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)	0.7	0.7	0.7	0.7	0.7	0.7	0.8	0.8	0.8	0.8	0.8	0.9	0.9	0.7	0.7	0.8	1	1	1.1	0.8	0.9	1.2	1.2	1.2	1.2	1.2	1.2	1.1	1	1.1	1.1	1.1	1	1.1	1	1	1	1	0.8	0.9	0.8	0.7	0.7	0.6	0.8	0.8	1	1.3	1.5	1.5	1.5	1.4	1.1	0.9	1.2	1.8
Wave direction	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	SE	ESE	ESE	ESE	ESE	SE	SE	ESE	ESE	ESE	ESE	SE	SE	ESE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	E	SE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	SE	SE	SE
Wave period (s)	10.9	10.8	10.6	10.2	10.1	9.6	8.8	8.2	8.4	8.5	8.3	8.7	8.7	7.1	7.8	9.3	6.9	7.7	7.1	6.2	6	7	6.8	6.5	6.5	6.3	6.2	6.2	5.9	6.1	6	6	5.7	5.5	5.6	5.5	5.5	5.5	5.8	5.8	7.9	7.3	6	6.9	5.8	5.8	6.8	6.9	6.8	6.8	6.7	6.6	6.8	12	11.3	10.1
Wave energy (kJ)	104	101	97	91	93	80	99	78	91	97	94	116	116	52	62	116	91	114	122	53	56	138	129	118	120	105	103	95	75	93	86	86	70	75	68	64	61	57	44	50	76	54	32	37	47	41	102	156	200	214	191	171	120	254	393	632
Wind speed (km/h)	16.3	17.4	16.5	18.3	19.6	18.5	17.8	20.1	16.6	11.9	10.5	10.5	3.2	7.4	6.5	9.5	9.6	14.2	14.5	20.3	22.3	24.1	21.7	19.7	24.8	13.2	10.8	6.1	13.7	16.6	10.9	10.5	9.9	6.2	7.3	10.5	20.2	20.6	21.2	19.9	18.2	19.4	23.3	25	28.5	30	29.6	30.7	31.9	33.7	35.1	34.8	34	36.2	30.8	23.7
Wind direction	NNECross-off	NNECross-off	NNECross-off	NNECross-off	NOffshore	NNEOffshore	NNEOffshore	NNEOffshore	NOffshore	NOffshore	NOffshore	NOffshore	EGlassy	SSEOnshore	SOnshore	SOnshore	SSWOnshore	SOnshore	SSWCross-on	SSWCross-on	SSWCross-on	SSWCross-on	SSWOnshore	SSWCross-on	SSWCross-on	WSWCross-on	SWCross-on	WSWCross-on	SSWOnshore	SSWCross-on	SWCross-on	SSWCross-on	WSWCross-on	WSWCross	NNWOffshore	NNECross-off	NECross-off	NECross-off	NECross-off	NNECross-off	NNECross-off	NNEOffshore	NNECross-off	NNECross-off	NNECross-off	NECross-off	NECross-off	NECross-off	NNECross-off	NNECross-off	NNEBlown out	NNECross-off	NNECross-off	NNEBlown out	NNECross-off	NNECross-off

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