Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 2 pm 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
26.8°C
0.2° 

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 2 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 9AM (local time) - 20ft (6.0m), 12s period, S swell with cross-shore winds.
  • Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 20ft (6.0m), 12s period, S swell with 9,199 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 9PM (local time) - 2.5ft (0.7m), 10s period with E 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 Thursday (Sep 03) at 9PM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.8m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Big Ben in the next 16 days are 6.0m 12s and forecast to arrive on Wednesday (Sep 09) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Sep 07) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 3rd Sep)2.5ft (0.7m) 10s
Best Surf 9AM (Wed 9th Sep)20ft (6.0m) 12s
Most Powerful 9AM (Wed 9th Sep)20ft (6.0m) 12s

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


The Lowdown

Right then, let's have a look at what's on the cards. I'm not gonna lie, the next week or so is lookin' pretty grim. We’ve got a long stretch of not much to get excited about, with the first proper chance of a wave not really showin' up until well into the second week.

The whole start of the period is a write-off. Wednesday the 2nd through to Saturday the 6th is a total bust – poor conditions with messy wind and weak swell. You’d be better off waxing your board for the sake of it.

Sunday the 7th of September has a bit of size, with swell building to around 7 ft from the east-northeast, but it’s still a bit raw. The wind is clean though, a cross-offshore from the north, so the surface will be smooth. The combined wave energy is strong (883), but the quality is just marginal. Not a standout, but a glimmer of hope.

Now, Wednesday the 9th of September is where things get serious, but it’s for the big dogs only. We’re lookin' at a massive 20 ft swell from the south, with a period of 12 seconds – that’s a real groundswell. The combined energy is enormous (9250). The wind is cross-shore, but the truth is, this is way, way too big for Big Ben. This is a beginner spot and at that size, it's just dangerous. It'll be a foaming, rolling mess. A real shame, because the conditions are otherwise favorable.

The next few days after that are still messy with big, unruly swell. The next real chance for a paddle comes on Tuesday the 15th of September. There’s a long-period swell rollin' in from the east, 16 seconds, at 4 ft. The combined energy is strong (1055), and with a light cross-onshore wind, it’s just about surfable. At Big Ben, a long period swell like this might not be the best shape for a beach/jetty break, but it’s the first real window we’ve had.

Then the big stuff comes back. Wednesday the 16th of September sees another huge 12 ft south-southeast swell, again too big for this break. Combined energy is massive (6566), but it's a write-off for anyone without a death wish.

So, the best of a bad bunch? Honestly, the early morning of Tuesday the 15th of September is your standout. The 4 ft, 16-second easterly swell is the most manageable size we get, and while the wind isn't perfect, it's the closest we come to a decent session. Don't expect much else. This is a long blank run for the area, and it's just how it goes sometimes.

Stay patient,
Rusty.

Short Range Forecast

Heavy rain (total 147mm), heaviest during Fri night. Warm (max 29°C on Thu morning, min 20°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the NE by Fri night).

Days 5-7 Weather Summary

Heavy rain (total 206mm), heaviest during Sun night. Warm (max 27°C on Tue morning, min 22°C on Sat afternoon). Winds decreasing (fresh winds from the ENE on Sun night, light winds from the E by Mon night).

Wed
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
0
0
0
0
0
1
0
0
0
0
0
2
2
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
E
10
1.1
E
11
0.9
E
10
0.7
E
10
0.6
E
10
0.6
SSW
10
0.6
SSW
10
1.2
ENE
5
1.4
E
6
1.6
E
7
1.8
E
7
2.2
E
7
2.2
E
8
2.4
E
8
2
ENE
8
1.8
ENE
8
1.7
S
8
1.7
SSE
9
2.3
S
11
3.5
SSE
13
Wave Graph
Metric surfscale
Energy kJ
234
282
159
94
68
78
75
78
158
232
278
522
535
765
581
445
403
453
1323
3713
Wind (km/h)
10
SE
5
SSE
15
SSW
20
SW
15
NE
10
NE
15
NNE
25
NE
20
N
25
NNE
25
NNE
25
NE
25
ENE
35
ENE
30
N
25
N
25
NE
30
SE
40
SE
40
S
Wind State
on
cross-on
cross
cross
cross
cross
cross-off
cross
cross-off
cross-off
cross-off
cross
cross-on
cross
cross-off
cross-off
cross
on
on
cross-on
High Tide
7:06PM1.51m
8:45AM1.23m
7:27PM1.48m
10:29AM1.12m
7:48PM1.43m
8:08PM1.35m
3:59PM1.32m
10:09PM1.26m
3:49PM1.38m
1:09AM1.28m
4:00PM1.44m
2:25AM1.38m
Low Tide
2:05AM0.43m
1:26PM0.96m
3:00AM0.47m
1:21PM1.08m
4:21AM0.52m
6:15AM0.51m
8:43PM1.26m
7:44AM0.44m
8:59PM1.14m
8:40AM0.37m
9:23PM1.01m
part cloud
light rain
cloud
cloud
thunderstorm
thunderstorm
heavy rain
heavy rain
mod rain
cloud
cloud
light rain
light rain
heavy rain
heavy rain
light rain
heavy rain
mod rain
mod rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:11
5:13
5:13
5:13
5:15
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:04
6:02
6:01
6:00
5:59
5:57
 mm
1
4
2
11
119
10
2
3
144
28
4
16
9
8
27
Temp °C
27
26
29
28
26
24
23
22
21
22
22
23
24
24
22
22
25
27
27
27
Feels °C
29
30
31
30
31
27
24
20
20
20
20
22
23
22
20
21
28
27
26
30
  • 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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