16.2	19.5	23.8	23.6	22.5	25.1	22.2	25.3	16.8	15.2	21.6	17.7	7.9	4.7	16.2	16.1	21.8	22	21.1	23	19.9	20	18.4	19.2	27.1	30.1	30.6	31.4	34	34.3	31.7	33.7	34.8	37	40.8	40.6	37.6	33.5	31.8	30.7	29.5	27.1	22.9	18.3	20.2	18.2
Wind direction	NOffshore	NOffshore	NOffshore	NNEOffshore	ENECross	ESECross-on	SSEOnshore	SOnshore	SSWOnshore	SOnshore	SSWCross-on	SSWCross-on	SSWCross-on	SSWCross-on	SSWCross-on	SSWCross-on	SWCross-on	SSWCross-on	SWCross-on	SSWCross-on	SSWCross-on	SSWCross-on	SWCross-on	NGlassy	NECross-off	NNECross-off	NNECross-off	NNECross-off	NNECross-off	NECross-off	NECross-off	NNECross-off	NNEOffshore	NNEOffshore	NECross-off	NECross-off	NNECross-off	NNEOffshore	NNEOffshore	NNECross-off	NNEOffshore	NNEOffshore	NNEOffshore	NNEBlown out	NNEBlown out	NNEBlown out	NNEBlown out	NNEOffshore	NNEOffshore	NNEOffshore	NNEOffshore	NNEOffshore	NECross-off	ENECross-off	NECross-off	ECross

Onjuku is a mellow, beach-break surf spot on the Pacific coast of Japan, in Chiba Prefecture rather than Kanagawa. It’s known for being one of the more beginner-friendly and consistently surfable areas on the east coast of Honshu.

Quick description

Type of wave: Mostly sandbar beach breaks
Best for: Beginners to intermediate surfers, longboarders, and surfers looking for easy-access waves
Wave character: Usually soft, playful, and relatively forgiving, though it can get punchier on larger swell
Consistency: Fairly reliable compared with many other Japanese spots, especially when East/Northeast swell lines up

Conditions

Swells: Responds well to Pacific typhoon swells and seasonal east swells
Wind: Offshore conditions are often best with westerly winds
Tide: Can work across a range of tides depending on sandbars, but conditions change with shifting bottom contours
Crowds: Can get busy, especially on weekends and during good swell windows

Environment

Beach setting: Wide sandy beach with a relaxed coastal town vibe
Atmosphere: More laid-back than some of the more famous surf zones near Tokyo
Water temperature: Varies by season; a wetsuit is needed much of the year, especially in winter

Why surfers like it

Easy access
Beginner-friendly waves
Good for longboarding and funboard sessions
Less intimidating than heavier reef or point breaks