Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
27.7° 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 5 Aug 2026:

  • Best quality surf: Wednesday 5 Aug, 3PM (local time) - 13ft (4.0m), 14s period, SE swell with cross-shore winds.
  • Most powerful swell: Wednesday 5 Aug, 3PM (local time) - 13ft (4.0m), 14s period, SE swell with 5,810 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 5 Aug, 3PM (local time) - 13ft (4.0m), 14s period with SE 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 Wednesday (Aug 05) at 3PM. The primary swell is predicted to be 4.0m and 14s period with a secondary swell of 0.1m and 18s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Big Ben in the next 16 days are 4.0m 14s and forecast to arrive on Wednesday (Aug 05) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Monday (Aug 10) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Wed 5th Aug)13ft (4.0m) 14s
Best Surf 3PM (Wed 5th Aug)13ft (4.0m) 14s
Most Powerful 3PM (Wed 5th Aug)13ft (4.0m) 14s

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


The Lowdown

G’day, Rusty here. Let’s cut straight to it. The next couple of weeks are a bit of a mixed bag for our stretch of coast. The main standout is Big Ben, but honestly, the opening days are going to be a challenge for most of us. The first few days of the window are firing with a big, powerful groundswell, but it’s going to be too much for the average punter. We’ve got a solid SE swell pushing through on Wednesday the 5th, with wave heights around 13ft and a long 15-second period. The combined energy is a strong 7412, and the water temp is a touch warmer than normal at 82°. That’s proper, heavy stuff. The wind is cross-shore from the NE at 16 mph, which will put some texture on it, but the main issue is the size. This is expert-only territory. The swell direction from the SE is right on the money for this spot, but that size is just too much for the jetty to handle for most of us. The afternoon stays similar, with 13ft and ENE wind, still too big.

Thursday the 6th sees the swell back off a bit to 8ft, but the wind swings cross-on and it gets choppy. The energy drops to 2525, and the period shortens to 13 seconds. It’s a messy, marginal day. Friday the 7th is more of the same, onshore wind, 7ft, and the energy is fading. Saturday and Sunday are still pretty average, with smaller surf in the 6ft range but poor conditions. There’s a real lull in quality here.

Now, here’s where things get interesting. The standout window is Monday the 10th and Tuesday the 11th. The swell drops back to a more manageable size, but the kicker is the wind. We get a fresh cross-offshore breeze from the NNE, which is going to groom those faces to perfection. Monday morning has 8ft of ENE swell with a 12-second period and a combined energy of 2308. The conditions are clean. By Monday afternoon, it’s pushing 10ft, and the energy jumps to 3068. Tuesday morning sees the biggest of this pulse at 10ft with an 11-second period and a strong 4326 energy reading. The wind is still cross-off and clean. This is the pick of the bunch. It’s still big, so it’s for experienced surfers only, but the conditions are going to be firing. The swell direction is ENE, which is decent, but the clean, offshore wind is what makes it special. This is the one to get excited about.

After that, the middle of the month gets messy. Wednesday the 12th is still rideable but the wind gets strong. Thursday through to the 17th sees the swell drop off significantly, with a lot of poor, choppy days and the energy falling to under 1000. It’s a proper flat spell. The wind is all over the shop, and there are a few storm risks around. This is a good time to wax the longboard and wait.

The final push comes on Tuesday the 19th and Wednesday the 20th. Tuesday the 19th brings a new, solid S swell at 10ft with a 14-second period and a strong energy of 4224. But the wind is onshore and it’s raining, so it’s going to be messy. Wednesday the 20th is a better bet. The swell is holding at 8ft with a 13-second period, the energy is 3497, and the wind is light and cross-shore from the SSW. That’s a much cleaner look, and the conditions should be far better. The water is still warm. This is a promising end to the window, but it’s more than a week away, so I’d keep an eye on it.

So, to break it down: the big, clean days on the 10th and 11th are your top picks. The 20th looks like a solid back-up. The rest is either too big, too small, or too messy. Big Ben is a spot that’s exposed, and it’s inconsistent, so when it lines up, you’ve got to go. But remember, if it’s over 8ft, it’s expert territory only. If you’re a beginner, sit this one out. The crowds are sometimes an issue here, but on the clean days, it’ll be worth the fight.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 29°C on Thu morning, min 24°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Mon night. Warm (max 28°C on Sat morning, min 22°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the NNE by Mon night).

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
!
!
!
2
2
3
2
2
3
2
2
4
2
0
3
2
!
!
!
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
SE
15
4
SE
14
3
SSE
13
2.5
SSE
13
2.4
S
12
2.4
S
13
2.2
S
13
2
SSW
13
1.8
SSW
13
1.8
SSW
13
1.7
SSW
13
1.8
ESE
13
1.9
ESE
14
2
E
13
2
E
13
2.4
E
12
3
ENE
12
3.5
ENE
12
3
ENE
11
2.5
ENE
11
2.2
E
11
Wave Graph
Metric surfscale
Energy kJ
6936
5810
2875
2090
1707
1971
1736
1339
1162
1025
917
1057
1470
1440
1308
1707
2644
3549
2351
1403
1191
Wind (km/h)
25
NE
25
ENE
10
NE
15
ENE
15
ESE
10
SE
10
SE
15
SE
5
SE
10
E
15
ESE
5
ENE
15
ENE
20
ENE
20
NNE
30
NNE
30
NNE
30
NNE
35
NNE
30
NNE
35
N
Wind State
cross
cross
cross
cross-on
cross-on
on
on
on
on
cross-on
on
glassy
cross
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
9:01AM1.18m
8:31PM1.43m
10:40AM1.08m
9:01PM1.40m
9:44PM1.36m
4:28PM1.26m
11:10PM1.33m
4:23PM1.35m
00:59AM1.34m
4:40PM1.42m
2:16AM1.40m
5:00PM1.47m
Low Tide
2:13PM0.83m
3:50AM0.55m
2:28PM0.99m
5:14AM0.52m
6:50AM0.45m
6:32PM1.25m
8:04AM0.35m
8:47PM1.21m
8:59AM0.25m
9:34PM1.12m
9:42AM0.17m
10:08PM1.02m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
light rain
rain showers
rain showers
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:50
4:50
4:52
4:52
4:52
4:54
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:38
6:37
6:37
6:36
6:35
6:34
6:32
 mm
2
1
1
3
Temp °C
27
27
25
29
29
26
29
28
25
28
28
24
28
27
24
27
26
24
26
25
24
Feels °C
27
28
29
32
32
30
32
30
28
30
30
27
28
27
24
24
24
22
24
24
21
  • 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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