Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 2 pm 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
27.8°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 25 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 6AM (local time) - 3ft (0.9m), 11s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 25 Aug, 6PM (local time) - 5.5ft (1.7m), 11s period, S swell with 747 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 9AM (local time) - 2ft (0.6m), 14s 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 Thursday (Aug 27) at 9AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.6m and 10s. Another secondary swell of 0.6m and 11s is also forecast. Another secondary swell of 0.9m and 6s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Big Ben in the next 16 days are 1.7m 11s and forecast to arrive on Tuesday (Aug 25) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Wednesday (Aug 26) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 27th Aug)2ft (0.6m) 14s
Best Surf 6AM (Tue 1st Sep)3ft (0.9m) 11s
Most Powerful 6PM (Tue 25th Aug)5.5ft (1.7m) 11s

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


The Lowdown

Alright crew, Rusty checkin' in with the imperial rundown for Big Ben. The next two weeks are a bit of a rollercoaster, and honestly, there's a long stretch where you'll be better off doing something else.

Kicking things off, the water temp is about 82°, so it's a touch warmer than usual for this time of year – just a nice bit of comfort.

The 25th has a solid swell push with waves in the 6 to 7 ft range, but the wind is tearing it up from the southwest, creating a nasty cross-chop. The energy is huge (1662), but it's a total mess – not a day for a fun paddle.

From the 26th onward, it gets real quiet. For over a week, right through the end of August and into September, we're looking at waves mostly under 2 ft, sometimes with a clean morning breeze, but never enough oomph to get you excited. There's a gap of about 8 days where nothing really stands out.

There are a few small bright spots. On Thursday, August 27th afternoon, the forecast shows a tiny 2 ft east swell, but the wind goes totally glassy with a north breeze at just 3 mph. The energy is minimal, but for a log or a twinny, that afternoon glass could be your best bet for a clean slide.

Later on, Friday morning, September 4th has a 2 ft southwest swell with zero wind – dead calm. Glassy conditions like that in early September are a treat, so it could be worth a dawn patrol.

The pick of the litter, though, is likely Sunday, September 6th. A 4 ft south swell rolls in with a solid 12-second period and a light east-northeast breeze that should keep it clean. The energy reading hits 919, which is the strongest we see in the whole outlook. That's proper groundswell energy, so the banks could line up well. Expect the crowd to show up though.

So, a whole lot of waiting, but there are a couple of windows worth chasing. Keep your eyes peeled and be ready to move.

Rusty.

Short Range Forecast

Moderate rain (total 12mm), heaviest on Thu morning. Warm (max 30°C on Wed morning, min 24°C on Thu afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Sat morning. Warm (max 28°C on Fri afternoon, min 23°C on Sat morning). Wind will be generally light.

Tue
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
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
2
0
0
2
1
0
2
1
2
0
0
1
0
1
1
1
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)
1.8
S
12
1.2
S
11
0.9
SSW
12
0.9
SSW
12
1.5
SW
11
0.6
E
14
0.7
E
13
0.8
E
13
0.8
E
12
0.7
E
12
0.7
E
12
0.6
E
12
0.6
E
11
0.5
E
11
0.6
E
11
0.6
E
12
0.6
E
12
0.6
SW
10
0.8
S
12
0.9
S
11
Wave Graph
Metric surfscale
Energy kJ
895
326
233
196
534
146
173
212
193
139
137
98
93
63
93
99
98
62
175
185
Wind (km/h)
25
SW
25
SW
15
WSW
25
SW
30
SW
15
NNW
5
NE
20
SSW
15
W
20
WSW
0
N
15
NE
15
NE
10
NNE
10
ENE
5
SSE
5
NNW
5
NNE
5
SSW
5
NNE
Wind State
cross
cross
cross-off
cross
cross
off
cross
cross
cross-off
cross-off
glassy
cross
cross
cross-off
cross
glassy
off
glassy
cross-on
glassy
High Tide
4:31PM1.46m
2:51AM1.43m
4:50PM1.50m
3:40AM1.52m
5:08PM1.52m
4:23AM1.58m
5:27PM1.54m
5:03AM1.61m
5:47PM1.54m
5:42AM1.60m
6:06PM1.55m
6:21AM1.55m
6:26PM1.55m
Low Tide
9:46PM1.02m
9:53AM0.22m
10:14PM0.89m
10:28AM0.21m
10:42PM0.76m
10:59AM0.24m
11:10PM0.64m
11:29AM0.31m
11:40PM0.54m
11:57AM0.41m
00:11AM0.46m
12:23PM0.54m
00:45AM0.42m
clear
clear
clear
clear
part cloud
mod rain
light rain
light rain
cloud
part cloud
rain showers
light rain
cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:05
5:07
5:07
5:09
5:09
5:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:16
6:15
6:14
6:13
6:10
6:09
6:08
 mm
8
2
2
2
3
1
Temp °C
29
27
30
29
27
27
24
26
28
28
25
24
24
24
26
26
25
27
28
25
Feels °C
30
28
32
30
29
31
27
28
29
29
29
26
25
26
28
30
29
31
32
29
  • 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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