Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 2 am 29 Jul 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
27.2° C
1.0° 

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 29 Jul 2026:

  • Best quality surf: Monday 3 Aug, 12PM (local time) - 10ft (3.0m), 18s period, SE swell with cross-shore winds.
  • Most powerful swell: Wednesday 5 Aug, 6AM (local time) - 20ft (6.0m), 17s period, SE swell with 22,380 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 3PM (local time) - 3.5ft (1.0m), 7s period with SSW 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 (Jul 29) at 3PM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.5m and 10s. Another secondary swell of 0.3m and 9s is also forecast. 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 17s and forecast to arrive on Wednesday (Aug 05) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Wednesday (Aug 05) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Wed 29th Jul)3.5ft (1.0m) 7s
Best Surf12PM (Mon 3rd Aug)10ft (3.0m) 18s
Most Powerful 6AM (Wed 5th Aug)20ft (6.0m) 17s

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


The Lowdown

Alright folks, it’s Rusty here. Let’s take a look at the extended outlook for Big Ben. The first few days are a bit of a mixed bag, but the second weekend is shaping up to be something special.

For the first week, it’s a slow start. Wednesday the 29th shows a bit of energy with a combined swell energy of 351 and a clean 5ft SW swell that’s cross-offshore, but it’s inconsistent so don’t get your hopes too high. By Thursday, it drops right off to tiny 3ft and 2ft waves with energy levels falling to 89 and 70; just a bit of a waist-high dribble. Friday holds at knee-to-waist high, but the wind turns onshore in the afternoon, making it messy.

The weekend is where it gets interesting. Saturday the 1st of August is a write-off – tiny, onshore, and choppy. But then Sunday the 2nd sees a pulse of very long-period groundswell (14 seconds) arriving. The morning looks unreal with a glassy 4ft ESE swell and a combined energy of 729—that’s moderate energy, but the clean conditions make it a standout for the whole period. The afternoon bumps up to 5ft with a 15-second period. The swell direction is ESE, which is a touch off from the optimum SE direction, but with those long periods and glassy-to-light offshore wind, it’ll be super clean for Big Ben. The water temperature is 81°, which is about a degree warmer than usual for this time of year, so no need for a thick wetsuit.

Now, Monday the 3rd and Tuesday the 4th see a massive jump in swell. We’re talking 8ft to 16ft of SE groundswell, with periods of 17-18 seconds. The combined energy rockets into the thousands (4732, 5585, 9754, 13832) – that’s strong to very strong wave energy. This is expert-only territory. The swell size is over 8ft, the period is very long, and it’s a beach/jetty setup, so those long-period waves will be hard to handle and might break too straight. The wind is either cross or cross-off, keeping it clean, but for most of us, it’s a watch-and-wonder day. The setup looks more interesting for kite surfing than paddle surfing.

Wednesday the 5th is even bigger, hitting 20ft with a 17-second period and a combined energy of 20717. Still, the wind is cross-offshore in the morning, but by the afternoon, rain showers and a fresh 19 mph cross-shore wind will make it lumpy. Again, this is for the brave or the kite crew.

From Thursday the 6th through to Wednesday the 13th, the surf drops back down but stays messy. There are a few sessions with clean waves, like Sunday the 9th morning with a 6ft E swell at 14 seconds and a combined energy of 1710, but the wind is onshore, and the conditions are marginal. The best of this second week is probably Thursday the 13th morning: a solid 15ft SSE swell, a 12-second period, a combined energy of 10186, and cross-offshore winds cleaning it up. But again, 15ft is only for experts, and the wind is strong at 12 mph. It’s powerful but risky.

Overall, the standout window is Sunday the 2nd of August. It’s the only day where the size is manageable for a good range of surfers, the wind is perfect, and the swell has real energy. Get on it.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Wed night. Warm (max 31°C on Wed afternoon, min 24°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Sun afternoon, min 24°C on Sat night). Wind will be generally light.

Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
1
1
1
1
1
0
0
0
0
1
3
3
3
4
!
!
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Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
7
1
SSW
7
0.9
SW
7
0.8
SSW
7
0.4
SE
10
0.7
SSW
7
0.9
SSW
7
0.8
SSW
6
0.6
SSW
6
0.4
SE
15
0.4
ESE
14
0.7
SE
15
1.3
ESE
14
1.5
ESE
15
1.9
ESE
17
2.5
ESE
18
3
SE
18
3.5
SE
17
4
SE
17
5
SE
17
5.5
SE
17
Wave Graph
Metric surfscale
Energy kJ
189
105
69
51
33
38
82
47
28
56
76
217
621
1069
2065
4632
5488
6555
9599
13832
17272
Wind (km/h)
5
WSW
5
SW
5
NNE
5
NE
5
WSW
0
ESE
10
NE
10
E
10
E
20
ENE
15
E
5
E
5
SSE
10
SE
10
E
15
NE
15
ENE
15
ENE
25
NE
25
ENE
25
NNE
Wind State
cross-off
glassy
glassy
glassy
cross-off
glassy
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
on
cross-on
cross
cross-on
cross
cross
cross
cross-off
High Tide
5:50PM1.50m
4:19AM1.53m
6:13PM1.51m
5:03AM1.55m
6:35PM1.50m
5:45AM1.54m
6:57PM1.49m
6:27AM1.49m
7:20PM1.48m
7:11AM1.41m
7:42PM1.47m
7:59AM1.30m
8:06PM1.45m
Low Tide
10:45AM0.06m
11:02PM0.94m
11:20AM0.08m
11:34PM0.85m
11:52AM0.14m
00:07AM0.76m
12:24PM0.23m
00:41AM0.69m
12:53PM0.36m
1:18AM0.62m
1:22PM0.51m
1:59AM0.58m
1:49PM0.67m
2:48AM0.56m
clear
clear
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:45
4:46
4:47
4:47
4:48
4:48
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:45
6:44
6:43
6:42
6:40
6:39
 mm
1
Temp °C
30
31
27
30
30
27
30
29
26
26
26
25
27
28
26
26
27
25
27
27
24
Feels °C
34
34
32
33
34
30
34
32
30
28
28
29
31
31
30
29
30
27
26
26
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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