Choshi 48 hour detailed Surf Forecast

Lat Long: 35.71° N 140.80° E

Issued: 2 am 05 Oct 2026 (local time)

Forecast update in hr min

Today's Choshi sea temperature is

22.8°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 (05 Oct):

Morning surf: Morning surf (05 Oct, local time) - 4.5ft (1.4m), 16s period with SE swell.
Afternoon surf: Afternoon surf (05 Oct, local time) - 4.5ft (1.4m), 15s period with SE swell.
Evening surf: Evening surf (05 Oct, local time) - 8ft (2.5m), 17s period with SE swell.

The current surf forecast for Choshi at 6AM is: 1.2m 16s primary swell from a Southeast direction and 1.4m 9s secondary swell from a East-southeast direction (forecast issued at 02:00am October 05). The wind direction is predicted to be cross-offshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (05 Oct)	4.5ft (1.4m)	16s
Afternoon (05 Oct)	4.5ft (1.4m)	15s
Evening (05 Oct)	8ft (2.5m)	17s

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

	Short Range Forecast Light rain (total 2mm), mostly falling on Mon morning. Warm (max 23°C on Tue morning, min 19°C on Wed night). Winds increasing (light winds from the N on Mon night, strong winds from the NNE by Tue afternoon).
	Monday 5								Tuesday 6								Wednesday 7
	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)	1	2	3	2	3	2	3	4	!	!	!	!	!	!	!	!	!	!	!	!	!	!	1	2
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SE 16	SE 17	SE 16	SE 16	SE 15	SE 15	SE 18	SE 17	SE 17	SE 17	SE 17	SE 17	SE 18	SE 18	ESE 18	ESE 18	ESE 18	ESE 18	ESE 17	E 16	ESE 15	E 14	E 13	E 13
Wave Graph
kJ	274	594	748	883	993	860	2808	3770	5176	6221	7947	8483	8947	9326	10303	10294	9633	9302	8691	4966	4610	3341	2542	1922
Wind (km/h)	ENE	NE	NNE	NNE	NNE	N	N	N	N	N	N	N	NNE	NNE	NNE	NNE	NNE	N	N	NNW	NNE	ENE	NE	NE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-on	cross	cross
High Tide						2:31PM1.26m			9:31PM1.21m					2:29PM1.29m				00:37AM1.23m				2:41PM1.32m
Low Tide			5:04AM0.44m					7:15PM1.20m				6:34AM0.45m				7:49PM1.03m				7:37AM0.46m				8:21PM0.85m


