Big Ben surfForecast / Chiba / Japan

information circle12 Day Weather and Surf, issued 2 pm Monday 29 Dec 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
18.9° C
(Which is slightly warmer than usual)


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 Tuesday (Dec 30) at 6PM. The primary swell is predicted to be 0.4m and 14s period with a secondary swell of 0.3m and 11s. 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 2.4m 9s and forecast to arrive on Saturday (Jan 03) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Sunday (Jan 04) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Tue 30th Dec)1.5ft (0.4m) 14s
Best Surf12PM (Thu 1st Jan)6ft (1.8m) 8s
Most Powerful12AM (Sat 3rd Jan)8ft (2.4m) 9s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 15°C on Tue afternoon, min 7°C on Wed night). Winds decreasing (fresh winds from the WSW on Mon night, calm by Wed afternoon).

Days 3-6 Weather Summary Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Fri night. Very mild (max 10°C on Sun morning, min 2°C on Fri night). Winds increasing (calm on Sat night, fresh winds from the WSW by Sun morning).

Mon
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
1
1
1
1
2
3
1
1
1
2
2
2
1
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
ENE
0.5
E
0.4
NE
0.4
NE
0.4
ENE
0.9
SW
1.1
SW
0.8
SW
1.9
NE
1.8
NE
0.9
ENE
0.8
ENE
0.7
NE
2.4
NE
1.6
ENE
1.3
ENE
1.2
ENE
2.5
SW
0.5
ENE
0.4
NE
0.2
ENE
Period(s) (?)12121615147788812121291111118101010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)115726455738612179424383233190149841550419353735622710
Wind
(km/h)
20
WSW
30
WSW
20
W
20
W
10
NW
10
NNW
0
ENE
15
N
15
NNE
10
NNE
15
N
20
NNE
20
NNE
25
N
20
N
20
NW
5
SSW
20
SW
40
SW
40
WSW
30
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
glasscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcrosscrosscross-
off
cross-
off
cross-
off
High Tide
/ height (m)
1:59AM
1.08
12:07PM
1.31
3:19AM
1.18
12:55PM
1.33
4:13AM
1.27
1:42PM
1.37
4:57AM
1.34
2:31PM
1.40
5:32AM
1.39
3:17PM
1.43
6:04AM
1.41
4:03PM
1.45
6:34AM
1.42
Low Tide
/ height (m)
6:51PM
0.46
6:13AM
0.94
7:48PM
0.31
7:34AM
1.02
8:38PM
0.18
8:34AM
1.05
9:23PM
0.07
9:35AM
1.05
10:05PM
-0.01
10:20AM
1.03
10:44PM
-0.06
10:59AM
0.99
11:21PM
-0.06
11:37AM
0.93
Mon
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Sunrise--6:47--6:47--6:47--6:47--6:48--6:48--6:48
Sunset4:35--4:36--4:36--4:37--4:37--4:38--4:39--
clear
clear
part cloud
clear
clear
clear
cloud
cloud
part cloud
part cloud
light rain
part cloud
rain showers
light snow
part cloud
clear
clear
clear
part cloud
part cloud
cloud
Rain (mm)
----------2-13-------
Temp. °C131314151211121088866568810111111
Feels °C (?)86810881064551120241113
  • 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.

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