Choshi Surf Forecast

/ Chiba (19 surf breaks) /

Japan (129 surf breaks) / Lat Long: (35.71° N 140.80° E)

Surf Forecasts:

Choshi surfForecast / Chiba / Japan

48hr Weather and Surf, issued 2 am Friday 19 Sep 2025 JST

Forecast update in hr min s Forecast update imminent

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

Today's Choshi sea temperature is 26.1° C
(Which is slightly warmer than usual)

How big are the waves at Choshi today?

The current surf forecast for Choshi at 4AM is: 1.4m 6s primary swell from a East-northeast direction and 0.3m 10s secondary swell from a East-southeast direction, 0.2m 6s secondary swell from a South direction (forecast issued at 02:00am September 19). The wind direction is predicted to be cross-shore.

Time (JST) & Date	Wave Height	Wave Period
Morning (19 Sep)	3.5ft (1.1m)	6s
Afternoon (19 Sep)	3.5ft (1.1m)	6s
Evening (19 Sep)	3.5ft (1.1m)	6s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Friday 19								Saturday 20								Sunday 21
	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ESE	ESE	E	E	E	E	ESE	E	E	E	E	E	E	E
Period(s) (?)	5	6	6	6	6	6	6	6	6	6	9	9	5	7	7	8	8	8	8	8	8	12	8	8
Wave Graph (?)
kJ (?)	87	128	111	82	87	90	96	93	71	47	29	29	13	78	127	172	229	161	130	105	82	280	64	64
Wind (km/h)	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	E	ESE	SSE	S	S	SSW	SW	SW	NW	NE	NE	NE	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross	cross	cross- off	off	cross	cross	cross	cross
High Tide / height (m)		1:32AM 1.31					3:39PM 1.34			2:31AM 1.39					3:51PM 1.37				3:18AM 1.44				4:06PM 1.41
Low Tide / height (m)				8:36AM 0.36					9:02PM 0.89				9:13AM 0.37				9:31PM 0.75				9:44AM 0.42

	Friday 19								Saturday 20								Sunday 21
Sunrise	-	-	5:20	-	-	-	-	-	-	-	5:22	-	-	-	-	-	-	-	5:22	-	-	-	-	-
Sunset	-	-	-	-	-	5:38	-	-	-	-	-	-	-	5:37	-	-	-	-	-	-	-	5:36	-	-

Rain (mm)	2	20	9	2	1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	24	21	20	21	22	23	23	23	23	23	23	24	25	26	25	26	26	26	26	27	26	26	24	23
Feels °C (?)	22	19	16	19	21	21	21	21	21	22	22	24	26	27	26	26	25	24	25	29	25	23	19	19

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

Recent Eyeball Surf Reports for Chiba

Wind Update Still cross-shore at Choshi (moderate winds from the NE at Choshi 6 km from Choshi). 0.4m 6s windswell from the S with a 0.3m 10s swell from the SE and a 0.1m 13s groundswell, also from the SE. 3 swells combining to make bigger set waves.
1 hour 42 minutes ago Choshi

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1 h 42 min ago

26 km/h

Cross-Shore

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