Big Ben Surf Break

Lat Long: 35.12° N 140.12° E

Big Ben Surf Forecast and Surf Report

Issued: 8 pm 25 Jul 2026 (local time)

Forecast update in  hr  min

Today's Big Ben sea temperature is
26.6° 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 25 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 12PM (local time) - 2ft (0.6m), 11s period, SE swell with glassy winds.
  • Most powerful swell: Sunday 26 Jul, 6AM (local time) - 4ft (1.2m), 8s period, NE swell with 173 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 3AM (local time) - 1.5ft (0.4m), 15s 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 Sunday (Jul 26) at 3AM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.5m and 11s. Another secondary swell of 0.4m and 8s is also forecast. Another secondary swell of 0.5m and 5s 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 1.2m 8s and forecast to arrive on Sunday (Jul 26) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 4s period and expected on Monday (Jul 27) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sun 26th Jul)1.5ft (0.4m) 15s
Best Surf12PM (Sun 26th Jul)2ft (0.6m) 11s
Most Powerful 6AM (Sun 26th Jul)4ft (1.2m) 8s

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


The Lowdown

Alright folks, Rusty here. Let’s take a look at what’s cookin’ at Big Ben over the next couple of weeks.

Honestly, I gotta be straight with you—the first week is a real struggle. From Sunday the 26th of July right through to Saturday the 1st of August, we’re looking at a grim stretch of tiny, weak, messy surf. The swell energy is all over the place, but it's mostly weak to moderate, and the wind is just rubbish—cross-shore, cross-onshore, and a bit of chop. Nothing worth paddling out for. You’ll be fighting the elements for little reward. It’s a real dry spell.

But then, hold onto your board shorts, because things get proper interesting from Monday the 3rd of August. A big groundswell pushes in from the ESE. The swell energy jumps to a massive 1740 (very strong) by Monday morning, and it’s packing 6 ft at a long 16 seconds. That’s proper groundswell energy. The problem is the wind is cross-shore and cross-onshore, so it’s gonna be a bit lumpy, but we’re talking waves now.

The standout moment, without a doubt, is Tuesday the 4th of August. We’ve got a solid 10 ft of ESE swell with a 16-second period, and the combined energy is a whopping 4147 to 4711 (very strong wave energy). The wind is a gentle cross-shore, which is actually workable. BUT—and this is a big but—this is a beginner-friendly beach/jetty break, and 10 ft is way too big for beginners. This is expert territory only. The swell is predicted to be too big for this break, so it’s going to be a wild, heavy, powerful scene. If you’re an experienced local who knows the sandbanks, it could be a proper session, but it’s not for the faint-hearted.

The same goes for Wednesday the 5th through to Saturday the 9th of August. We’re looking at 13 ft to 26 ft of ESE swell with periods of 16-17 seconds. The energy numbers are off the charts—9536, 16327, even 41312 (extremely strong wave energy). This is a full-on, life-threatening swell for this spot. The wind is cross-shore or cross-onshore, but honestly, at those sizes, it’s a big-wave event if you’re brave enough. The break is simply too exposed for most. For the average surfer, it’s a no-go, but for the big-wave chargers with a jetski? This is the play.

By Monday the 10th of August, it finally drops back to a more manageable 4 ft from the E (13 seconds) with onshore wind, but the energy is still 1077 (moderate). It’s a bit of a comedown after the big week.

So, the best on offer? Tuesday the 4th of August is the pick of the litter for experts only, with that powerful 10 ft ESE groundswell. If you’re a beginner, steer clear of the whole second week—it’s way too big. The water temp is about average for the time of year, nothing weird to report.

Stay safe out there.

Rusty.

Short Range Forecast

Heavy rain (total 30mm), heaviest during Sat night. Warm (max 28°C on Sun afternoon, min 23°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 11mm), heaviest on Tue night. Warm (max 31°C on Fri morning, min 22°C on Tue night). Wind will be generally light.

Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
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
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
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
SE
10
1
ENE
8
0.8
ENE
7
0.6
SE
11
0.6
SE
10
0.6
SE
10
0.6
SE
10
1.1
ENE
8
1
E
8
0.9
ENE
8
0.8
ENE
7
0.8
ENE
7
0.7
ENE
7
0.7
ENE
8
0.6
ENE
8
0.4
SE
10
0.9
SSW
6
0.8
SSW
6
0.3
E
11
Wave Graph
Metric surfscale
Energy kJ
54
107
74
72
70
65
80
145
134
94
70
64
46
67
49
34
57
48
20
Wind (km/h)
10
N
5
ENE
10
SSE
10
SSW
20
NE
15
E
10
NE
10
ENE
5
SE
10
NNE
10
NNE
10
E
5
NE
5
SSW
20
SSW
15
SW
5
SSW
10
SSW
0
WNW
Wind State
cross-off
cross-on
cross-on
cross-on
cross
cross-on
cross
cross
on
cross-off
cross-off
cross-on
cross
cross-on
cross
cross
cross-on
cross
glassy
High Tide
00:24AM1.35m
4:36PM1.36m
1:40AM1.39m
5:02PM1.43m
2:41AM1.44m
5:26PM1.48m
3:33AM1.49m
5:50PM1.50m
4:19AM1.53m
6:13PM1.51m
5:03AM1.55m
6:35PM1.50m
Low Tide
8:39AM0.25m
9:04PM1.17m
9:26AM0.15m
9:52PM1.11m
10:08AM0.09m
10:29PM1.03m
10:45AM0.06m
11:02PM0.94m
11:20AM0.08m
11:34PM0.85m
11:52AM0.14m
00:07AM0.76m
rain showers
thunderstorm
part cloud
thunderstorm
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
rain showers
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:43
4:43
4:43
4:45
4:46
4:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:47
6:46
6:45
6:45
6:45
6:44
 mm
15
1
7
1
1
5
11
1
Temp °C
24
27
28
26
27
27
23
26
27
23
27
26
24
28
28
27
31
30
27
Feels °C
27
31
31
29
28
28
25
29
31
25
29
28
27
30
29
32
36
33
32
  • 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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