Choshi 48 hour detailed Surf Forecast

Lat Long: 35.71° N 140.80° E

Issued: 2 am 19 Sep 2026 (local time)

Forecast update in hr min

Today's Choshi sea temperature is

23.1°C

Choshi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Choshi today (19 Sep):

Morning surf: Morning surf (19 Sep, local time) - 7.5ft (2.3m), 15s period with SE swell.
Afternoon surf: Afternoon surf (19 Sep, local time) - 7ft (2.2m), 14s period with SE swell.
Evening surf: Evening surf (19 Sep, local time) - 8ft (2.5m), 13s period with ESE swell.

The current surf forecast for Choshi at 11AM is: 2.3m 15s primary swell from a Southeast direction and 0.8m 10s secondary swell from a East direction, 1.6m 8s secondary swell from a East-northeast direction (forecast issued at 02:00am September 19). The wind direction is predicted to be cross-offshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (19 Sep)	7.5ft (2.3m)	15s
Afternoon (19 Sep)	7ft (2.2m)	14s
Evening (19 Sep)	8ft (2.5m)	13s

Table - waves today at Choshi. (Swell directed towards the surf break)

	Short Range Forecast Heavy rain (total 200mm), heaviest during Mon night. Warm (max 26°C on Mon morning, min 20°C on Sun morning). Winds increasing (light winds from the ESE on Mon morning, severe gales from the N by Mon night).
	Saturday 19								Sunday 20								Monday 21
	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM
Rating (10 max)	0	0	1	2	2	2	2	2	3	1	4	2	0	0	1	0	2	2	!	!	!	1	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SE 14	SE 13	SE 16	SE 15	SE 14	SE 14	ESE 13	ESE 13	ESE 12	ESE 12	SE 12	ESE 12	SE 11	SE 11	SE 11	SE 11	ESE 11	SE 12	SSE 12	SSE 13	SE 13	SSE 13	SSE 13	SSE 14
Wave Graph
kJ	416	642	2160	2238	2090	1719	2146	1944	1640	1426	1299	1174	927	821	659	716	1333	1313	3004	6067	2636	1974	2254	3709
Wind (km/h)	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	E	N	NNE	NE	NE	NE	ENE	NE	ENE	ESE	ESE	ESE	E	NE	NE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-on	cross-off	cross-off	cross	cross	cross	cross-on	cross	cross	cross-on	cross-on	cross-on	cross-on	cross	cross
High Tide								7:11PM1.33m								7:53PM1.25m						3:00PM1.24m
Low Tide		2:50AM0.53m									4:17AM0.58m									6:09AM0.58m				7:22PM1.16m


