Big Ben Surf Forecast

/ Chiba (19 surf breaks) /

Japan (129 surf breaks) / Lat Long: (35.12° N 140.12° E)

Surf Forecasts:

Big Ben surfForecast / Chiba / Japan

12 Day Weather and Surf, issued 8 pm Wednesday 12 Nov 2025 JST

Forecast update in hr min s Forecast update imminent

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

Today's Big Ben sea temperature is 20.9° C
(Which is slightly cooler than normal)

Best Forecast Surf Conditions for Big Ben this week:

The surf forecast for Big Ben over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Nov 13) at 12PM. The primary swell is predicted to be 1.2m and 5s period with a secondary swell of 0.9m and 5s. Another secondary swell of 0.4m and 11s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Big Ben in the next 12 days are 2.2m 7s and forecast to arrive on Monday (Nov 17) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Tuesday (Nov 18) at 9PM.

Wave Type	Time (JST) & Date	Wave Height & Period
Next good surf (1 star+)	12PM (Thu 13th Nov)	4ft (1.2m) 5s
Best Surf	12PM (Tue 18th Nov)	5ft (1.6m) 6s
Most Powerful	6PM (Mon 17th Nov)	7ft (2.2m) 7s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 2mm), mostly falling on Wed night. Very mild (max 17°C on Thu morning, min 12°C on Thu night). Wind will be generally light.										Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Mon morning. Warm (max 20°C on Mon morning, min 13°C on Tue morning). Winds increasing (light winds from the NE on Sat night, strong winds from the SW by Mon night).
		Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18			Wed 19
	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	0	1	1	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 (?)	SSW	SSW	SSE	SW	ESE	ENE	ENE	NE	NE	ESE	ESE	ESE	ESE	SSE	S	SW	S	NE	SW	NE	SE
Period(s) (?)	12	11	5	10	9	6	5	5	6	7	7	7	8	5	7	7	7	8	9	7	9
Wave Graph (?)
kJ (?)	78	46	40	25	16	64	29	55	46	70	65	35	53	117	413	226	36	110	268	64	53
Wind (km/h)	S	SW	WNW	N	NNE	ENE	NE	NNE	ENE	ENE	NE	E	S	SSE	SW	WSW	WNW	WSW	N	SSE	S
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross	cross- off	cross- off	cross- off	cross	cross	cross- off	cross	cross	cross	cross- on	cross- on	on	cross	cross- off	off	cross- off	cross- off	cross- on	cross- on
High Tide / height (m)		11:58AM 1.29		9:30PM 1.11		12:43PM 1.32	12:05AM 1.11		1:17PM 1.35	1:37AM 1.20		1:45PM 1.38	2:39AM 1.30		2:12PM 1.42		3:30AM 1.39	2:38PM 1.46		4:15AM 1.45	3:05PM 1.50
Low Tide / height (m)		3:43AM 0.49	5:57PM 1.06		5:07AM 0.58		7:04PM 0.89	6:25AM 0.65		7:44PM 0.71	7:28AM 0.70		8:20PM 0.54	8:17AM 0.74		8:54PM 0.37	8:59AM 0.80		9:28PM 0.22	9:36AM 0.86

		Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18			Wed 19
Sunrise	-	6:11	-	-	6:11	-	-	6:13	-	-	6:13	-	-	6:15	-	-	6:16	-	-	6:16	-
Sunset	-	-	4:35	-	-	4:35	-	-	4:34	-	-	4:32	-	-	4:32	-	-	4:31	-	-	4:30

Rain (mm)	1	1	-	-	-	-	-	-	-	-	-	-	2	8	-	-	-	-	-	-	-
Temp. °C	16	17	15	14	17	16	16	15	15	15	16	16	18	20	19	18	14	14	9	12	13
Feels °C (?)	14	16	14	12	14	13	13	11	12	13	14	14	17	16	15	11	10	9	0	7	10

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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Information about the Big Ben Surf forecast

The above surf forecast table for Big Ben provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Big Ben can be found by selecting the local surf guide option on the grey menu. Our Big Ben 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 (Big Ben) 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 Big Ben 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.

Big Ben is 3 km (2 miles) from Kawaguchi. If you plan a holiday in Chiba, look for hotels and other accommodation in Kawaguchi. Kawaguchi has rooms for a wide range of budgets as well as car hire and transport links.