
Surf Forecasts:
Big Ben surf forecast from 1 Aug 2026:
- Best quality surf: Monday 3 Aug, 9PM (local time) - 10ft (3.0m), 17s period, SE swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 12PM (local time) - 15ft (4.5m), 16s period, SSE swell with 9,408 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 12AM (local time) - 2.5ft (0.7m), 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 (Aug 02) at 12AM. The primary swell is predicted to be 0.7m and 15s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.9m and 6s is also forecast. 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 4.5m 16s and forecast to arrive on Wednesday (Aug 05) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 2nd Aug) | 2.5ft (0.7m) 15s |
| Best Surf | 9PM (Mon 3rd Aug) | 10ft (3.0m) 17s |
| Most Powerful | 12PM (Wed 5th Aug) | 15ft (4.5m) 16s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get straight into it for Big Ben.
Right now, the water is sitting at a warm 81°, which is pretty much spot-on for this time of year. The outlook starts off pretty sleepy, but things pick up.
We kick off Saturday afternoon, August 1st, with a tiny 2 ft SE swell. The energy is weak (201), and with a cross-shore wind, it’s a bit of a washout. Not worth paddling out for.
Sunday the 2nd sees a bit more life. The morning brings a 5 ft ESE swell with a long 16-second period, and the energy jumps to a moderate 1050. The wind is light and cross-shore, so it’s not terrible, but it’s still a bit lumpy. The afternoon bumps up to 5 ft, but the wind picks up and creates a cross-chop.
Monday the 3rd has the swell building, but the wind is a cross-shore moderate breeze. The morning is 7 ft from the SE with a 16-second period and strong energy (2693), but it’s bumpy. The afternoon gets bigger at 8 ft with a 17-second period, energy is very strong (3654), but again, cross-shore chop.
Now, here’s where it gets interesting, but only for the brave. From Tuesday the 4th through Thursday the 6th, we get a proper pulse of big swell. However, this is a beach and jetty setup, and the swell is pumping too hard. Tuesday morning sees 12 ft SE swell with a 16-second period and massive energy (6372). The wind is a fresh cross-shore, creating lumpy conditions. This is strictly for experienced surfers only, and honestly, the setup looks more interesting for kite surfing than paddle surfing at this size. The same goes for Wednesday and Thursday, with the swell peaking at 15 ft on Wednesday afternoon and energy hitting 9344. It’s simply too big and messy for this break.
From Friday the 7th until Sunday the 16th, the surf drops back but never really cleans up. The swell stays between 5 ft and 8 ft, but the wind is consistently cross-shore or cross-onshore, keeping the surface choppy and lumpy. There are a few moments, like Monday morning the 10th with a 8 ft E swell and clean cross-offshore wind, but the energy is still strong and the period is a bit short at 13 seconds. The overall takeaway is that the surf is marginal for the vast majority of the forecast.
The standout moment, if you can call it that, is probably Sunday morning, August 2nd, with a 5 ft ESE swell, a long 16-second period, and light cross-shore winds. It’s not perfect, but it’s the closest to clean the whole window gets, and the energy is moderate. It’s a beginner-friendly size, but the inconsistent nature of the break means you might have to wait for a set. For a more experienced surfer, Monday morning, August 10th offers a clean 8 ft E swell with cross-offshore winds, but the 13-second period makes it a bit less powerful than it looks.
So, we’ve got a big swell window early on that’s too big, followed by a long stretch of so-so conditions. Not the best 16 days, but the chance of a clean 8 ft E swell on the 10th is worth keeping an eye on.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sat afternoon, min 22°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Warm (max 29°C on Thu morning, min 22°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | SE 16 | ESE 18 | ESE 16 | ESE 15 | ESE 15 | SE 16 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 15 | S 15 | S 15 | S 15 | S 15 | SSW 15 | SSW 15 |
Wave Graph | ||||||||||||||||||||
124 | 217 | 957 | 936 | 1368 | 2349 | 3442 | 4498 | 5865 | 7230 | 8174 | 8407 | 9344 | 6831 | 5912 | 5380 | 3935 | 3282 | 3311 | 2616 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:57PM1.49m | 6:27AM1.49m | 7:20PM1.48m | 7:11AM1.41m | 7:42PM1.47m | 7:59AM1.30m | 8:06PM1.45m | 9:01AM1.18m | 8:31PM1.43m | 10:40AM1.08m | 9:01PM1.40m | 9:44PM1.36m | ||||||||
Low Tide | 00:41AM0.69m | 12:53PM0.36m | 1:18AM0.62m | 1:22PM0.51m | 1:59AM0.58m | 1:49PM0.67m | 2:48AM0.56m | 2:13PM0.83m | 3:50AM0.55m | 2:28PM0.99m | 5:14AM0.52m | |||||||||
— | — | 4:48 | — | — | 4:48 | — | — | 4:50 | — | — | 4:50 | — | — | 4:50 | — | — | 4:52 | — | — | |
6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 1 | — | — | — |
Temp °C | 30 | 27 | 29 | 28 | 24 | 25 | 26 | 23 | 26 | 26 | 23 | 26 | 27 | 25 | 29 | 29 | 26 | 29 | 28 | 25 |
Feels °C | 33 | 31 | 32 | 30 | 25 | 25 | 26 | 22 | 24 | 24 | 22 | 27 | 28 | 28 | 31 | 32 | 30 | 31 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SE 16 | SE 15 | ESE 16 | ESE 15 | ESE 15 | SE 16 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 15 | S 15 | S 15 | S 15 | S 15 | SSW 15 | SSW 15 |
124 | 217 | 957 | 936 | 1368 | 2349 | 3442 | 4498 | 5865 | 7230 | 8174 | 8407 | 9344 | 6831 | 5912 | 5380 | 3935 | 3282 | 3311 | 2616 | |
Swell 2 Height (m) Direction Period (s) | ESE 11 | SSW 6 | SSW 5 | ENE 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | ENE 13 | ENE 18 | — | E 10 | E 10 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
39 | 25 | 11 | 72 | 109 | 98 | 98 | 96 | 93 | 87 | 57 | 31 | — | 434 | 416 | 346 | 300 | 245 | 245 | 307 | |
Swell 3 Height (m) Direction Period (s) | SE 8 | ESE 18 | ENE 16 | SW 6 | SW 6 | SE 21 | — | — | — | — | — | — | — | ENE 17 | ENE 16 | ENE 16 | ENE 15 | ENE 15 | ENE 15 | ENE 14 |
11 | 209 | 82 | 8 | 5 | 162 | — | — | — | — | — | — | — | 27 | 25 | 51 | 46 | 42 | 42 | 41 | |
Wind waves Height (m) Direction Period (s) | SSW 6 | SW 6 | — | NE 3 | NE 5 | ENE 6 | ENE 6 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 9 | — | — | — | — | — | — | — | — |
27 | 49 | — | 8 | 62 | 84 | 114 | 294 | 414 | 410 | 237 | 321 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 30 | 0 | 6 | 48 | 29 | 184 | 184 | 184 | 184 | 95 | 63 | 595 | 29 | 29 | 29 | 81 | 29 | 29 | 81 | 29 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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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.