	—	5:20	—	—	—	—	—	—	—	5:22	—	—	—	—	—	—	—	5:22	—	—	—	—	—	—
	—	—	—	—	—	5:38	—	—	—	—	—	—	—	5:37	—	—	—	—	—	—	—	5:36	—	—
mm	—	—	—	—	—	—	1	—	—	1	2	6	18	17	12	11	5	7	6	7	7	13	23	24
Temp °C	21	21	21	21	21	21	22	22	23	24	22	20	21	21	23	24	24	24	25	25	26	25	24	24
Feels °C	18	18	18	18	19	20	22	22	24	25	22	18	18	19	24	26	26	26	29	29	29	27	21	20
Swell 1 Height (m) Direction Period (s)	SE 14	SE 13	SE 16	SE 15	SE 14	SE 14	ESE 13	ESE 13	ESE 12	ESE 12	SE 12	ESE 12	SE 11	SE 11	SE 11	SE 11	ESE 11	SE 12	SSE 12	SE 13	SE 13	SSE 13	SSE 13	SSE 14
kJ	416	642	2160	2238	2090	1719	2146	1944	1640	1426	1299	1174	927	821	659	716	1333	1313	3004	2381	2636	1974	2254	3709
Swell 2 Height (m) Direction Period (s)	S 22	SE 18	E 10	E 10	E 10	E 10	E 10	E 10	NE 9	NE 9	NE 8	NE 8	E 10	E 13	E 12	E 12	E 12	E 11	E 11	E 11	E 10	ESE 10	ESE 9	ESE 9
kJ	9	206	32	98	125	127	125	125	174	29	98	72	88	31	75	47	46	191	149	82	78	335	270	276
Swell 3 Height (m) Direction Period (s)	SE 21	E 10	—	—	—	—	—	E 10	E 10	E 10	E 10	E 10	E 13	E 13	—	ENE 9	—	—	E 11	—	E 15	E 15	—	—
kJ	18	35	—	—	—	—	—	151	122	125	90	92	29	51	—	8	—	—	188	—	4	4	—	—
Wind waves Height (m) Direction Period (s)	NE 8	NE 7	NE 7	ENE 7	ENE 9	ENE 9	NE 8	NE 9	NE 9	—	NE 9	—	NE 4	NE 5	ENE 6	ENE 7	—	NE 5	SE 12	SSE 13	—	NNE 5	NE 6	NE 7
kJ	368	331	301	266	364	318	28	221	91	—	38	—	26	59	195	214	—	83	2055	6067	—	72	202	393
Nearest Offshore or Glassy	Gomoda Shikoku	Akabane Long Beach Shizuoka	Omaezaki Shizuoka	Nunoshima Shikoku	Dragons Leaf Kyu Shu	Uchiboso Chiba	Uchiboso Chiba	Uchiboso Chiba	Uchiboso Chiba	Uchiboso Chiba	Choshi Chiba	Yasuda Rivermouth Shikoku	Yasuda Rivermouth Shikoku	Yasuda Rivermouth Shikoku	Yasuda Rivermouth Shikoku	Yasuda Rivermouth Shikoku	Uchizuma Shikoku	Uchizuma Shikoku	Mera Chiba	Mera Chiba	Uchizuma Shikoku	Dead Man's Land Shikoku	Suruga Bay Shizuoka	Shimoda Yamatoken (Tatado Hama) Shizuoka
Rating (10 max)	1	4	4	4	4	4	4	4	3	3	4	5	5	5	5	5	4	4	6	7	4	4	5	4
Distance (km)	591	350	266	609	877	117	117	117	117	117	0	674	674	674	674	674	631	631	125	125	631	631	257	206
Best forecast wave conditions in Chiba						Uchiboso	Uchiboso	Uchiboso	Uchiboso	Uchiboso	Katagai								Mera	Mera
Rating (10 max)						4	4	4	3	3	4								6	7
Best forecast wave conditions in Japan	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Unnamed Kyu Shu	Nunoshima Shikoku	Kaifu Rivermouth Shikoku	Kaifu Rivermouth Shikoku	Kaifu Rivermouth Shikoku	Shichirigahama Kanagawa	Katagai Chiba	Cape Toi Kyu Shu	Nagata Kyu Shu	Nagata Kyu Shu	Nagata Kyu Shu	Cape Toi Kyu Shu	Cape Toi Kyu Shu	Cape Toi Kyu Shu	Mera Chiba	Mera Chiba	Osaki Point Shikoku	Kaifu Rivermouth Shikoku	Suruga Bay Shizuoka	Niyodo Rivermouth Shikoku
Rating (10 max)	4	4	4	5	5	4	5	5	5	3	4	6	5	5	6	6	5	5	6	7	5	4	5	4
Header Global	Playa Aguilera Spain	El Huerto Spain	El Huerto Spain	Cathedral Rock Australia	Shingles New Zealand	Fairhaven Australia	Kaifu Rivermouth Japan	Trial Harbour Australia	Trial Harbour Australia	Easter Reef Australia	Asu Indonesia	Asu Indonesia	Noises Australia	Ahijedero Mexico	Papatowai New Zealand	Papatowai New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwreck Bay-Supertubes New Zealand	Shipwreck Bay-Supertubes New Zealand	Cyclops Australia	Shipwrecks Bay-Peaks New Zealand	Shipwrecks Bay-Peaks New Zealand	Papatowai New Zealand
Rating (10 max)	5	5	5	5	5	5	5	8	8	5	4	4	5	4	9	9	8	8	8	7	5	5	5	8

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

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Choshi 48 hour detailed Surf Forecast

How big are the waves at Choshi today (19 Sep):

Short Range Forecast

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