Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
25.4° C
0.1° 

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 20 Jul 2026:

  • Best quality surf: Wednesday 22 Jul, 6AM (local time) - 3.5ft (1.0m), 10s period, E swell with cross-offshore winds.
  • Most powerful swell: Tuesday 21 Jul, 12AM (local time) - 4.5ft (1.3m), 11s period, E swell with 410 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 22 Jul, 6AM (local time) - 3.5ft (1.0m), 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 Wednesday (Jul 22) at 6AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.2m and 8s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Big Ben in the next 16 days are 1.3m 11s and forecast to arrive on Tuesday (Jul 21) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Thursday (Jul 23) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Wed 22nd Jul)3.5ft (1.0m) 10s
Best Surf 6AM (Wed 22nd Jul)3.5ft (1.0m) 10s
Most Powerful12AM (Tue 21st Jul)4.5ft (1.3m) 11s

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


The Lowdown

Alright, Rusty here. Let's break down the outlook for Big Ben.

The water temp is 78°, which is pretty average for the time of year. Nothing unusual.

The forecast starts off slow and messy. Monday and Tuesday are a waste with poor conditions and cross-shore winds messing up the weak, short-period swell. The combined energy is low, around 148 to 373, so not worth the effort.

Wednesday morning, July 22nd, is the first sign of life. We've got a clean 3ft swell from the east with a 10-second period, and the wind is a light cross-offshore. The energy is moderate at 242, and the report says to expect good surf. It's a small window, as the afternoon turns ugly again.

Thursday morning, the 23rd, is a bit of a letdown. The swell drops to 3ft from the ENE, but the wind goes glassy. It's clean as a mirror, but the waves are just ordinary. The energy is down to 162, so it's a longboard or foamie session.

Then we hit a long dry patch. From Friday the 24th all the way through to Monday the 27th of July, it's a mix of poor or marginal conditions. A few longer-period swells roll in, like a 16-second pulse on the 25th, but the wind is always onshore or cross-shore, and the wave heights are tiny. It's a real grind.

Now, here's the one to circle. Tuesday the 28th of July. This is the day. Big Ben is the spot. The swell jumps to 5-6ft from the SSW, with a very long period of 14 to 15 seconds. That's proper groundswell. The combined energy is a strong 1275. The wind is offshore in the morning, then goes glassy in the afternoon. The report says "excellent surf conditions for experienced surfers." This is a powerful, big swell, so it's for the experts only. The long period will give it shape and power, but it might be a bit straight at a beach break. This is the best on offer, hands down.

The rest of the week after that fades. Wednesday the 29th is still okay with a 4-5ft SSW swell, but the wind turns cross or onshore, making it a bit messy. By Thursday the 30th and into August, it's back to small, poor, and choppy. There's a brief pop on Sunday, August 2nd, with a 2ft, 15-second swell from the east and a clean cross-offshore wind, but it's tiny and the energy is moderate at 396. It's a longboard wave at best.

The very end of the run, August 4th, sees another big pulse of energy from the SSE at 5-6ft with a 15-second period, but the onshore wind is howling at 15-16 mph, making it a total mess. That setup looks more interesting for kite surfing than paddle surfing.

So, bottom line: the first week is mostly a dud. The absolute standout is Tuesday, July 28th. Get on it.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 31°C on Tue morning, min 25°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 18mm), heaviest on Fri night. Warm (max 30°C on Thu morning, min 24°C on Fri night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
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
1
1
0
1
2
0
1
1
0
1
0
0
1
0
0
0
1
0
1
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
E
9
0.9
E
8
1.3
E
11
1.2
ENE
11
1.1
ENE
10
1
E
10
1
E
10
1
E
10
0.9
ENE
10
0.8
ENE
10
0.7
E
9
0.7
E
9
0.6
E
9
0.5
SE
11
0.4
SE
16
0.4
SE
16
0.4
SE
16
0.4
SE
15
0.6
SE
11
1
E
6
1.1
ESE
6
Wave Graph
Metric surfscale
Energy kJ
120
116
410
337
281
204
208
208
163
125
85
81
59
57
91
90
87
78
76
74
89
Wind (km/h)
10
SW
20
SW
15
SW
10
SW
20
SW
15
SW
10
WSW
20
SW
10
SW
5
ENE
10
E
10
NNE
15
ENE
15
E
10
E
10
NE
10
E
5
E
10
S
10
S
10
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross-off
cross
cross
glassy
cross-on
cross-off
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
8:26PM1.41m
8:37AM1.20m
8:54PM1.39m
9:58AM1.10m
9:25PM1.38m
12:17PM1.05m
10:06PM1.36m
3:23PM1.15m
11:05PM1.35m
4:08PM1.27m
00:24AM1.35m
4:36PM1.36m
1:40AM1.39m
Low Tide
1:55PM0.52m
2:46AM0.65m
2:25PM0.68m
3:46AM0.60m
2:55PM0.85m
5:01AM0.55m
3:28PM1.01m
6:26AM0.47m
4:56PM1.15m
7:40AM0.36m
7:43PM1.20m
8:39AM0.25m
9:04PM1.17m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:39
4:39
4:39
4:41
4:41
4:41
4:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:50
6:50
6:49
6:47
6:47
 mm
4
8
3
3
14
Temp °C
30
30
26
31
30
26
31
30
27
30
30
26
28
27
25
26
25
24
27
27
25
Feels °C
33
33
30
34
33
30
34
33
32
34
34
31
31
30
29
29
28
28
30
30
29
  • 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