
Surf Forecasts:
Big Ben surf forecast from 28 Jul 2026:
- Best quality surf: Monday 3 Aug, 6PM (local time) - 10ft (3.0m), 18s period, SE swell with cross-shore winds.
- Most powerful swell: Wednesday 5 Aug, 3AM (local time) - 18ft (5.5m), 17s period, SE swell with 17,054 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 3AM (local time) - 4.5ft (1.3m), 6s period with SSW 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 (Jul 29) at 3AM. The primary swell is predicted to be 1.3m and 6s period with a secondary swell of 0.5m and 10s. Another secondary swell of 0.4m and 7s 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 5.5m 17s and forecast to arrive on Wednesday (Aug 05) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Wednesday (Aug 05) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 29th Jul) | 4.5ft (1.3m) 6s |
| Best Surf | 6PM (Mon 3rd Aug) | 10ft (3.0m) 18s |
| Most Powerful | 3AM (Wed 5th Aug) | 18ft (5.5m) 17s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – it’s a slow start and a tricky run ahead.
We’re looking at a pretty blank canvas for the next few days. The only spot on the radar is Big Ben, a beach/jetty setup that’s inconsistent and exposed to the swell. It’s also a beginner-friendly zone, but don’t get your hopes up just yet.
The water temp is sitting at 81°, which is about average for this time of year – nothing weird there.
For the first week, from Tuesday the 28th of July right through to Saturday the 2nd of August, it’s mostly small and weak. You’re looking at knee to waist-high junk at best, with a combined energy reading that’s barely a whisper (146 on Tuesday). The wind is messy, mostly cross or cross-onshore, and the period is short, around 6-7 seconds. That’s just mushy, blown-out slop. Not worth paddling out for.
There’s a glimmer on Sunday the 2nd of August. The swell starts to build, with a 5ft swell from the ESE and a period jumping to 14 seconds. That’s a proper groundswell. The combined energy hits 1030, which is moderate. But the wind is onshore, so it’s going to be lumpy. The surf is still only marginal.
Now, here’s the real kicker. From Monday the 3rd of August onwards, the swell goes absolutely mental. We’re talking 10ft on Monday afternoon, 13ft on Tuesday, and peaking at a massive 20ft on Wednesday the 5th of August. The period is a dreamy 17-18 seconds, with combined energy readings in the thousands (over 21,000 on Wednesday). That’s a very strong, long-period groundswell.
But here’s the catch – and it’s a big one. For a beach/jetty break like Big Ben, this is just too much. It’s expert-only territory, and even then, the forecast says it’s too big for this break. A long-period swell like this will jack up and close out on a beach setup. It’s going to be a washing machine. The wind is cross-offshore on Wednesday morning which would be clean, but the size is just insane. This setup honestly looks more interesting for kite surfing than paddle surfing.
The best stand-out, if you’re a seasoned charger, would be the Wednesday morning, August 5th, at Big Ben. You’ve got a 20ft SE swell with a 18-second period, and a cross-offshore wind from the NE. The water will be clean, but you’d better be a damn good swimmer. For the rest of us, it’s a week to watch from the sand.
The energy drops off later in the second week, but it stays messy and cross-onshore, dropping back to 5ft and smaller. The crowds at Big Ben are listed as "sometimes", so on the rare good day, you might have some company.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 31°C on Wed afternoon, min 25°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Fri night. Warm (max 27°C on Sun morning, min 23°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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 10 | SW 7 | SSW 7 | SW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | E 11 | ENE 8 | ESE 14 | ESE 16 | ESE 15 | ESE 14 | SE 15 | ESE 17 | SE 18 | SE 18 |
Wave Graph | |||||||||||||||||||
58 | 267 | 138 | 69 | 54 | 56 | 40 | 51 | 23 | 21 | 39 | 76 | 223 | 656 | 996 | 1492 | 3224 | 4444 | 6545 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | glassy | glassy | cross-off | glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off |
High Tide | 3:33AM1.49m | 5:50PM1.50m | 4:19AM1.53m | 6:13PM1.51m | 5:03AM1.55m | 6:35PM1.50m | 5:45AM1.54m | 6:57PM1.49m | 6:27AM1.49m | 7:20PM1.48m | 7:11AM1.41m | 7:42PM1.47m | |||||||
Low Tide | 10:29PM1.03m | 10:45AM0.06m | 11:02PM0.94m | 11:20AM0.08m | 11:34PM0.85m | 11:52AM0.14m | 00:07AM0.76m | 12:24PM0.23m | 00:41AM0.69m | 12:53PM0.36m | 1:18AM0.62m | 1:22PM0.51m | 1:59AM0.58m | ||||||
— | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | |
6:45 | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | |
mm | 1 | — | — | — | — | — | — | — | 1 | 4 | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 30 | 31 | 27 | 31 | 29 | 27 | 28 | 28 | 24 | 25 | 26 | 24 | 27 | 27 | 24 | 27 | 27 | 23 |
Feels °C | 28 | 33 | 33 | 31 | 34 | 32 | 30 | 31 | 31 | 27 | 27 | 28 | 27 | 29 | 29 | 26 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | SSW 7 | SE 10 | SW 7 | SSW 7 | SE 10 | SSW 7 | SSW 7 | SSW 6 | SW 6 | SE 9 | E 11 | ESE 16 | ESE 15 | ESE 14 | SE 15 | ESE 17 | SE 18 | SE 18 |
31 | 132 | 48 | 69 | 54 | 24 | 40 | 51 | 23 | 10 | 12 | 58 | 223 | 656 | 996 | 1492 | 3224 | 4444 | 6545 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | E 9 | SE 10 | SE 10 | E 8 | ENE 8 | ENE 8 | SE 9 | NE 8 | SSW 6 | ESE 14 | ESE 10 | ENE 16 | ENE 15 | E 15 | E 14 | E 14 | E 14 |
48 | 34 | 15 | 33 | 23 | 12 | 14 | 13 | 14 | 15 | 6 | 76 | 80 | 82 | 72 | 109 | 100 | 98 | 94 | |
Swell 3 Height (m) Direction Period (s) | SSW 8 | E 9 | NE 8 | ENE 9 | E 9 | ENE 12 | SE 10 | SE 10 | ENE 8 | E 11 | E 10 | SE 8 | ENE 16 | NE 8 | — | NE 7 | — | — | — |
14 | 15 | 10 | 16 | 14 | 14 | 14 | 14 | 6 | 21 | 19 | 25 | 83 | 9 | — | 14 | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSW 5 | SW 7 | SSW 7 | — | — | SSW 7 | — | NE 3 | NE 4 | ENE 3 | ENE 8 | ENE 7 | E 4 | — | NE 8 | NE 7 | ENE 4 | E 5 | ENE 6 |
58 | 267 | 138 | — | — | 56 | — | 4 | 3 | 4 | 39 | 43 | 9 | — | 28 | 14 | 15 | 40 | 65 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 22 | 90 | 6 | 22 | 22 | 22 | 29 | 22 | 29 | 48 | 29 |
Best forecast wave conditions in Chiba | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