	—	5:33	—	—	—	—	—	—	—	5:33	—	—	—	—	—	—	—	5:35	—	—	—	—	—	—
	—	—	—	—	—	5:15	—	—	—	—	—	—	—	5:14	—	—	—	—	—	—	—	5:13	—	—
mm	—	—	—	1	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	22	21	20	21	22	21	21	21	21	21	21	22	23	23	22	21	21	20	20	20	21	21	21	21
Feels °C	19	18	18	19	21	19	20	22	22	21	21	22	20	19	16	14	14	13	13	16	18	18	15	17
Swell 1 Height (m) Direction Period (s)	ESE 9	ESE 9	ESE 9	E 9	E 10	E 10	SE 18	SE 17	SE 17	SE 17	SE 17	SE 17	SE 18	SE 18	ESE 18	ESE 18	ESE 18	ESE 18	ESE 17	E 16	ESE 15	E 14	E 13	E 13
kJ	213	289	333	450	529	518	2808	3770	5176	6221	7947	8483	8947	9326	10303	10294	9633	9302	8691	4966	4610	3341	2542	1922
Swell 2 Height (m) Direction Period (s)	SE 16	SE 17	SE 16	SE 16	SE 15	SE 15	E 9	E 9	E 9	E 9	E 9	—	—	—	—	—	—	—	—	SE 15	NE 9	NE 10	NE 9	NE 9
kJ	274	594	748	883	993	860	471	416	357	229	311	—	—	—	—	—	—	—	—	2021	891	777	665	388
Swell 3 Height (m) Direction Period (s)	E 14	E 14	E 14	E 14	E 14	SE 20	E 13	E 13	E 13	E 13	E 13	—	—	—	—	—	—	—	—	—	—	SSE 13	SSE 13	ENE 10
kJ	153	153	153	100	96	634	85	31	31	114	117	—	—	—	—	—	—	—	—	—	—	118	215	69
Wind waves Height (m) Direction Period (s)	NE 4	—	—	—	NE 11	—	—	—	—	—	—	—	—	—	NE 7	NE 7	NNE 8	NNE 8	NE 9	NE 10	—	—	—	—
kJ	9	—	—	—	5	—	—	—	—	—	—	—	—	—	465	831	1028	970	1040	1171	—	—	—	—
Nearest Offshore or Glassy	Big Ben Chiba	Katagai Chiba	Omaezaki Shizuoka	Akabane Long Beach Shizuoka	Omaezaki Shizuoka	Sakawa River Kanagawa	Onjuku Chiba	Katagai Chiba	Katagai Chiba	Katagai Chiba	Katagai Chiba	Katagai Chiba	Kugenuma Rivermouth Kanagawa	Uchiboso Chiba	Usami Shizuoka	Asakawa Shikoku	Hanamizu River Kanagawa	Hanamizu River Kanagawa	Uchiboso Chiba	Malibu Chiba	Katagai Chiba	Shida Chiba	Tsujido Beach Kanagawa	Hayama Cliffs Kanagawa
Rating (10 max)	4	4	4	4	4	4	6	5	6	6	8	9	5	6	7	9	5	4	4	8	5	5	1	2
Distance (km)	90	37	266	350	266	159	71	37	37	37	37	37	128	117	174	632	147	147	117	76	37	56	132	121
Best forecast wave conditions in Chiba	Mera	Katagai					Onjuku	Katagai	Mera	Mera	Katagai	Katagai		Uchiboso					Mera	Mera	Matsube Bay	Mera
Rating (10 max)	4	4					6	5	9	9	8	9		6					9	8	6	5
Best forecast wave conditions in Japan	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Onjuku Chiba	Akabane Long Beach Shizuoka	Mera Chiba	Mera Chiba	Katagai Chiba	Katagai Chiba	Osaki Point Shikoku	Kaifu Rivermouth Shikoku	Usami Shizuoka	Okuragahama Kyu Shu	Usami Shizuoka	Usami Shizuoka	Mera Chiba	Mera Chiba	Matsube Bay Chiba	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku
Rating (10 max)	4	4	4	4	4	4	6	5	9	9	8	9	9	8	7	9	7	6	9	8	6	5	4	4
Header Global	Cyclops Australia	Easter Reef Australia	Easter Reef Australia	Puertecillo Chile	Teniente (Lieutenant) Chile	Boneyards South Africa	Boneyards South Africa	Easter Reef Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Barrancon Chile	Kaifu Rivermouth Japan	Barrancon Chile	Barrancon Chile	Trial Harbour Australia	Trial Harbour Australia	Easter Reef Australia	Trial Harbour Australia	Boneyards South Africa	Hell South Africa	Trial Harbour Australia	Trial Harbour Australia
Rating (10 max)	5	5	5	5	5	4	4	5	8	9	9	9	4	8	4	4	9	9	9	9	6	6	9	9

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

Latest Updates

Ben Mondy

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Choshi surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Choshi 48 hour detailed Surf Forecast

How big are the waves at Choshi today (05 Oct):

Short Range Forecast

Latest Updates

Surf-Forecast Now Has Webcams

Road Testing the new Db Surf Roller Pro

Summer's Short. Life Is Long.

Roadsurfing in the Basque country

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

FREE! Surf-Forecast.com widget for your website