Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 2 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
28.1°C
1.5° 

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 31 Aug 2026:

  • Best quality surf: Wednesday 2 Sep, 3AM (local time) - 4ft (1.2m), 11s period, E swell with glassy winds.
  • Most powerful swell: Tuesday 8 Sep, 9AM (local time) - 6ft (1.9m), 10s period, SSE swell with 720 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 3AM (local time) - 4ft (1.2m), 11s 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 Wednesday (Sep 02) at 3AM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 0.3m 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 1.9m 10s and forecast to arrive on Tuesday (Sep 08) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Sep 05) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Wed 2nd Sep)4ft (1.2m) 11s
Best Surf 3AM (Wed 2nd Sep)4ft (1.2m) 11s
Most Powerful 9AM (Tue 8th Sep)6ft (1.9m) 10s

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


The Lowdown

Alright, Rusty here, with a look at the next few weeks for our local patch.

The first real surfable conditions don't show up until Wednesday the 2nd of September, with a few days of clean, small waves before the sea gets a bit lumpy. There's a real standout window on the 7th and 14th, but you've got to pick your days carefully.

The water is sitting at a warm 83°F this morning, which is a touch warmer than normal for this time of year. The first wave of the run is a small, glassy morning on Wednesday the 2nd at Big Ben. It's a beach/jetty setup, exposed to the SE, and the swell is coming from the east at 4 ft with a 10-second period. The ENE wind is only 3 mph and glassy, meaning it'll be clean. The combined energy is moderate at 298. It's inconsistent here, so don't expect a constant wave, but for a beginner-friendly spot, this is a nice, gentle start.

That clean spell doesn't last. The wind swings onshore by Thursday the 3rd, and we get a run of messy, marginal conditions right through to the 6th. We're looking at light rain and cross-shore breezes, with swell heights around 2 ft to 4 ft and short, weak periods. There's a lot of nothing happening for a few days there.

Then we get a proper standout. Monday morning, the 7th of September, the wind goes clean and cross-off from the NNW at 6 mph. The swell jumps to 7 ft from the ENE, but with a short 7-second period. The combined energy is moderate at 481, and the conditions are reported as clean. This is the best window in the first week for a paddle. The crowd situation here is "sometimes," so you might have a few out, but it's worth it for that clean face.

The models then show a massive pulse of energy building from the 8th. By Wednesday the 9th, we're looking at a 10 ft SSE swell with a 14-second period and a huge combined energy of 4016. The wind is offshore from the NW at 12 mph, which is perfect. But honestly, for a spot like Big Ben, 10 ft is getting too big for a beginner, and by the 10th, it's pushing 20 ft, which is expert-only territory. The file says wind and tide are favorable, but the swell is just too big for this break. It's a real shame, because the conditions are there.

The energy stays high through the 11th, but with strong cross-onshore winds making it lumpy and poor. Things settle down again by the 14th of September. Monday morning the 14th looks promising: a 7 ft SE swell with a 9-second period, combined energy of 964, and clean cross-off winds from the NNE at 6 mph. The scores suggest this is a very good option. But again, the swell is heading up again after that, with the 15th showing an 12 ft SSE swell, which is back to being too big for the break.

So, to sum it up: the best of the run is the clean, glassy morning on the 7th of September for the moderate swell, and the promising, clean conditions on the 14th. The massive swells in between are a spectacle, but not for paddling out here.

Rusty.

Short Range Forecast

Moderate rain (total 11mm), heaviest on Thu night. Warm (max 29°C on Thu morning, min 22°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 100mm), heaviest during Sun night. Warm (max 23°C on Fri morning, min 20°C on Fri night). Mainly fresh winds.

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
2
1
1
0
1
1
0
1
1
0
0
0
0
0
0
2
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
ESE
12
1.1
E
11
1.2
E
11
1.1
E
10
0.8
E
10
0.9
E
11
0.8
E
10
0.9
S
8
0.7
E
10
0.7
SSW
10
0.7
SSW
10
0.9
SSW
9
0.8
SSW
9
1.3
ENE
6
1.3
ENE
6
1.7
ENE
6
1.7
ENE
7
1.7
ENE
6
2
ENE
7
1.4
E
7
1.3
SSE
9
Wave Graph
Metric surfscale
Energy kJ
228
295
335
249
125
191
125
116
92
100
94
116
86
112
119
232
255
237
342
203
287
Wind (km/h)
15
ENE
10
ENE
10
NE
5
ENE
10
SSE
5
SSW
10
S
15
SW
5
NNE
20
NE
10
NE
20
NNE
15
NE
25
ENE
25
NE
30
NE
30
NE
25
NNE
10
NNW
15
N
20
NNE
Wind State
cross
cross-on
cross
glassy
on
cross-on
cross-on
cross
cross-off
cross
cross
cross-off
cross
cross-on
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
High Tide
6:45PM1.54m
7:47AM1.35m
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
Low Tide
12:48PM0.68m
1:22AM0.41m
1:09PM0.82m
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
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
thunderstorm
mod rain
mod rain
heavy rain
heavy rain
mod rain
rain showers
rain showers
light rain
light rain
heavy rain
mod rain
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:11
5:11
5:11
5:13
5:13
5:13
5:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:06
6:04
6:02
6:01
6:00
5:59
 mm
2
9
9
12
14
8
3
1
3
2
48
7
3
10
Temp °C
26
27
25
28
28
26
29
28
23
23
22
20
21
22
22
22
22
22
21
22
23
Feels °C
27
29
28
31
30
30
32
31
25
24
24
20
21
21
22
19
19
20
22
23
24
  • 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
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Big Ben:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big Ben surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest