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

12 Day Weather and Surf, issued 8 pm Friday 31 Oct 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 23.2° C
(Which is 1.2°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Choshi this week:

The surf forecast for Choshi over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Nov 01) at 6AM. The primary swell is predicted to be 3.5m and 10s period with a secondary swell of 2.3m and 11s. Another secondary swell of 1.6m and 9s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Choshi in the next 12 days are 3.5m 10s and forecast to arrive on Saturday (Nov 01) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Friday (Nov 07) at 12AM.

Wave Type	Time (JST) & Date	Wave Height & Period
Next good surf (1 star+)	6AM (Sat 1st Nov)	11ft (3.5m) 10s
Best Surf	6AM (Sat 1st Nov)	11ft (3.5m) 10s
Most Powerful	6AM (Sat 1st Nov)	11ft (3.5m) 10s

Table - best surf conditions forecast for Choshi over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Heavy rain (total 33mm), heaviest during Fri night. Warm (max 22°C on Fri night, min 15°C on Mon afternoon). Winds decreasing (near gales from the SSW on Fri night, calm by Sun morning).										Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Wed night. Very mild (max 19°C on Wed night, min 13°C on Mon night). Winds decreasing (fresh winds from the N on Mon night, light winds from the ENE by Tue night).
		Saturday 01			Sunday 02			Monday 03			Tuesday 04			Wednesday 05			Thursday 06			Fri 07
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	0	3	3	1	2	0	0	1	0	0	0	0	0	0	0	0	1	0	0	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	SE	ESE	ESE	ESE	E	E	E	E	E	E	ESE	ESE	ESE	ESE	NE	E	ESE	ESE	ESE	ENE	E
Period(s) (?)	10	11	10	10	11	11	11	10	10	10	10	10	9	10	5	7	8	11	12	9	11
Wave Graph (?)
kJ (?)	1985	875	648	331	284	191	110	74	71	49	32	32	29	31	80	220	376	161	293	761	1201
Wind (km/h)	SSW	WNW	WNW	SW	NW	SW	WSW	NW	NNW	N	NNE	NE	ENE	NE	NE	NE	ENE	NE	NNE	NE	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- off	cross- off	cross	glass	cross	cross- off	off	off	cross- off	cross- off	cross	cross	cross	cross	cross	cross	cross	cross- off	cross	cross
High Tide / height (m)	10:54PM 1.15		1:28PM 1.29	12:48AM 1.21		1:48PM 1.34	2:02AM 1.30		2:10PM 1.39		3:02AM 1.38	2:32PM 1.45		3:56AM 1.44	2:56PM 1.51		4:48AM 1.45	3:23PM 1.55		5:40AM 1.44	3:51PM 1.57
Low Tide / height (m)		6:13AM 0.57		7:18PM 0.83	7:13AM 0.60		7:58PM 0.62	8:01AM 0.65		8:37PM 0.40	8:44AM 0.73		9:15PM 0.21	9:22AM 0.82		9:54PM 0.05	9:59AM 0.92		10:34PM -0.04	10:33AM 1.01

		Saturday 01			Sunday 02			Monday 03			Tuesday 04			Wednesday 05			Thursday 06			Fri 07
Sunrise	-	5:56	-	-	5:58	-	-	5:58	-	-	6:00	-	-	6:01	-	-	6:01	-	-	6:03	-
Sunset	-	-	4:42	-	-	4:40	-	-	4:39	-	-	4:38	-	-	4:37	-	-	4:37	-	-	4:36

Rain (mm)	33	-	-	-	-	-	-	-	-	-	-	-	-	-	-	4	-	-	-	-	-
Temp. °C	22	20	21	20	19	20	18	18	17	14	14	15	15	16	16	19	19	19	18	18	18
Feels °C (?)	15	16	18	18	17	16	11	9	9	7	7	11	12	12	11	16	14	15	13	10	12

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

Quick surf report for Choshi:

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Information about the Choshi Surf forecast

The above surf forecast table for Choshi provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Choshi can be found by selecting the local surf guide option on the grey menu. Our Choshi surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Choshi) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Choshi may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Choshi is 4 km (2 miles) from Hasaki. If you plan a holiday in Chiba, look for hotels and other accommodation in Hasaki. Hasaki has rooms for a wide range of budgets as well as car hire and transport links.