Big Ben surfForecast / Chiba / Japan

information circle12 Day Weather and Surf, issued 2 pm Friday 09 Jan 2026 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
17.0° 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 Sunday (Jan 11) at 6AM. The primary swell is predicted to be 3.5m and 9s period with a secondary swell of 0.2m and 10s. Another secondary swell of 0.2m and 13s 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 3.5m 9s and forecast to arrive on Wednesday (Jan 14) 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 4.0m 10s period and expected on Sunday (Jan 11) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 11th Jan)11ft (3.5m) 9s
Best Surf 6AM (Sun 11th Jan)11ft (3.5m) 9s
Most Powerful12AM (Wed 14th Jan)11ft (3.5m) 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 Light rain (total 4mm), mostly falling on Sat night. Very mild (max 14°C on Sat afternoon, min 3°C on Sun night). Winds decreasing (near gales from the W on Sun morning, calm by Sun night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 13°C on Tue morning, min 4°C on Wed night). Winds decreasing (near gales from the WSW on Tue night, calm by Thu morning).

Fri
09
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
!
0
0
1
0
0
0
0
0
3
2
1
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.5
NE
0.2
E
0.3
E
1.7
SW
3
SW
3
SW
0.2
E
0.2
E
1.4
SW
0.9
SW
1.9
SW
2.5
SW
3
SW
3.5
SW
1.6
SW
1.2
SW
0.9
SW
0.4
ESE
0.4
ESE
2.5
SW
1.6
SW
Period(s) (?)81010689121210977891010910978
Wave
Graph
(?)Metric surfscale
Energy kJ (?)298182039931309121238814439670097918334792571203635696308
Wind
(km/h)
5
SE
10
SSW
30
SW
35
SW
45
SW
40
WSW
55
W
30
W
10
NE
10
S
30
WSW
35
SW
40
SW
50
WSW
15
N
10
NNW
10
NNE
10
NNE
10
SW
40
WSW
50
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on
crosscrosscrosscross-
off
cross-
off
cross-
off
crosscross-
on
cross-
off
crosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
High Tide
/ height (m)
7:58PM
1.19
8:55AM
1.32
9:05PM
1.08
9:27AM
1.30
10:41PM
1.00
10:03AM
1.28
1:07AM
1.00
10:50AM
1.28
3:12AM 11:50AM
1.10 1.28
4:08AM
1.21
12:57PM
1.30
4:43AM
1.29
Low Tide
/ height (m)
2:16AM
0.47
3:19PM
0.62
2:51AM
0.63
4:26PM
0.55
3:30AM
0.79
5:44PM
0.47
4:27AM
0.94
7:00PM
0.35
6:17AM
1.05
8:04PM
0.23
8:07AM
1.09
8:56PM
0.11
9:15AM
1.07
Fri
09
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Sunrise--6:48--6:48--6:48--6:47--6:47--6:47--6:47
Sunset4:44--4:45--4:45--4:46--4:47--4:49--4:49--
part cloud
part cloud
clear
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
cloud
rain showers
clear
Rain (mm)
----4--------------1-
Temp. °C81012141410647810131311896891313
Feels °C (?)463770-8-734255-13515665
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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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