Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
28.1°C
1.4° 

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 28 Aug 2026:

  • Best quality surf: Friday 28 Aug, 9PM (local time) - 4.5ft (1.3m), 7s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 3 Sep, 12PM (local time) - 5ft (1.6m), 11s period, S swell with 573 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 9PM (local time) - 4.5ft (1.3m), 7s 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 (Aug 28) at 9PM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 1.1m and 7s. Another secondary swell of 0.7m and 12s 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 1.6m 11s and forecast to arrive on Thursday (Sep 03) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 5s period and expected on Sunday (Aug 30) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Fri 28th Aug)4.5ft (1.3m) 7s
Best Surf 9PM (Fri 28th Aug)4.5ft (1.3m) 7s
Most Powerful12PM (Thu 3rd Sep)5ft (1.6m) 11s

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


The Lowdown

G’day, Rusty here. I’ve had a good look at what’s coming down the line for Big Ben, and I’ve gotta be straight with you – this is a tough block of surf. We’ve got a serious run of poor conditions for the next couple of weeks, but there is one absolute ripper of a window that pops up right at the tail end of the forecast. For now, it’s all about waiting.

We kick off on Friday the 28th of August with some size – 5.9ft of short-period, weak SW swell – but the wind is a messy cross-off at 22 mph. The water’s a touch warmer than normal for this time of year at 82.6°F, but that won’t matter because the surf looks lacklustre. The combined energy is moderate (465). There’s nothing for it on Saturday or Sunday either – we drop to tiny 2.0ft and 1.6ft with poor winds, getting a few light breezes on Sunday morning but the swell is barely a pulse. That pattern of small, weak easterly windswell with cross and cross-on winds drags on through Monday, Tuesday, and Wednesday of the first week. There’s a brief uptick on Tuesday the 1st of September with a 3.3ft to 3.9ft easterly swell and some light onshore wind, but the energy is moderate (386-544) and the surf is just marginal at best. Honestly, it’s a write-off for paddle surfing through this whole patch.

We slide into the second week, and it doesn’t get much better. Thursday the 3rd of September shows a 3.9ft SSW swell with moderate energy (565) but stiff cross-onshore winds. Friday the 4th is a total washout with 22 mph cross winds. The weekend of the 5th and 6th offers nothing special – slight hope on the Saturday afternoon with a 4.6ft easterly pulse and lighter cross-off wind, but the period is a weak 6 seconds. The combined energy (281) is weak. It’s just bleak.

Now, hang on – here’s where it gets interesting. The real story is Thursday the 10th of September through to Saturday the 12th. Thursday morning delivers a big jump – 9.8ft of SSE groundswell with a long period (14 seconds) and light cross-off wind. But, and this is a big but, that is way too much for a beginner spot like Big Ben. The combined energy is strong (3572). That morning is for experts only. The standout session, without a doubt, is Friday the 11th of September. On Friday morning, we’ve got 8.2ft of clean, long-period SSE groundswell (13 seconds) and glassy conditions – yes, glassy! The wind is barely a whisper from the SSE at 3 mph. The combined energy is strong (2633). This is excellent surf for experienced surfers. The swell is big, so it’s not for the groms, but for anyone with a bit of paddle fitness, this will be the best wave we’ve seen in the entire outlook. The swell direction (SSE) lines up nicely with the optimum. Keep in mind that a long-period groundswell like this can break a bit straight on a beach break, but at Big Ben being a jetty, it should be fine. Crowds are possible here. Saturday morning the 12th holds 8.2ft with cross winds, so the quality slips, but the swell energy is still strong (2269).

Overall, it’s a long, grim wait with a fantastic payoff for those who can get out on Friday the 11th of September. Everything before that is just watching the forecast and hoping.

Short Range Forecast

Light rain (total 2mm), mostly falling on Fri night. Warm (max 30°C on Fri afternoon, min 22°C on Sat night). Winds decreasing (fresh winds from the SW on Fri morning, calm by Sun night).

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Wed morning. Warm (max 29°C on Mon morning, min 26°C on Mon night). Wind will be generally light.

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
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
1
2
0
0
1
1
0
1
0
0
1
0
1
1
0
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)
1.8
SW
6
0.7
E
12
0.7
E
12
0.6
E
12
0.6
E
11
0.5
E
11
0.5
E
11
0.5
E
12
0.5
E
11
0.5
E
11
0.5
E
11
0.6
ESE
12
1
E
11
1.2
E
12
1.2
E
11
0.9
E
11
0.9
SSW
10
1
SSW
10
1.2
SSW
11
1.6
S
11
1.3
S
7
Wave Graph
Metric surfscale
Energy kJ
228
145
134
98
91
63
66
67
61
59
58
115
260
383
351
195
180
210
319
566
152
Wind (km/h)
35
SW
20
W
5
NNE
20
ENE
20
NE
10
NNE
10
NNW
5
SW
5
W
10
SW
20
SSW
10
SSW
10
SSE
15
SSE
15
SSE
20
S
20
SSW
20
SSW
20
SSW
25
SSW
35
SSW
Wind State
cross-off
cross-off
cross-off
cross-on
cross
cross-off
cross-off
cross
glassy
cross
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
High Tide
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
7:47AM1.35m
7:06PM1.51m
8:45AM1.23m
7:27PM1.48m
Low Tide
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
1:09PM0.82m
2:05AM0.43m
1:26PM0.96m
3:00AM0.47m
cloud
cloud
light rain
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
thunderstorm
clear
thunderstorm
thunderstorm
clear
clear
clear
clear
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:09
5:09
5:09
5:11
5:11
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:13
6:10
6:09
6:08
6:07
6:06
6:04
 mm
2
2
3
3
3
Temp °C
28
30
26
25
23
22
25
26
25
29
29
26
29
29
26
29
29
27
29
29
27
Feels °C
28
30
30
25
22
22
28
29
30
31
30
30
32
32
29
30
31
30
30
30
28
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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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