Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 pm 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
27.9° 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 2 Aug 2026:

  • Best quality surf: Monday 3 Aug, 9PM (local time) - 10ft (3.0m), 17s period, SE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 12PM (local time) - 15ft (4.5m), 16s period, SE swell with 11,044 kJ wave energy.
  • Next surfable swell (1★+): Monday 3 Aug, 9PM (local time) - 10ft (3.0m), 17s period with SE 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 Monday (Aug 03) at 9PM. The primary swell is predicted to be 3.0m and 17s period with a secondary swell of 0.5m and 14s. Another secondary swell of 1.8m and 7s 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 4.5m 16s and forecast to arrive on Wednesday (Aug 05) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 3rd Aug)10ft (3.0m) 17s
Best Surf 9PM (Mon 3rd Aug)10ft (3.0m) 17s
Most Powerful12PM (Wed 5th Aug)15ft (4.5m) 16s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.

First off, I’ve gotta be straight with you – the early part of the week is going to be a bit of a write-off for a paddle. We’ve got a big, powerful, long-period groundswell (16 seconds) marching in from the SE, but the size is just too much for a beginner-friendly spot like Big Ben. Monday morning we’re looking at 7ft of swell, but the real issue is that it’s just going to be too big and raw for anyone who isn’t proper experienced. The combined energy is already strong (2649), and it just builds from there.

Tuesday morning, the swell jumps to 12ft with a SE direction, and the energy is pumping (5766). The wind is offshore, which normally would have me dancing, but the size is pushing over 8ft – that’s expert-only territory. The same goes for Wednesday morning, with a solid 15ft SE swell. The energy is massive (10311), and while the wind is clean, the waves are just too heavy for a standard beach/jetty setup. If you’re a kite surfer, this might be your window, but for a paddle surfer, I’d sit this one out.

After that, the swell drops a bit but the wind turns onshore. Thursday through Saturday sees a lot of cross-onshore wind and lumpy, choppy conditions. The swell is still decent in size, around 7ft to 10ft, but the quality is poor. It’s not worth getting wet for.

Now, here’s the standout. If you can wait, Monday the 10th of August is where it’s at. We’ve got a 8ft swell from the E, with a period of 13 seconds, and the wind is a clean cross-offshore from the N. The combined energy is strong (5655), and the break will be clean. This is the best on offer in the whole 16-day window. The only catch is that Big Ben can be inconsistent, and crowds are sometimes an issue, so get there early if you can.

The following week, from the 11th onward, the size stays big again, with 12ft ENE swells, but the wind remains clean on the mornings. By Friday the 14th of August, we see a drop in size to 5ft from the ENE, with a light west-northwest cross-offshore wind. The energy is moderate (836), and the conditions look very good. This is a solid second option for the patient surfer.

After that, the swell fades out pretty quickly. By the weekend of the 16th, we’re looking at small, weak waves (3ft to 4ft) with energy dropping below 600. The wind is still clean, but there’s just not enough juice to make it worthwhile.

So, to sum it up: the first week is mostly too big or too messy. The clear standout is Monday the 10th of August with a clean 8ft E swell. For a second pick, Friday the 14th of August offers a smaller but cleaner session. After that, it’s a long gap of small surf until the end of the forecast.

Stay safe out there, and don’t get caught inside on those big ones.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Wed afternoon, min 22°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

Moderate rain (total 17mm), heaviest on Fri night. Warm (max 29°C on Fri morning, min 24°C on Wed night). Wind will be generally light.

Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
2
!
!
!
!
!
!
!
!
0
!
0
0
2
2
2
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
ESE
15
2.2
SE
16
2.4
SE
17
3
SE
16
3.5
SE
16
3.5
SE
16
4.5
SE
16
4.5
SE
16
4.5
SSE
16
4
SSE
16
4
S
16
4
S
16
3.5
S
16
3
S
16
3
SSW
15
2.4
SSW
14
2.5
SSW
15
2.4
SSW
15
2.3
SSW
16
Wave Graph
Metric surfscale
Energy kJ
1368
2349
3377
4498
5254
6967
9840
10311
10772
8037
8457
7936
5940
4409
3420
2445
2620
2646
2518
Wind (km/h)
25
NE
25
NNE
30
NE
25
NNE
30
NNE
30
NE
25
NNE
30
NNE
30
NE
20
NNE
20
ENE
25
E
20
E
25
E
20
E
20
E
20
ENE
20
ENE
15
ENE
Wind State
cross
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
High Tide
7:11AM1.41m
7:42PM1.47m
7:59AM1.30m
8:06PM1.45m
9:01AM1.18m
8:31PM1.43m
10:40AM1.08m
9:01PM1.40m
9:44PM1.36m
4:28PM1.26m
11:10PM1.33m
Low Tide
1:18AM0.62m
1:22PM0.51m
1:59AM0.58m
1:49PM0.67m
2:48AM0.56m
2:13PM0.83m
3:50AM0.55m
2:28PM0.99m
5:14AM0.52m
6:50AM0.45m
6:32PM1.25m
part cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:48
4:50
4:50
4:50
4:52
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:40
6:39
6:38
6:37
6:37
6:36
 mm
3
3
3
3
5
Temp °C
24
26
26
23
26
25
23
26
27
25
28
28
26
29
28
26
28
28
25
Feels °C
24
25
24
22
23
22
22
26
27
26
29
29
27
30
29
28
28
29
27
  • 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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