Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
28.2°C
1.7° 

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


Big Ben surf forecast from 6 Sep 2026:

  • Best quality surf: Monday 7 Sep, 6PM (local time) - 10ft (3.0m), 10s period, S swell with cross-shore winds.
  • Most powerful swell: Monday 7 Sep, 3PM (local time) - 11ft (3.5m), 9s period, S swell with 1,783 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 6PM (local time) - 10ft (3.0m), 10s period with S swell.

Best Forecast Surf Conditions for Big Ben this week:

The surf forecast for Big Ben over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 6PM. The primary swell is predicted to be 3.0m and 10s period with a secondary swell of 1.2m and 8s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Big Ben in the next 16 days are 3.5m 9s and forecast to arrive on Monday (Sep 07) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 8s period and expected on Thursday (Sep 10) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Mon 7th Sep)10ft (3.0m) 10s
Best Surf 6PM (Mon 7th Sep)10ft (3.0m) 10s
Most Powerful 3PM (Mon 7th Sep)11ft (3.5m) 9s

Table - best surf conditions forecast for Big Ben over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on offer at Big Ben over the next couple of weeks. It’s a bit of a mixed bag.

Right off the bat, we’re looking at a rough start. Sunday the 6th and Monday the 7th are a total write-off. We’ve got heavy rain, strong cross-onshore winds, and a lumpy, messy sea state. The swell is there, but it’s ugly. The combined energy is strong to very strong, but it’s all for nothing in these conditions.

The first real chance to get wet comes Tuesday morning, the 8th of September. The wind swings around to a light cross-offshore, and the sea cleans right up. The swell is a solid 7ft from the South, with a moderate period of 9 seconds. The combined energy is moderate. This is the standout of the whole run. The water is a touch warmer than normal for this time of year, sitting at 83°.

Thursday morning, the 10th, also looks clean with a gentle cross-offshore breeze, but the swell has dropped back to 5ft from the South. It’s surfable, but not as punchy as Tuesday.

Then we hit a dry spell. Friday the 11th and Saturday the 12th have some small, glassy conditions, with a long-period swell of 14 seconds rolling in from the East. The swell is tiny though, only 2ft to 3ft. The energy is weak. It’s a long-period groundswell, so it might wrap in a bit better at a point or reef, but at a beach/jetty setup like this, it’s going to be a slow, straight wall. Not worth getting excited about.

From Sunday the 13th right through to the 20th, it’s a real grind. The wind is mostly cross-shore or cross-onshore, keeping things choppy and messy. The swell height bounces around between 2ft and 6ft, but the quality is poor to marginal at best. We get a little window on Wednesday the 16th with a light cross-offshore breeze and 3ft to 3ft swell from the East (12-13 second period), which is clean, but it’s tiny. The energy is weak. A good beach day, not a surf day.

The last few days, from the 19th to the 21st, don’t offer much either. The wind is onshore or cross-onshore, and the swell is small and weak. Sunday afternoon the 20th has a glassy moment, but the swell is only 2ft.

So, the only true standout here is Tuesday morning, September 8th at Big Ben. That’s your window. After that, it’s a long stretch of waiting for something to clean up, but the pattern doesn’t look likely to turn around. The crowd factor is something to keep in mind here – it’s a spot that can get busy, so if you’re heading out on that Tuesday, get in early.

Rusty.

Short Range Forecast

Heavy rain (total 194mm), heaviest during Sun afternoon. Warm (max 27°C on Mon morning, min 22°C on Sun morning). Winds decreasing (strong winds from the S on Mon morning, calm by Tue morning).

Days 4-6 Weather Summary

Moderate rain (total 14mm), heaviest on Wed night. Warm (max 28°C on Wed morning, min 19°C on Thu morning). Winds decreasing (fresh winds from the SW on Wed morning, calm by Fri morning).

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
3
3
2
2
0
1
1
3
1
2
2
2
2
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
E
7
2.4
E
7
3
ESE
8
3.5
SSE
8
3.5
S
9
2.5
S
9
2
S
9
1.8
S
9
2
S
9
2.4
S
9
2.5
S
9
2.4
SSW
9
1.5
S
8
1.1
S
8
0.9
S
8
0.6
E
14
0.6
E
14
0.7
E
14
0.9
E
14
0.9
ESE
14
1
E
14
Wave Graph
Metric surfscale
Energy kJ
396
623
1025
1533
1783
1185
650
517
621
879
987
860
317
157
105
144
140
180
297
313
377
Wind (km/h)
30
NE
30
ENE
30
ESE
35
SSE
35
SSW
20
SW
15
WSW
10
SSW
15
SW
30
SW
30
SW
15
NE
15
N
15
NE
10
NNE
5
NW
10
NNE
10
NNE
20
NE
20
NE
15
NE
Wind State
cross
cross-on
on
cross-on
cross-on
cross-off
cross-off
cross
cross
cross
cross
cross
cross-off
cross
cross-off
glassy
cross-off
cross-off
cross
cross
cross-off
High Tide
3:59PM1.32m
10:09PM1.26m
3:49PM1.38m
1:09AM1.28m
4:00PM1.44m
2:25AM1.38m
4:17PM1.48m
3:18AM1.48m
4:35PM1.51m
4:02AM1.57m
4:53PM1.53m
4:42AM1.62m
5:12PM1.55m
Low Tide
8:43PM1.26m
7:44AM0.44m
8:59PM1.14m
8:40AM0.37m
9:23PM1.01m
9:23AM0.31m
9:48PM0.87m
9:59AM0.30m
10:15PM0.72m
10:31AM0.32m
10:42PM0.59m
11:01AM0.38m
11:11PM0.48m
heavy rain
heavy rain
thunderstorm
thunderstorm
mod rain
mod rain
heavy rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:15
5:16
5:16
5:16
5:18
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
5:59
5:57
5:55
5:54
5:52
5:52
 mm
17
72
53
12
6
6
21
4
3
4
5
5
Temp °C
23
24
26
27
27
27
25
26
27
28
28
21
21
22
22
24
23
22
24
24
23
Feels °C
21
23
25
27
27
29
30
30
28
29
29
21
22
23
24
28
25
24
25
25
24
  • 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 16 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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