Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
28.3°C
1.8° 

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, 9PM (local time) - 10ft (3.0m), 9s period, S swell with cross-shore winds.
  • Most powerful swell: Monday 7 Sep, 12PM (local time) - 11ft (3.5m), 9s period, S swell with 1,705 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 9PM (local time) - 10ft (3.0m), 9s 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 9PM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 1.0m and 8s. Another secondary swell of 0.3m and 10s is also forecast. 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 12PM. 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 3s period and expected on Wednesday (Sep 09) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 7th Sep)10ft (3.0m) 9s
Best Surf 9PM (Mon 7th Sep)10ft (3.0m) 9s
Most Powerful12PM (Mon 7th Sep)11ft (3.5m) 9s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what’s on offer.

Right off the bat, we’ve got some proper winter energy rolling in, but the early part of this week is pretty much a write-off for a decent paddle. The first few days are dominated by a solid, strong southerly swell with combined energy readings running into the strong range, but the wind is howling from the south and cross-onshore, making it a lumpy, blown-out mess at Big Ben. The waves are big – 10 feet – but the quality is poor and it’s a struggle. By Tuesday, it’s still messy with 7 to 7 feet of southerly swell and cross-shore winds keeping things choppy.

The first real window of opportunity doesn’t open up until Thursday the 10th. The swell drops right back to 3 to 4 feet from the south, but the wind swings around to a cross-offshore from the north-northeast, and it’s clean. The energy is weak, so it’s small and a bit marginal, but at least the surface is clean.

The standout period, and the best bet across the whole outlook, arrives on Friday the 11th and Saturday the 12th. We get a shift in swell direction to the east, with a long-period groundswell of 14 seconds. The swell height is small, just 2 feet, but the energy is moderate. The wind on Saturday morning is absolutely glassy – not a breath – making for some really clean, fun little waves. Friday morning also looks good with a gentle cross-off breeze. This is the pick of the forecast; it’s not big, but for a small-wave board, it’ll be super clean and enjoyable. The crowds at Big Ben are listed as "sometimes", so you might have company, but nothing insane.

The next morning, Saturday the 12th, glassy conditions again, with the swell holding at 2 to 3 feet and that lovely 14-second period. This is the best on offer. The swell direction is east, which suits this break nicely.

The second week sees a bit more activity, but nothing that really screams "go-time". Monday the 16th has a glassy start with 4 feet of easterly swell (12-second period) and moderate energy, so it’s clean but not powerful. The rest of that week is plagued by cross-shore winds and onshore breezes, with small, weak swell and a lot of poor conditions.

The very tail end of the outlook, on Tuesday the 22nd of September, has a spike in swell – 5 feet from the southeast with a very long period of 17 seconds, and combined energy rocketing up. The wind is glassy in the morning. This is a big, powerful groundswell with some serious energy. For experienced surfers, this could be a proper session, but the size and period mean it’ll be powerful, and at a beach/jetty setup, that long period might make it a bit straight and tricky. Definitely one for the crew who know what they’re doing. It’s still over two weeks out, so keep an eye on it, but it has potential.

For the rest of the second week, don’t expect much. It’s mostly small, weak, and messy. The glassy moments are rare, and the swell doesn’t have the guts to make it interesting.

So, to wrap it up: the best surf is this coming Friday and Saturday (the 11th and 12th) with clean, glassy conditions and a nice long-period easterly groundswell. It’s small, but it’s your best bet. The big event at the end of the outlook (22nd) is one for the experienced crew to watch.

Rusty.

Short Range Forecast

Heavy rain (total 111mm), heaviest during Sun night. Warm (max 29°C on Wed morning, min 24°C on Sun night). Winds decreasing (fresh winds from the ESE on Sun night, light winds from the SSW by Tue afternoon).

Days 5-7 Weather Summary

Moderate rain (total 10mm), heaviest on Wed night. Warm (max 26°C on Sat morning, min 20°C on Wed night). Wind will be generally light.

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
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
1
1
1
1
0
!
3
1
1
1
2
1
1
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
ESE
8
3
S
9
3
S
9
2.5
S
9
2.2
S
9
2
S
9
1.5
SSW
9
2.4
S
9
3
SSW
9
2
S
9
1.3
S
8
1
S
8
0.9
S
8
0.6
E
14
0.6
E
14
0.7
E
14
0.7
E
14
0.9
ESE
13
1
ESE
13
Wave Graph
Metric surfscale
Energy kJ
1226
1288
1575
1104
775
627
402
848
1332
675
230
130
100
144
140
183
178
299
384
Wind (km/h)
35
ESE
35
S
30
SSW
25
SW
15
SW
20
SSW
20
SW
30
SW
25
SW
5
SW
15
NNE
20
NNE
20
NNE
15
NNE
10
NNE
5
ENE
5
ENE
10
SE
10
ENE
Wind State
on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
glassy
on
cross
High Tide
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
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
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
light rain
cloud
cloud
part cloud
cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
74
9
5
3
3
4
7
3
3
8
2
Temp °C
26
27
27
27
28
28
27
29
28
24
21
21
20
22
23
23
26
26
24
Feels °C
25
27
27
28
31
31
30
30
29
29
21
20
19
24
26
27
30
30
28
  • Map Icons:
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  • 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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