Surf spot

Katagai

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

Country: Japan, Kanagawa Chiba
Coordinates: 35.5334, 140.4612

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)	0.6	0.6	0.5	0.5	0.5	0.5	0.7	0.6	0.7	0.7	0.7	0.7	0.7	0.6	0.6	0.8	0.8	0.8	0.8	0.9	0.7	0.7	0.8	1	0.9	1	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.8	0.8	0.8	0.8	0.7	0.7	0.7	0.6	0.6	0.6	0.7	0.7	1	1.2	1.3	1.3	1.3	1.2	0.9	0.8	1	1.7
Wave direction	ESE	ESE	ESE	ESE	E	E	ESE	SE	ESE	ESE	ESE	ESE	ESE	E	E	ESE	ESE	ESE	ESE	ESE	E	ESE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	E	E	E	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	SE	SE
Wave period (s)	8.9	10.1	9.6	8.9	11.2	11.1	9.3	7.8	8.8	8.7	8.7	9.4	9.6	10.8	10.6	9	8.7	6.2	5.9	7.1	8.4	7.9	6.8	6	5.8	5.8	5.8	6	6.1	6	5.7	5.7	5.5	5.4	5.5	5.5	5.5	5.6	5.8	6	8.1	8.3	8.3	5.9	5.6	5.7	6.8	6.8	6.7	6.8	6.6	6.5	6.2	7.3	11.3	8.7
Wave energy (kJ)	50	63	53	47	67	66	81	41	67	70	73	93	96	78	75	99	101	48	49	75	69	54	56	70	58	63	60	60	63	62	53	53	48	47	42	39	41	38	35	37	56	56	52	29	31	28	92	123	152	154	138	114	62	71	266	427
Wind speed (km/h)	11.6	11.9	11.4	14.6	15	12	15.8	14.9	13	11.5	9.5	10.4	5.4	10.4	10.2	8.5	9.8	8.5	11.3	20.6	27.7	27.8	20.3	17.2	19.7	10	5.5	6	15.8	15	10.4	0.8	2.9	4.7	12.1	14.6	15.8	18.8	18.4	14.5	13.5	14.6	17.6	19.8	23.1	26.3	23.8	25.4	25.3	26.6	28.5	27.7	27.1	27.6	23.1	19.5
Wind direction	NNECross-off	NOffshore	NNECross-off	NNECross-off	NCross-off	NNECross-off	NNECross-off	NNECross-off	NOffshore	NOffshore	NOffshore	NOffshore	NNECross-off	ESECross-on	ESECross-on	SSEOnshore	SSWCross-on	SSWCross-on	SSWCross-on	SSWCross-on	SOnshore	SOnshore	SSWCross-on	SCross-on	SSWCross-on	SWCross-on	WCross	WNWCross-off	SEOnshore	SSEOnshore	SWCross-on	NNEGlassy	NGlassy	NGlassy	NNECross-off	NECross-off	NECross-off	NECross	NECross-off	NECross-off	NECross-off	NCross-off	NNECross-off	NECross-off	NECross-off	NECross-off	NECross-off	NECross-off	NNECross-off	NNECross-off	NNECross-off	NNECross-off	NNECross-off	NNECross-off	NNECross-off	NNECross-off

Katagai is a well-known surf spot in Chiba Prefecture, Japan, on the Pacific coast of the Bōsō Peninsula. It’s often grouped with the wider Katagai / Kujūkuri area, which is famous for its long, open beaches and consistent exposure to swell.

A few quick notes:

Location: Chiba, Japan — not Kanagawa.
Kanagawa and Chiba are different prefectures.
Katagai is generally associated with Chiba, especially the Kujūkuri coast area.

Surf character

Beach break: Katagai is typically a sandy beach break, so conditions can change with sandbars.
Wave quality: Can offer fun, rideable waves, especially when swell lines up nicely.
Best for: Beginners to intermediate surfers on smaller days, but it can also hold more power when larger swell arrives.
Consistency: The Chiba coast is known for getting more reliable swell than many areas closer to Tokyo Bay because it faces the Pacific directly.

Conditions

Swells: Best with east to southeast Pacific swell, depending on the sandbar setup.
Wind: Offshore winds often come from the west or northwest, while strong onshore winds can quickly make it choppy.
Crowds: Can get busy, especially on weekends and when conditions are good.

Area vibe

Katagai has a classic Japanese beach-town surf feel, with a mix of local surfers, seasonal visitors, and beachgoers. The broader Chiba surf scene is popular because it’s relatively accessible from Tokyo and has a long stretch of coast with many surfable breaks.