Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 am 07 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
25.5° C
1.1° 

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 7 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 3PM (local time) - 10ft (3.0m), 11s period, E swell with cross-shore winds.
  • Most powerful swell: Friday 14 Aug, 12AM (local time) - 11ft (3.5m), 11s period, E swell with 2,654 kJ wave energy.
  • Next surfable swell (1★+): Sunday 9 Aug, 12AM (local time) - 6ft (1.9m), 14s 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 Sunday (Aug 09) at 12AM. The primary swell is predicted to be 1.9m and 14s period with a secondary swell of 1.1m and 11s. 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 3.5m 11s and forecast to arrive on Friday (Aug 14) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Monday (Aug 10) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sun 9th Aug)6ft (1.9m) 14s
Best Surf 3PM (Thu 13th Aug)10ft (3.0m) 11s
Most Powerful12AM (Fri 14th Aug)11ft (3.5m) 11s

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


The Lowdown

Alright, this is Rusty comin' at you from the beach. Let's break down what's happening at Big Ben for the next couple of weeks.

First off, this is a beach and jetty spot, good for beginners, but it's inconsistent. Water temp is 26°, which is a bit cooler than usual for this time of year.

The first few days are a bit of a wash. Friday the 7th and Saturday the 8th have some swell, like 1.4m to 2.0m, but the wind is cross-on or onshore and it's just choppy. The wave energy is moderate to strong (1590 and 1300), but it's not clean. Not worth paddling out for.

Sunday the 9th is a little better. 2.0m swell from the east with a 13-second period, which is a nice long groundswell. The wind is light cross-shore, so there's some shape. Energy is solid (1619), but it's still a bit messy. For a beginner spot, it's okay, but not amazing.

Now, Monday the 10th is where it gets interesting. Morning has a 2.3m east swell, 12-second period, and cross-offshore wind at 25 km/h. That's clean. Energy is strong (1693). This is the best we've seen. It's a bit big for total beginners, but for the average surfer, this is a solid session. The afternoon gets choppy, so hit it early.

Tuesday the 11th morning is also clean, with a 2.1m east swell and cross-offshore wind. Energy is strong (1411). Another good window. But the afternoon turns cross-shore and choppy.

Then we hit a lull. Wednesday the 12th and Thursday the 13th morning have swell, but the wind is onshore or cross, and energy drops. The 13th afternoon has a 3.0m swell, but it's flagged as too big for this break. Energy is very strong (3863), but the wave is too much for the jetty.

Friday the 14th and Saturday the 15th keep the size up around 2.5m to 3.0m, with clean cross-offshore winds. Energy is strong (2224 and 1859). These are for the experienced crew only. The 14th morning is especially clean.

The second week gets smaller. The 17th and 18th have waves around 1.2m to 1.6m, but the wind is cross-on or choppy, and energy is weak to moderate. Not great.

The real standout is Friday the 21st of August. The morning is glassy. No wind. The swell is 1.8m from the ENE with a 9-second period. Energy is moderate (594). The conditions are called "very good." For a beginner-friendly beach break, this is the cleanest, most user-friendly window in the whole forecast. The swell isn't too big, the wind is dead calm, and it's a Friday. Get on it.

The last day, Saturday the 22nd, has a 3.0m NE swell with an 11-second period, but it's flagged as too big. Energy is very strong (3164). That's for the experts.

So, if you're looking for the best bet, the morning of Friday the 21st is the pick. Clean, glassy, manageable size. The Monday and Tuesday before that are good for the more experienced, but the 21st is the one.

Rusty out.

Short Range Forecast

Light rain (total 3mm), mostly falling on Fri morning. Warm (max 29°C on Fri morning, min 23°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 30mm), heaviest during Tue night. Warm (max 28°C on Mon morning, min 22°C on Mon night). Wind will be generally light.

Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
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
1
2
2
2
4
3
2
4
3
1
4
3
1
0
0
0
3
2
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
S
12
1.8
S
12
1.6
S
11
1.4
SSW
11
1.4
ESE
13
1.9
ESE
14
2
E
13
1.9
E
13
1.8
E
12
2.3
E
12
2.4
ENE
11
2.5
ENE
11
2.1
E
12
1.7
ENE
11
1.2
ENE
10
0.9
SW
12
1
E
9
1.5
E
10
2.4
E
11
3
E
11
3.5
E
11
Wave Graph
Metric surfscale
Energy kJ
1170
887
617
513
633
1360
1421
1207
942
1480
1338
1536
1227
724
306
195
159
476
1376
2008
2654
Wind (km/h)
10
SSE
15
SSE
10
S
5
SE
10
SE
5
S
10
NE
10
E
15
NNE
25
NE
25
NE
15
NNE
20
WSW
25
SW
20
SSE
15
ENE
20
ENE
10
N
20
NE
15
NE
25
NNE
Wind State
cross-on
cross-on
cross-on
on
on
glassy
cross
cross-on
cross-off
cross-off
cross
cross-off
cross-off
cross
on
cross-on
cross
cross-off
cross
cross
cross-off
High Tide
9:44PM1.36m
4:28PM1.26m
11:10PM1.33m
4:23PM1.35m
00:59AM1.34m
4:40PM1.42m
2:16AM1.40m
5:00PM1.47m
3:13AM1.47m
5:21PM1.50m
4:00AM1.54m
5:41PM1.52m
Low Tide
6:50AM0.45m
6:32PM1.25m
8:04AM0.35m
8:47PM1.21m
8:59AM0.25m
9:34PM1.12m
9:42AM0.17m
10:08PM1.02m
10:20AM0.13m
10:38PM0.92m
10:54AM0.14m
11:08PM0.81m
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
cloud
light rain
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:52
4:52
4:54
4:54
4:56
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:31
6:30
 mm
2
1
1
21
7
1
3
5
Temp °C
29
29
26
29
28
25
29
28
24
28
28
24
26
27
25
26
27
24
26
26
24
Feels °C
32
31
30
32
30
29
30
29
26
26
26
25
26
27
26
27
28
27
27
28
25
  • 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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