Surf Forecasts:
Big Ben surf forecast from 6 Aug 2026:
- Best quality surf: Sunday 9 Aug, 3AM (local time) - 6ft (1.8m), 13s period, ESE swell with glassy winds.
- Most powerful swell: Thursday 6 Aug, 6PM (local time) - 8ft (2.5m), 13s period, S swell with 2,219 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 3AM (local time) - 5ft (1.5m), 11s period with S 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 Saturday (Aug 08) at 3AM. The primary swell is predicted to be 1.5m and 11s period with a secondary swell of 1.2m and 9s. 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 2.5m 13s and forecast to arrive on Thursday (Aug 06) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 13s period and expected on Tuesday (Aug 11) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 8th Aug) | 5ft (1.5m) 11s |
| Best Surf | 3AM (Sun 9th Aug) | 6ft (1.8m) 13s |
| Most Powerful | 6PM (Thu 6th Aug) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – this isn't a classic forecast for Big Ben. We've got a long 16-day window, but the surf is going to be a tricky customer for most of it. We're looking at a lot of marginal days with choppy, onshore wind ruining the party. The water temp is bang on average for this time of year at 80°, nothing unusual there.
The first few days are a write-off, honestly. Thursday the 6th through to maybe Sunday the 9th, we've got waves in the 5 ft to 8 ft range, but the wind is mostly cross-on or onshore. It's going to be messy. An 8 ft SSE swell with a 13-second period on Thursday morning sounds alright, but with that 15 km/h ENE cross-on breeze, it'll be a choppy, bumpy mess. The energy is there (2515), but the quality isn't. Those are not the days to rush out.
We get a little window Monday the 10th morning. A 7 ft E swell with a cross-offshore NNE wind at 25 km/h. The report says "clean," which is a rare positive here. The combined energy is moderate (1689), but that wind direction is a game-changer for this beach/jetty setup. It'll still be a bit of a wrestle with the moderate breeze, but it's the best-looking morning in the first week.
Now, Tuesday the 11th is the brutal tease. We've got a proper pulse of swell coming in – a 13 ft NE swell Tuesday morning with a deep-water energy reading of 6402. That's strong, dangerous stuff. The wind is a clean cross-offshore from the WNW. If you are a very experienced big-wave charger, the Tuesday afternoon looks even better: 10 ft ENE, glassy offshore wind (5 km/h from WNW), and clean. But I have to say it – the forecast calls this too big for the break. This is for experts only, and even then, be careful. The rest of that week into the next is a mix of onshore winds, lumpy chop, and dropping swell.
We then hit a proper flat spell. From about Saturday the 17th onwards, the swell drops below 5 ft, and the energy levels fall off a cliff, dipping to 322 and 357. The wind is still messy. For almost a week, from the 17th to the 21st, there's very little to recommend. It’s a quiet period for the area.
All in all, the standout morning is Monday, August 10th. Get up early. That 7 ft E swell with clean, cross-offshore wind is your best bet for a session that won't frustrate you. Tuesday the 11th is a massive, powerful swell for big-wave only. After that, it’s a waiting game for the next system.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 29°C on Thu morning, min 24°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Tue morning, min 22°C on Mon night). Winds increasing (light winds from the ENE on Sun morning, fresh winds from the NE by Tue afternoon). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
AM | 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) | SSE 13 | S 12 | S 13 | S 12 | S 12 | S 11 | SSW 11 | ESE 13 | ESE 13 | ESE 13 | E 13 | E 12 | E 12 | E 11 | E 11 | E 11 | ENE 10 | ENE 9 | ENE 8 | ENE 9 | E 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2090 | 1911 | 1938 | 1065 | 887 | 606 | 447 | 633 | 1041 | 1308 | 1359 | 1170 | 870 | 701 | 639 | 606 | 492 | 360 | 242 | 304 | 1556 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-off |
High Tide | 10:40AM1.08m | 9:01PM1.40m | 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 | |||||||||
Low Tide | 2:28PM0.99m | 5:14AM0.52m | 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 | |||||||||
 | |  |  | |  | | | | | |  |  | | | | | | | | | |
 | 4:50 | — | — | 4:52 | — | — | 4:52 | — | — | 4:52 | — | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — |
 | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — |
mm | — | — | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 29 | 26 | 29 | 29 | 25 | 29 | 28 | 25 | 29 | 28 | 24 | 27 | 27 | 23 | 30 | 27 | 24 | 27 | 26 | 24 |
Feels °C | 32 | 32 | 30 | 32 | 32 | 28 | 32 | 30 | 29 | 31 | 30 | 26 | 25 | 25 | 23 | 29 | 25 | 24 | 28 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SSE 13 | S 12 | S 13 | S 12 | S 12 | S 11 | SSW 11 | ESE 13 | ESE 13 | ESE 13 | E 13 | E 12 | E 12 | E 11 | E 11 | E 11 | SW 13 | SSW 12 | SW 12 | SW 12 | E 12 |
| kJ | 2090 | 1911 | 1938 | 1065 | 887 | 606 | 447 | 633 | 1041 | 1308 | 1359 | 1170 | 870 | 701 | 639 | 606 | 156 | 255 | 195 | 195 | 1556 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | SSW 11 | SSW 12 | SSW 12 | S 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 11 | SE 13 | E 9 | ESE 12 | SW 11 |
| kJ | 410 | 424 | 425 | 424 | 305 | 299 | 245 | 463 | 454 | 353 | 149 | 304 | 205 | 202 | 128 | 199 | 93 | 26 | 106 | 161 | 128 |
Swell 3 Height (m) Direction Period (s) | ENE 16 | ENE 16 | ENE 15 | ENE 15 | ENE 15 | ENE 14 | E 9 | E 10 | — | — | SW 13 | SSW 12 | SSW 11 | SSW 11 | S 10 | SSW 11 | SE 13 | — | ESE 12 | E 11 | SW 11 |
| kJ | 25 | 51 | 46 | 42 | 43 | 41 | 42 | 45 | — | — | 190 | 183 | 128 | 117 | 50 | 130 | 26 | — | 59 | 93 | 250 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ENE 10 | ENE 9 | ENE 8 | ENE 9 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 492 | 360 | 242 | 304 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 29 | 29 | 30 | 30 | 30 | 29 | 30 | 30 | 22 | 81 | 6 | 29 | 35 | 29 | 22 | 29 | 177 | 29 | 29 | 0 |
Best forecast wave conditions in Chiba | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big Ben surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest