Big Ben Surf Break

Big Ben Surf Forecast and Surf Report

Lat Long: 35.12° N 140.12° E

Issued: 8 pm 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
22.9° C

1.2°C colder than average for this time of year

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 4 Jul 2026:

  • Best quality surf: Saturday 11 Jul, 12AM (local time) - 10ft (3.0m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 11 Jul, 12AM (local time) - 10ft (3.0m), 17s period, SSW swell with 4,494 kJ wave energy.
  • Next surfable swell (1★+): Thursday 9 Jul, 12AM (local time) - 8ft (2.4m), 15s 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 Thursday (Jul 09) at 12AM. The primary swell is predicted to be 2.4m and 15s period with a secondary swell of 1.5m and 8s. Another secondary swell of 1.8m and 8s 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 3.0m 17s and forecast to arrive on Saturday (Jul 11) 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 0.9m 4s period and expected on Tuesday (Jul 07) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 9th Jul)8ft (2.4m) 15s
Best Surf12AM (Sat 11th Jul)10ft (3.0m) 17s
Most Powerful12AM (Sat 11th Jul)10ft (3.0m) 17s

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


Updates in  hr  min  s Forecast update imminent

Hey, Rusty here. Let’s break down what Big Ben’s got for us. Got to be honest, the start of this forecast is a bit of a dud – a long stretch of poor conditions before anything decent shows up. Don't rush to the water on the first few days.

Sunday the 5th is a total no-go. There’s a weak 2ft easterly windswell with a short 8-second period, blown out by an onshore southeast breeze. The wave energy is barely a whisper at 72. It’s just poor.

Monday the 6th isn’t any better. The swell pushes up to 6ft but it’s still coming from the southeast with a short, weak 7-second period. Moderate cross-onshore winds have it all chopped up. The energy is moving into the moderate range (570 - 656), but it’s messy and unrideable.

Alright, here’s the turning point. Tuesday the 7th morning. The wind switches to a cross-offshore NNE breeze, cleaning the surface right up. The swell is a solid 5ft but the period jumps to a very long 15 seconds – real groundswell. The energy is strong at 1210. This morning window is the first real standout. That long period at a beach/jetty break like this can make the waves a bit straight, but with the clean conditions, it’ll be worth a look for the experienced crew.

Now, the absolute best session of the entire run is Thursday morning July 9th. We’re looking at a powerful 8ft S swell riding a 15-second period, with a very strong wave energy of 3020. The wind is a gentle cross-offshore breeze from the NE, keeping the face glassy. The report says it’s excellent for experienced surfers. This is expert-only size, well over 8ft, so know your limits. The mornings are definitely the key here, as the winds shift and introduce some chop in the afternoons.

The swell holds at around 8ft through Friday the 10th and Saturday the 11th, with periods staying in that juicy 16 to 17-second range. The energy is huge, pushing up to 3965. The wind stays light, making for some powerful, clean-ish waves, though the direction isn't a perfect match for the break.

After that Sunday the 12th, it all starts to fade. The swell drops, the energy backs off, and by Monday the 13th we’re sliding back into small, weak surf and onshore breezes. The following week looks flat and poor.

So, to cut through it all: the first few days are a wash. The one to circle on the calendar is Thursday morning July 9th. That’s the big one. The Wednesday morning July 8th with clean 8ft waves is a close second. Get out there when it’s good because the long flat spell after is a real bummer.

See you in the lineup.

Rusty.

