Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
26.7° C
0.4° 

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 30 Jul 2026:

  • Best quality surf: Monday 3 Aug, 3PM (local time) - 10ft (3.0m), 18s period, SE swell with cross-shore winds.
  • Most powerful swell: Thursday 6 Aug, 3AM (local time) - 16ft (5.0m), 17s period, SSE swell with 14,339 kJ wave energy.
  • Next surfable swell (1★+): Friday 31 Jul, 12AM (local time) - 4.5ft (1.3m), 6s period with SW 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 Friday (Jul 31) at 12AM. The primary swell is predicted to be 1.3m and 6s period with a secondary swell of 0.9m and 6s. Another secondary swell of 0.3m and 10s 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 5.0m 17s and forecast to arrive on Thursday (Aug 06) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Aug 04) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 31st Jul)4.5ft (1.3m) 6s
Best Surf 3PM (Mon 3rd Aug)10ft (3.0m) 18s
Most Powerful 3AM (Thu 6th Aug)16ft (5.0m) 17s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it for Big Ben.

Alright, let’s be straight with you. The next few days are looking pretty grim at Big Ben. We’ve got a long stretch of weak, short-period swell and poor wind conditions that just aren’t going to deliver anything decent. For the first few days, from Thursday the 30th of July through to Friday the 31st, the swell is tiny, barely 2ft to 3ft, with a short period of 6 seconds. The wind is mostly cross or cross-on, making for choppy, bumpy conditions. It’s just not worth getting wet.

Saturday morning the 1st of August, the swell drops right off to 1.0ft, but at least the wind goes glassy. The combined energy is weak (55), so it’s barely a ripple. You might get a few knee-high wobbles, but it’s really ordinary.

We get a bit of a pulse on Sunday the 2nd of August. The swell picks up to 5ft, coming from the ESE with a very long period of 16 seconds. The combined energy is moderate (1047). That period is a real groundswell, which means it’ll have more shape, but at a beach/jetty setup, those long-period swells can break a bit too straight. The wind is a light cross-on from the ENE, so it won’t be perfect, but it’s the best we’ll have seen in days. The morning is your best bet. By the afternoon, the wind picks up to 9 mph and it gets choppy.

Now, here’s the thing. From Monday the 3rd of August through to the 8th, the swell gets big. We’re talking 8ft up to 16ft from the SE and S. The combined energy gets massive, hitting 10,000+ (very strong). For a beginner-friendly spot, this is way too big. Anything over 8ft is only for experts. The wind is mostly cross or cross-on, making it messy. The forecasts say the wind and tide are favorable, but the swell is just too big for this break. It’s going to be a washing machine. It might be a better setup for the kite surfers than paddle surfers.

The swell finally starts to drop on the 8th of August. Saturday the 8th sees 5ft to 6ft from the SW and ESE, with a period of 13 to 15 seconds. The wind is still cross-on, but it’s lighter, so the morning session might be workable. It’s a marginal call.

The second week, from the 9th of August onward, is a bit of a mixed bag of mediocrity. There’s consistent swell between 5ft and 8ft, but the wind is almost always cross-on or cross-shore chopping it up. The best potential looks like Wednesday the 12th of August morning, with 8ft from the ENE, but the period is a short 9 seconds, so it’ll be weak and lumpy. Then it jumps to 16ft in the afternoon – way too big again.

The real standout is Tuesday the 13th of August morning. The wind goes clean offshore (cross-off from the NE) with an 12ft swell from the E. The period is 12 seconds, which is good. The combined energy is very strong (5407). That’s a solid, powerful swell, but at 12ft, it’s expert-only. If you’re a charger, that’s the window. It’s a promising call, but it’s over a week away, so don’t lock it in.

The water temperature is sitting at 80° with a normal anomaly of 0.7°, so it’s pretty average for this time of year.

So, to sum it up: the first few days are a complete write-off. Sunday the 2nd is the best of the early stuff, but it’s not a classic. The only real standout for strong surfers is the 13th of August morning, but it’s a big-swell, expert-only window. For the rest, it’s a waiting game. The setup doesn’t look great for paddle surfing in the big stuff, so keep an eye on the kite crew.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 31°C on Fri morning, min 26°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 31°C on Sun morning, min 23°C on Mon night). Wind will be generally light.

Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
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
2
0
0
1
1
1
2
3
2
3
3
!
!
!
0
!
!
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
10
0.8
SSW
6
1.3
SW
6
0.9
SSW
6
0.7
SSW
6
0.3
E
11
0.3
E
11
0.5
SE
16
0.6
ESE
18
1.4
ESE
16
1.6
ESE
15
2.1
ESE
16
2.5
SE
17
3
SE
18
3
SE
16
3.5
SE
16
4
SE
16
4
SE
16
4.5
SSE
16
4.5
SSE
17
5
SSE
17
Wave Graph
Metric surfscale
Energy kJ
23
45
141
59
41
20
21
124
217
957
1147
2314
3483
5194
5472
6551
7786
7961
10153
12523
13872
Wind (km/h)
5
SSE
15
SW
5
NW
10
NE
10
SSE
5
E
5
E
5
SE
5
NE
5
ENE
15
E
20
NE
20
NE
25
ENE
15
NNE
20
NE
25
ENE
15
NE
15
NE
15
E
10
ENE
Wind State
cross-on
cross
glassy
cross
on
glassy
glassy
on
glassy
cross-on
cross-on
cross-off
cross
cross
cross-off
cross
cross-on
cross
cross
cross-on
cross
High Tide
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
9:01AM1.18m
8:31PM1.43m
Low Tide
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
2:13PM0.83m
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:46
4:47
4:47
4:48
4:48
4:50
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:44
6:43
6:42
6:40
6:39
6:38
 mm
Temp °C
30
30
28
31
30
27
30
30
27
31
30
24
27
27
24
28
27
24
28
28
26
Feels °C
33
33
33
35
34
32
33
34
32
35
33
25
27
27
25
29
27
26
30
30
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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