Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 2 am 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
27.3°C
0.5° 

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 22 Aug 2026:

  • Best quality surf: Monday 24 Aug, 3AM (local time) - 3ft (0.9m), 12s period, SSE swell with glassy winds.
  • Most powerful swell: Tuesday 25 Aug, 12AM (local time) - 8ft (2.4m), 14s period, SSE swell with 2,297 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 Aug, 9PM (local time) - 2.5ft (0.8m), 12s period with SSE 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 23) at 9PM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.7m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Big Ben in the next 16 days are 2.4m 14s and forecast to arrive on Tuesday (Aug 25) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Tuesday (Aug 25) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 23rd Aug)2.5ft (0.8m) 12s
Best Surf 3AM (Mon 24th Aug)3ft (0.9m) 12s
Most Powerful12AM (Tue 25th Aug)8ft (2.4m) 14s

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


The Lowdown

Alright, Rusty here. Let's get into it.

Alright, lookin' at the charts for the break, and I gotta be straight with you – the next week and a half is a bit of a tough one. There's swell on the way, but the timing and conditions are gonna be a real puzzle. The best window is a long way off, so you gotta be patient.

Let's start with what's closest. This whole first week, from Sunday the 23rd right through to the end of August, is a write-off. The swell is tiny, the wind is all over the shop, and everything is tagged as poor or marginal. You're lookin' at a solid 7 to 8 days of just not worth paddling out for. The wind is either cross or onshore, and the energy is weak. Save your energy.

We start to see a pulse of bigger swell roll in on Monday the 24th, with a very long period groundswell from the SSE. The combined energy jumps to 1463, which is a solid kick. But the wind is cross-on, and the forecast says the conditions are still marginal. The waves get bigger into Tuesday the 25th, with swell hitting 8 ft from the S and energy peaking at 2741, but again, that moderate cross-shore wind is gonna put a chop on it. These aren't the days to get excited about.

Things get a bit cleaner on Friday morning the 28th, with a cross-offshore wind and a 3 ft wave from the E, but the energy is low at 319. Still, it's a glimmer of hope.

The real standout, the one that has my heart racing a little, is way out there. We're looking at Monday the 7th of September. The forecast shows a proper 7 ft swell from the SE, and the wind is set to be a light, cross-offshore breeze from the WSW. That's the magic combo right there. The conditions are expected to be very good, and the energy is strong at 595. For a beach/jetty setup like Big Ben, a clean 7 ft wave with light offshore winds is about as good as it gets. The water temp is sitting at a nice 81°, which is pretty average for this time of year, so no surprises there.

Now, a couple of things to keep in mind. This swell has a short period of 8 seconds, so it's windswell, not a clean groundswell. It'll be a bit more crumbly and less powerful than a long-period swell, but with that offshore wind, it should still be fun. Also, Big Ben is an "inconsistent" break, so don't expect non-stop waves. You'll have to sit and wait for the sets. And because it's the best thing on offer, expect the crowds to be there, as it's a spot that "sometimes" gets busy.

The week before that, on Tuesday the 1st of September, we have a couple of promising sessions. The morning shows a 5 ft swell from the ESE with a cross breeze, and the afternoon has a clean cross-offshore wind with the same 5 ft swell. The energy is building into the 1000s, so it's a decent option. It's not the standout, but it's a solid backup.

So, to sum it up: the first week is a dud. The second week has some promise, but the one to circle on your calendar is Monday the 7th of September. That's your best bet for a clean, fun session at Big Ben.

Stay patient, and I'll see you in the water.

Rusty

Short Range Forecast

Mostly dry. Warm (max 29°C on Mon morning, min 25°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Fri morning. Warm (max 29°C on Wed morning, min 23°C on Fri night). Mainly fresh winds.

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
3
2
2
2
2
2
1
0
1
1
0
0
1
0
1
0
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)
0.8
ENE
10
0.6
SSE
13
0.8
SSE
13
1.3
SSE
14
2
SSE
16
2.4
SSE
14
2.4
S
14
2.2
S
13
1.9
S
13
1.5
SSW
12
1.3
SSW
13
1.4
S
9
0.9
SW
12
1.1
S
9
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
Wave Graph
Metric surfscale
Energy kJ
125
106
209
670
2007
2297
2103
1693
1181
589
543
318
254
198
212
190
184
139
134
94
89
Wind (km/h)
10
NE
10
E
0
N
5
S
20
SSW
20
SW
20
SW
20
SSW
20
SW
20
SW
25
SSW
25
SW
25
SW
25
SW
20
SW
20
WSW
20
NE
10
ENE
15
E
15
ESE
10
E
Wind State
cross
cross-on
glassy
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-on
cross-on
cross-on
High Tide
4:10PM1.33m
00:01AM1.29m
4:16PM1.41m
1:46AM1.34m
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
Low Tide
8:35PM1.23m
8:26AM0.35m
9:17PM1.13m
9:13AM0.27m
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
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
thunderstorm
thunderstorm
light rain
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:03
5:05
5:05
5:05
5:07
5:07
5:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:17
6:16
6:15
6:14
6:13
6:10
 mm
2
4
2
Temp °C
27
27
25
29
29
26
29
29
27
29
29
27
29
29
27
27
24
24
26
26
25
Feels °C
30
30
30
32
31
29
30
29
29
30
30
29
31
29
28
29
24
25
27
27
26
  • Map Icons:
  • Break
  • 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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