Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 pm 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
28.0°C
1.2° 

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 29 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 6AM (local time) - 3ft (0.9m), 12s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 3AM (local time) - 5.5ft (1.7m), 8s period, ENE swell with 373 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 3AM (local time) - 2ft (0.6m), 11s 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 Sunday (Aug 30) at 3AM. The primary swell is predicted to be 0.6m and 11s period with a secondary swell of 0.5m and 5s. 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 1.7m 8s and forecast to arrive on Sunday (Sep 06) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Friday (Sep 04) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sun 30th Aug)2ft (0.6m) 11s
Best Surf 6AM (Tue 1st Sep)3ft (0.9m) 12s
Most Powerful 3AM (Sun 6th Sep)5.5ft (1.7m) 8s

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


The Lowdown

G’day, Rusty here. Look, if you’re looking for a surf around here, you’ve got to be patient. Big Ben’s the only show in town, and it’s a beach/jetty setup, exposed to the east. It’s inconsistent, so you can’t just rock up any day.

The first real chance we get is on Sunday the 30th of August. Morning’s your best bet, with a 2ft E swell, period 11 seconds. The wind is cross-off from the NNE at 9 mph, which will keep things pretty clean. The combined energy is a moderate 103. It’s surfable, but very ordinary. Don’t get too excited.

Things stay flat and ordinary through the rest of August and into the start of September. Monday morning the 31st has a touch more energy (194) but the rain and cross-shore wind will make it messy. Tuesday the 1st of September sees the swell push to 3ft from the E with a 12-second period and moderate energy (465), but the wind is cross and cross-on, so still marginal. The whole first week is a write-off for anything truly good.

We’ve got a real gap here. The surf just doesn’t stack up until the second week of September. It’s a long wait.

Now, come Sunday the 6th of September, things start to change. Morning has a 6ft E swell with an 8-second period and strong energy (581). The wind is cross-off from the NNE at 12 mph, so it’ll be clean. This is a big step up but at 6ft, it’s getting solid for beginners. Still, the setup at Big Ben could handle it.

The standout window looks to be Tuesday the 8th of September morning. You’ve got a solid 8ft ESE swell, 10-second period, and very strong energy pumping in at 1602. The wind is light cross from the NE at 6 mph, keeping it glassy. This is expert territory at that size—too big for learners—but for those who can handle it, the light cross-shore wind will give you some nice, clean walls. The swell direction (ESE) is a good match for the break’s optimum SE.

The following days through to the 10th keep the energy high, with Thursday morning the 10th standing out again: a 8ft SE swell with a very long 12-second period, cross-off wind from the NNE at 22 mph, and an enormous combined energy of 3057. That’s a lot of power. Clean, but that long period can make it straight at a beach break; it might work better if the jetty offers some shape. Definitely a morning for experienced surfers only.

From the 11th onwards, the wind turns nasty and onshore, with storms and strong winds making a mess of things. The 14th of September Monday morning offers a reprieve: a 6ft SSW swell, clean cross-off wind from the NNE, and moderate energy (1224). It’s the best quality conditions in the whole forecast, but by then we’re two weeks out, so treat it as a hopeful possibility rather than a sure thing.

So to sum it up: if you want the best, circle Tuesday the 8th of September morning for the biggest, cleanest surf. Bring your big-wave board and know what you’re doing. The 10th is also promising but more of a gamble with the long-period swell. The rest is a waiting game.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Mon morning. Warm (max 28°C on Tue morning, min 21°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Thu night. Warm (max 29°C on Wed afternoon, min 22°C on Thu night). Wind will be generally light.

Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
1
0
0
1
1
0
2
1
0
0
1
0
0
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
E
11
0.5
E
11
0.5
E
12
0.5
E
11
0.4
ESE
14
0.6
ESE
14
0.8
ESE
12
1
E
12
1
E
11
0.9
E
11
0.8
E
10
1
ESE
7
0.9
E
12
0.8
E
11
0.7
E
10
1.2
S
6
1.3
ENE
6
1.2
ENE
7
1.4
ENE
6
Wave Graph
Metric surfscale
Energy kJ
89
66
67
61
68
145
208
284
251
191
138
105
229
149
106
106
131
124
165
Wind (km/h)
15
N
15
NNE
10
ENE
10
NNE
15
NE
15
ENE
10
NE
10
NE
10
E
10
NNE
5
ENE
10
S
15
SSW
15
SW
20
SSW
25
NE
15
NE
15
ENE
20
NE
Wind State
cross-off
cross-off
cross
cross-off
cross
cross-on
cross
cross
cross-on
cross-off
cross
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross
High Tide
5:42AM1.60m
6:06PM1.55m
6:21AM1.55m
6:26PM1.55m
7:02AM1.47m
6:45PM1.54m
7:47AM1.35m
7:06PM1.51m
8:45AM1.23m
7:27PM1.48m
10:29AM1.12m
7:48PM1.43m
Low Tide
11:40PM0.54m
11:57AM0.41m
00:11AM0.46m
12:23PM0.54m
00:45AM0.42m
12:48PM0.68m
1:22AM0.41m
1:09PM0.82m
2:05AM0.43m
1:26PM0.96m
3:00AM0.47m
1:21PM1.08m
cloud
part cloud
cloud
cloud
rain showers
rain showers
part cloud
part cloud
clear
clear
clear
part cloud
rain showers
rain showers
part cloud
mod rain
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:09
5:09
5:11
5:11
5:11
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:10
6:09
6:08
6:07
6:06
6:04
6:02
 mm
2
1
2
1
9
Temp °C
22
26
26
24
26
27
25
28
28
25
28
29
27
26
28
24
24
25
24
Feels °C
24
28
29
27
28
30
28
31
32
29
32
33
32
29
30
26
25
25
24
  • 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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