Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 22 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, 9AM (local time) - 3.5ft (1.1m), 18s period, SSE swell with glassy winds.
  • Most powerful swell: Monday 24 Aug, 9PM (local time) - 8ft (2.5m), 15s period, SSE swell with 2,612 kJ wave energy.
  • Next surfable swell (1★+): Saturday 22 Aug, 9PM (local time) - 3.5ft (1.0m), 10s 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 Saturday (Aug 22) at 9PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.4m 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 2.5m 15s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Friday (Aug 28) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sat 22nd Aug)3.5ft (1.0m) 10s
Best Surf 9AM (Mon 24th Aug)3.5ft (1.1m) 18s
Most Powerful 9PM (Mon 24th Aug)8ft (2.5m) 15s

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


The Lowdown

G’day, I’m Rusty. Let’s talk about what’s comin’ up at Big Ben.

Alright, so we’ve got a mixed bag on the cards. There’s no surf worth paddlin’ out for right this second, so we’re looking at a bit of a wait. The first real chance of something decent doesn’t show up until the morning of Monday the 24th of August, and even then we’re just getting a window of real quality before the wind and swell get a bit unruly.

The standout of the whole outlook is without a doubt the Monday the 24th of August, early. We’ve got a solid 4 ft of south-south-east groundswell rolling in, and the period – 18 seconds – is that long, powerful groundswell you feel in your bones. This is proper energy. The best part? Glassy conditions. Dead calm, light air, no wind at all. That’s a dream for a clean face, and it’s an exposed beach and jetty setup so it’ll catch it well. For more experienced surfers, this is the one to circle. Keep in mind though, with a period that long, the sets can be a bit fat and straight on a beach break, but with that low tide and glass, you can make it work.

The water temp is sittin’ at a sultry 81°, which is about average for the time of year, so a summer steamer isn’t needed.

Now, the rest of the period has moments, but nothing that hits that same high. The afternoon of that same day gets a bump up to 5 ft but the cross-shore wind picks up and turns it to chop. Tuesday the 25th has some swell – 7 ft to 8 ft from the south – but the cross-shore winds are gonna mess with the shape.

After that, we hit a rough patch. Wednesday through to the end of August is mostly small and messy with cross-shore winds and poor conditions. There’s a little window on Saturday the 29th and Sunday the 30th of August with a clean cross-offshore breeze, but the swell drops to 3 ft at best. Not much push.

Then we move into the first week of September. Monday the 31st of August through to Wednesday the 2nd of September has some push – 4 ft to 6 ft – but it’s mostly onshore or cross-onshore winds, and the period drops off, making it less appealing.

Now, there’s a big one to watch for the more experienced crew. Friday the 4th of September afternoon shows a big southeast groundswell: 10 ft at 13 seconds. That’s a lot of water movin’. However, the forecaster has flagged that this is too big for this break. It’s a beach and jetty setup, and with the onshore-chop, it will be a washing machine. Only for experts and honestly, the conditions will be rough. Saturday the 5th continues with similar oversized swell but again, it’s messy.

We’ve got a final pulse on Sunday the 6th of September: 8 ft from the south-south-east with a very long 14-second period. Again, the wind is onshore and choppy, so it’s not a clean day for Big Ben.

If you’re after the best of the best, that Monday the 24th of August morning is your golden hour. Everything else is waiting on a better wind window.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Mon morning. Warm (max 28°C on Sat morning, min 24°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Thu afternoon. Warm (max 29°C on Tue morning, min 23°C on Thu night). Wind will be generally light.

Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
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
1
0
1
2
4
2
2
2
2
3
1
0
1
1
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)
0.9
E
10
1
E
11
1
E
10
0.8
ENE
10
0.6
SSE
13
0.8
SSE
13
1.1
SSE
18
1.6
SSE
16
2.5
SSE
14
2
S
13
2.3
S
14
2
S
13
1.5
SSW
13
1.3
SSW
13
0.9
SSW
12
1.2
S
9
1.4
SSW
10
0.9
E
13
0.9
E
13
0.9
E
13
0.8
E
12
Wave Graph
Metric surfscale
Energy kJ
175
231
198
125
106
209
790
1271
2488
1400
1979
1380
660
543
247
241
418
277
260
263
187
Wind (km/h)
15
SW
10
SW
5
SW
10
ENE
10
E
5
ENE
5
E
20
SW
15
SW
15
SW
20
SW
15
SSW
20
SSW
25
SSW
20
SSW
20
SW
15
SSW
10
NE
10
ENE
10
NE
15
NNE
Wind State
cross
cross
cross
cross
cross-on
glassy
glassy
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
High Tide
9:26PM1.33m
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
Low Tide
7:19AM0.44m
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
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:03
5:03
5:05
5:05
5:05
5:07
5:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:20
6:19
6:17
6:16
6:15
6:14
6:13
 mm
2
2
3
1
2
2
1
2
1
Temp °C
28
28
26
26
26
25
28
28
26
29
29
26
29
29
27
29
29
25
25
24
23
Feels °C
30
31
31
29
30
29
32
30
29
31
30
29
30
31
29
31
31
29
28
28
25
  • 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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