Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
27.9°C
1.1° 

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 26 Aug 2026:

  • Best quality surf: Wednesday 2 Sep, 3AM (local time) - 4ft (1.2m), 12s period, S swell with glassy winds.
  • Most powerful swell: Thursday 3 Sep, 3AM (local time) - 5ft (1.5m), 12s period, S swell with 657 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 6PM (local time) - 2.5ft (0.8m), 13s 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 6PM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.7m and 10s. Another secondary swell of 0.9m and 5s 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 1.5m 12s and forecast to arrive on Thursday (Sep 03) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Friday (Aug 28) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Thu 27th Aug)2.5ft (0.8m) 13s
Best Surf 3AM (Wed 2nd Sep)4ft (1.2m) 12s
Most Powerful 3AM (Thu 3rd Sep)5ft (1.5m) 12s

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 cookin' for Big Ben over the next couple of weeks.

Right off the bat, I gotta be straight with ya. The first few days are a bit of a struggle. We're looking at small, weak energy for a stretch. The swell is tiny, around 2ft from the east, and the combined energy is middling to weak (361 to 315). The wind is mostly cross or cross-off, which keeps things clean enough, but the waves are just too marginal for a proper session. Friday afternoon on the 28th of August shows the best of a lean period – still only 3ft from the east with a 12-second period, and the light WSW wind (12 mph) should give us a clean little wave. It’s a beginner-friendly spot, so it’s okay for a longboard or a foily but nothing to write home about.

Saturday the 29th and Sunday the 30th are a write-off. The swell drops even more and the wind gets messy. Sunday morning (30th of August) does have a moment of glassy conditions with maybe 2ft of east swell – combined energy is low (137) – but it's a very ordinary wave for the effort.

Then we hit a rough patch. From Sunday afternoon (30th of August) right through to early September, the conditions are pretty average. The wind is constantly cross or onshore, and even though the swell starts to push above 3ft on the 1st of September, it’s coming from the south, which isn't the optimum direction for Big Ben. The south-east facing breaks will see this, but it'll be lumpy and choppy. Not worth paddling out.

The only real standout in this entire 16-day run arrives on Thursday the 10th and Friday the 11th of September. This is where it gets interesting. We see a long-period south-southwest groundswell arriving, with a period of 14 seconds and swell heights around 5ft to 6ft. The combined energy is strong (around 1385 to 1477). Now, the cautious part: it's coming from the SSW, not the optimum SE direction, so this exposure will see a good amount of energy but the shape might be a bit straighter on this beach/jetty setup. The wind is forecast to be cross-shore, not perfect but workable. The 11th of September looks the best – morning session with a light NE breeze (12 mph) should be clean enough for a go. With the swell over 5ft, it's getting a bit much for absolute beginners, but it's the best offer of the whole outlook.

The rest of the second week fades back into small, poor-quality, onshore slop. Big Ben is a tough spot to rely on in this pattern; it tends to be inconsistent, and this run proves it. You gotta wait for that one window around the 10th and 11th.

This is Rusty, signing off.

Short Range Forecast

Moderate rain (total 14mm), heaviest on Thu afternoon. Warm (max 30°C on Thu morning, min 24°C on Thu afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Sun night. Warm (max 28°C on Sun morning, min 23°C on Mon night). Wind will be generally light.

Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
1
1
2
1
0
0
1
1
0
0
0
1
2
2
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)
0.7
E
12
0.6
E
14
0.7
E
13
0.8
E
13
0.8
E
12
0.8
E
12
0.7
E
12
0.7
E
12
0.6
E
11
0.6
E
11
0.6
E
11
1.1
SW
6
0.5
E
11
0.5
S
12
0.8
S
10
0.7
S
10
1.1
S
13
1.3
S
12
1.3
S
12
Wave Graph
Metric surfscale
Energy kJ
134
146
173
212
196
180
137
132
91
89
94
77
61
65
135
94
427
513
472
Wind (km/h)
25
SW
20
WSW
20
WSW
10
SW
15
SW
10
WSW
5
N
15
ENE
15
E
5
ESE
5
S
20
SW
10
SW
15
ENE
15
ENE
10
NNE
10
NE
10
ESE
10
ESE
Wind State
cross
cross-off
cross-off
cross
cross
cross-off
glassy
cross
cross-on
glassy
glassy
cross
cross
cross
cross
cross-off
cross
on
on
High Tide
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
7:02AM1.47m
6:45PM1.54m
Low Tide
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
12:48PM0.68m
1:22AM0.41m
rain showers
thunderstorm
thunderstorm
light rain
thunderstorm
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
thunderstorm
part cloud
part cloud
part cloud
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:07
5:09
5:09
5:09
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:14
6:13
6:10
6:09
6:08
6:07
 mm
1
3
4
5
1
3
3
Temp °C
27
30
28
26
28
28
26
28
27
26
28
28
27
25
26
24
28
28
26
Feels °C
29
32
30
29
30
31
30
29
28
29
30
30
30
27
28
27
31
31
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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