Short Range Forecast

Heavy rain (total 29mm), heaviest during Mon night. Warm (max 24°C on Sun morning, min 21°C on Sun night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Fri morning, min 19°C on Tue night). Wind will be generally light.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Sat
11
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
3
1
4
4
3
5
5
2
4
4
3
!
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
E
8
0.5
E
8
1.2
SSE
5
1.5
SE
6
1.9
SE
7
1.9
SE
7
0.8
SSE
15
1.5
SSE
15
1.8
SSE
16
1.7
SSE
15
2.4
SSE
16
2.5
SSE
16
2.4
SSE
15
2.4
S
15
2.3
S
15
2.4
S
15
2.5
S
16
2.5
SSW
16
3
SSW
17
2.5
SSW
17
2.5
SSW
16
Wave Graph
Metric surfscale
Energy kJ
46
29
78
164
315
325
279
1028
1629
1258
2977
2883
2576
2525
2465
2525
3222
3731
4494
3786
3386
Wind (km/h)
15
S
15
SE
20
SE
15
ESE
20
E
20
E
25
NE
25
NNE
30
NE
20
NNE
20
NNE
20
NE
15
NNE
15
NE
20
ENE
10
NNE
15
NE
15
ENE
5
NNE
10
ENE
10
ESE
Wind State
cross-on
on
on
on
cross-on
cross-on
cross
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-on
cross-off
cross
cross-on
cross-off
cross
on
High Tide
7:15AM1.31m
8:44PM1.37m
8:13AM1.21m
9:15PM1.35m
9:28AM1.11m
9:50PM1.34m
11:16AM1.05m
10:30PM1.34m
1:37PM1.08m
11:19PM1.34m
3:18PM1.19m
00:16AM1.35m
4:12PM1.29m
Low Tide
1:51AM0.82m
1:55PM0.38m
2:43AM0.76m
2:32PM0.54m
3:44AM0.69m
3:11PM0.71m
4:55AM0.61m
3:58PM0.87m
6:12AM0.51m
5:09PM1.01m
7:21AM0.39m
6:54PM1.11m
8:19AM0.26m
mod rain
light rain
light rain
cloud
light rain
light rain
heavy rain
rain showers
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:30
4:30
4:31
4:31
4:31
4:31
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:57
6:57
6:57
6:55
6:55
6:55
6:55
 mm
7
1
1
3
4
11
1
1
Temp °C
23
24
23
22
21
22
22
23
21
20
24
24
20
25
25
21
26
26
23
27
26
Feels °C
25
24
23
22
21
22
22
21
19
19
22
23
20
24
25
22
27
27
25
29
28
Swell 1
Height (m)
Direction
Period (s)
0.6
E
8
0.5
E
8
0.4
ENE
8
0.4
SE
14
0.7
SE
14
0.7
SE
12
1.7
ESE
7
1.5
SSE
15
1.8
SSE
16
2
ENE
8
2.4
SSE
16
2.5
SSE
16
2.4
SSE
15
2.4
S
15
2.3
S
15
2.4
S
15
2.5
S
16
2.5
SSW
16
3
SSW
17
2.5
SSW
17
2.5
SSW
16
Energy kJ
46
29
19
54
179
151
263
1028
1629
551
2977
2883
2576
2525
2465
2525
3222
3731
4494
3786
3386
Swell 2
Height (m)
Direction
Period (s)
0.3
SE
9
0.3
ESE
10
0.4
ESE
10
0.4
ESE
10
0.4
SE
17
0.6
SSE
16
0.8
SSE
15
1.3
ESE
7
0.7
SSE
20
1.7
SSE
15
1.8
ENE
8
1.6
S
17
1.5
ENE
8
1.3
ENE
8
0.9
SSW
18
1.1
E
8
1
E
8
1
E
8
0.9
E
8
0.9
E
9
0.9
E
9
Energy kJ
13
20
35
37
76
169
279
177
428
1258
468
1405
273
218
552
149
120
117
102
120
119
Swell 3
Height (m)
Direction
Period (s)
0.3
NE
10
0.2
SSE
10
0.2
SSE
10
0.3
ENE
8
0.2
WSW
7
0.3
ENE
8
0.8
SE
12
0.3
SW
6
0.4
SW
7
1.4
SSE
18
0.7
S
20
1.1
E
8
1
E
8
0.1
SE
15
Energy kJ
15
9
9
11
4
11
158
5
15
1175
377
145
117
8
Wind waves
Height (m)
Direction
Period (s)
0.7
S
4
0.6
SSE
4
1.2
SSE
5
1.5
SE
6
1.9
SE
7
1.9
SE
7
0.4
SW
6
0.6
NW
3
1.5
NE
7
2.5
NE
8
2.3
NE
8
1.7
ENE
8
1.8
ENE
8
1.5
ENE
8
1.2
ENE
8
Energy kJ
17
14
78
164
315
325
10
8
189
1002
716
394
412
277
178
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
3
3
4
5
5
4
5
5
4
4
5
4
5
5
4
Distance (km)
30
30
229
48
50
63
35
184
184
22
35
29
0
0
29
0
6
29
18
6
29
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
3
5
5
4
5
5
4
5
5
5
6
6
6
Best forecast wave conditions in Japan
Rating
(10 max)
2
1
1
1
2
3
3
3
4
5
5
5
7
5
6
5
5
9
8
6
6
Header Global
Rating
(10 max)
4
5
9
7
5
5
8
7
5
5
9
7
9
5
7
5
5
4
8
4
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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