Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
28.2°C
1.5° 

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 31 Aug 2026:

  • Best quality surf: Monday 7 Sep, 6AM (local time) - 10ft (3.0m), 9s period, E swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 3PM (local time) - 13ft (4.0m), 10s period, E swell with 2,946 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 3AM (local time) - 3ft (0.9m), 12s period with ESE 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 Tuesday (Sep 01) at 3AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.5m and 11s. Another secondary swell of 0.9m and 7s 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 4.0m 10s and forecast to arrive on Monday (Sep 07) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 1st Sep)3ft (0.9m) 12s
Best Surf 6AM (Mon 7th Sep)10ft (3.0m) 9s
Most Powerful 3PM (Mon 7th Sep)13ft (4.0m) 10s

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


The Lowdown

G’day, Rusty here. Let’s have a look at what’s on offer at Big Ben.

Right off the bat, it’s a slow start. There’s no surf worth paddling out for on Monday or Tuesday – the energy’s weak and the wind’s all wrong. Things start to look up a little on Wednesday morning. That’s the first real chance to get wet. The 31st of August and 1st of September are write-offs, so we’re talking a two-day gap before any kind of recommendation.

Wednesday morning, the 2nd of September, is your first real window. The swell is tiny at 3 ft from the east, but the wind is glassy – dead calm. That’s a major positive. The water temp is sitting at 83°, which is a touch warmer than normal for this time of year. Combined wave energy is moderate (217). It’s a beginner-friendly spot, so it’s perfect for a longboard or a foamy, but don’t expect much push.

The next notable moment is Sunday the 6th of September. The swell picks up to 6 ft from the east-northeast, with a short period of 8 seconds. The wind is cross-off and clean, but the energy is strong (645). The swell is a bit short-period, so it’ll be a bit lumpy, but it’s a clean session for those who don’t mind a bit of size.

Now, the standout. On Monday the 7th of September, the swell cranks. We’re looking at 10 ft from the east, with a period of 9 seconds, and the wind is cross-off and clean. The combined energy is very strong (1676). But here’s the catch – this is a beach/jetty setup, and at over 8 ft, it’s big enough for experts only. Beginners should stay well clear. The swell is too big for this break, so it’s a watch-from-the-beach day unless you’re a charger.

Tuesday the 8th of September is massive – 13 ft from the east-northeast, 10-second period, and cross-off wind. Energy is extreme (3800). Again, too big for this spot. Wednesday the 9th sees a shift in direction to the south-southeast, with a 12-second period and 10 ft swell. That’s a long-period groundswell, and it’ll be clean, but it’s still well over the 8 ft mark. Only for the brave.

The second week gets a bit messy. From the 10th onward, the swell stays solid but the wind turns onshore or cross-onshore, which will chop things up. The 11th and 12th of September have overhead waves, but the wind is from the east or southeast, so it’s not going to be clean. The water stays warm, but the quality drops off.

The best bet overall? Wednesday morning, the 2nd of September. It’s small, it’s clean, and it’s glassy. Not a classic, but a peaceful start to the day. The bigger stuff in the second week is promising but less certain – the wind and size make it a gamble for all but the most experienced.

Signing off, Rusty.

Short Range Forecast

Some drizzle, heaviest during Wed night. Warm (max 28°C on Wed morning, min 23°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 35mm), heaviest during Fri night. Warm (max 29°C on Thu morning, min 20°C on Fri night). Winds increasing (light winds from the W on Thu night, fresh winds from the NE by Sat afternoon).

Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
0
1
1
1
2
2
0
1
0
0
0
0
0
0
1
0
1
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
E
11
0.6
ESE
14
0.8
ESE
12
0.9
ESE
12
1.1
E
11
1
E
11
0.9
E
10
0.8
E
10
0.8
E
11
0.7
E
10
0.7
E
10
1.1
SE
7
1.5
ENE
6
2.1
E
6
1.8
NE
6
1.7
NE
8
1.8
ENE
8
1.9
ENE
8
1.9
ENE
8
2.1
ENE
7
2.3
ENE
8
Wave Graph
Metric surfscale
Energy kJ
59
145
208
228
295
235
171
127
149
96
94
134
134
357
263
344
466
454
430
455
671
Wind (km/h)
20
NE
20
NE
15
NE
10
NE
10
E
5
NNE
0
ESE
10
S
10
SSW
15
SSW
20
SSW
15
SW
20
NE
25
NE
25
NE
25
NNE
30
NE
25
NNE
30
NNE
30
NE
30
NNE
Wind State
cross
cross
cross
cross
cross-on
cross-off
glassy
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross-off
cross
cross-off
cross-off
cross
cross-off
High Tide
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
8:08PM1.35m
3:59PM1.32m
10:09PM1.26m
Low Tide
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
4:21AM0.52m
6:15AM0.51m
8:43PM1.26m
cloud
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
rain showers
thunderstorm
part cloud
part cloud
cloud
light rain
heavy rain
light rain
part cloud
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:09
5:11
5:11
5:11
5:13
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:08
6:07
6:06
6:04
6:02
6:01
6:00
 mm
1
1
2
29
3
Temp °C
25
26
24
27
27
24
28
28
26
29
29
27
24
23
21
23
25
22
24
25
21
Feels °C
25
26
25
29
30
26
31
31
31
32
32
30
25
22
20
21
22
19
20
21
17
  • 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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