Big Ben surfForecast / Chiba / Japan

information circle12 Day Weather and Surf, issued 8 pm Monday 22 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
19.8° 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 Wednesday (Dec 24) at 12AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.2m and 9s. Another secondary swell of 0.8m and 6s 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 Thursday (Dec 25) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 9s period and expected on Saturday (Dec 27) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Wed 24th Dec)2.5ft (0.7m) 8s
Best Surf 6PM (Wed 24th Dec)10ft (3.0m) 8s
Most Powerful12AM (Thu 25th Dec)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 Heavy rain (total 47mm), heaviest during Wed afternoon. Very mild (max 18°C on Thu morning, min 6°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Thu night, min 2°C on Fri night). Winds decreasing (strong winds from the WSW on Thu night, calm by Sat night).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Mon
29
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
1
0
1
1
0
!
3
2
3
1
1
2
1
2
2
2
2
2
1
0
Swell
Height Map
Wave Height (m) & direction (?)
1.7
ENE
0.9
SE
0.8
SE
0.7
SE
1
SE
1.9
SSE
3.5
S
2.5
S
2
S
2.3
SW
1.8
SW
1
E
1.1
ENE
0.9
ENE
0.9
ENE
0.8
ENE
0.8
ENE
0.7
ENE
0.7
ENE
0.7
ENE
0.7
ENE
Period(s) (?)9998569888914141413131313131212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)4391359168482952080898539601528383421326299239232178173155152
Wind
(km/h)
20
NNE
20
NE
15
ENE
10
NNE
10
NNE
25
SSE
10
NW
20
WSW
25
SW
20
WSW
40
NW
30
N
15
NNE
15
NNE
10
NNE
5
WNW
10
N
10
NNE
10
NNE
10
NNE
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
crosscross-
off
cross-
off
onoffcross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
glasscross-
off
cross-
off
cross-
off
cross-
off
cross
High Tide
/ height (m)
7:38AM
1.39
5:44PM
1.41
8:13AM
1.36
6:32PM
1.33
8:47AM
1.34
7:27PM
1.24
9:22AM
1.31
8:34PM
1.13
9:58AM
1.29
10:05PM
1.05
10:38AM
1.29
12:04AM
1.02
11:20AM
1.29
Low Tide
/ height (m)
12:22AM
0.01
12:39PM
0.97
1:00AM
0.10
1:25PM
0.93
1:39AM
0.22
2:18PM
0.87
2:19AM
0.37
3:19PM
0.80
3:03AM
0.52
4:29PM
0.71
3:53AM
0.68
5:43PM
0.59
4:55AM
0.83
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Mon
29
Sunrise-6:43--6:43--6:45--6:45--6:46--6:46--6:46-
Sunset--4:30--4:31--4:32--4:32--4:34--4:34--4:35
part cloud
part cloud
part cloud
cloud
light rain
heavy rain
mod rain
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
clear
clear
part cloud
rain showers
light rain
Rain (mm)
----5339------------15
Temp. °C9101111111514181715973556810101112
Feels °C (?)348991113151411-1-1-400335689
  • 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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