Surf Forecasts:
Big Ben surf forecast from 13 Aug 2026:
- Best quality surf: Sunday 16 Aug, 12AM (local time) - 5ft (1.5m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 9PM (local time) - 7ft (2.1m), 10s period, E swell with 882 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 12AM (local time) - 5ft (1.5m), 10s period with E 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 16) at 12AM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 1.5m and 10s. Another secondary swell of 0.6m and 10s 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 2.1m 10s and forecast to arrive on Sunday (Aug 16) at 9PM. 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 16th Aug) | 5ft (1.5m) 10s |
| Best Surf | 12AM (Sun 16th Aug) | 5ft (1.5m) 10s |
| Most Powerful | 9PM (Sun 16th Aug) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Howdy folks, Rusty here. Let's run through the surf outlook for Big Ben, a beach and jetty spot.
First thing's first, the water temp is about average for this time of year, nothing to write home about.
The next week or so is a bit of a drought. From Thursday the 13th through to Friday the 21st, it's a nine-day stretch of poor to marginal waves. The swell is small, the period is short, and the winds are mostly cross or onshore, stirring up chop. There's a few lighter wind mornings, but nothing that's going to get the heart racing. On Saturday the 22nd of August morning we finally see a clean, off-shore breeze with a small 3ft SSW swell at 10 seconds, but the energy is still weak.
But hold onto your board, because the real action starts on Monday the 24th of August. Monday afternoon is the first true standout. The wind will be glassy calm, and a clean 4ft SE groundswell arrives with a solid 12-second period. The combined energy hits 722, which is moderate. That's the session to circle on the calendar. The break will be clean with proper lines, though the longer period might make it close out a bit at a beach break.
Then Tuesday the 25th of August morning is for the big crew. We've got an 8ft SE groundswell with a very long 14-second period, and clean cross-off winds from the SW. Energy is strong at 2737. The swell direction is bang on the optimum from the SE. This is serious, powerful surf – for experienced surfers only. Expect a few of the locals out.
Wednesday the 26th of August morning is another beauty for the experts, with glassy conditions and a 7ft SE groundswell at 12 seconds. Strong energy at 1872. Prime conditions, but still a solid paddle.
A word of caution for the end of the month: Thursday the 27th and Friday the 28th are forecasting massive surf – 13ft to 18ft from the SE with extreme energy (up to 19609). That's too much for this break, so don't even think about it.
The best bet is the window from Monday the 24th through Wednesday the 26th. Monday afternoon with the glassy conditions is the pick.
Rusty.
Short Range ForecastHeavy rain (total 42mm), heaviest during Thu night. Warm (max 28°C on Thu morning, min 22°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Tue morning, min 22°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 10 | E 10 | E 10 | E 10 | E 9 | ENE 9 | E 8 | ENE 8 | SSE 8 | S 9 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 408 | 580 | 590 | 592 | 514 | 625 | 552 | 552 | 440 | 470 | 408 | 792 | 610 | 535 | 332 | 202 | 147 | 103 | 125 | 190 | 190 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross | cross | cross | on | on | on | on | cross-on | cross | cross-on | glassy |
High Tide | 5:41PM1.52m | 4:43AM1.58m | 6:02PM1.53m | 5:24AM1.59m | 6:22PM1.53m | 6:04AM1.56m | 6:42PM1.52m | 6:45AM1.49m | 7:03PM1.51m | 7:29AM1.39m | 7:24PM1.50m | 8:20AM1.27m | 7:46PM1.47m | ||||||||
Low Tide | 10:54AM0.14m | 11:08PM0.81m | 11:26AM0.18m | 11:38PM0.70m | 11:57AM0.26m | 00:10AM0.61m | 12:25PM0.38m | 00:43AM0.54m | 12:52PM0.51m | 1:20AM0.50m | 1:17PM0.66m | 2:01AM0.49m | 1:39PM0.82m | 2:52AM0.50m | |||||||
 | |  | | | | |  |  |  | |  | | | | | | | | | | |
 | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — | — |
 | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — |
mm | 1 | 1 | 21 | 4 | 1 | 11 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 25 | 27 | 28 | 25 | 27 | 27 | 24 | 27 | 27 | 23 | 27 | 27 | 25 | 28 | 27 | 25 | 27 | 28 | 25 |
Feels °C | 30 | 30 | 28 | 30 | 30 | 28 | 27 | 27 | 26 | 27 | 27 | 24 | 29 | 29 | 28 | 30 | 28 | 28 | 30 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 10 | E 10 | E 10 | E 10 | E 9 | ENE 9 | E 8 | ENE 8 | SSE 8 | S 9 | S 9 |
| kJ | 408 | 580 | 590 | 592 | 514 | 625 | 552 | 552 | 400 | 363 | 408 | 792 | 610 | 535 | 332 | 202 | 147 | 103 | 125 | 190 | 190 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 11 | SSW 10 | ESE 10 | ESE 9 | SSW 10 | SSW 9 | S 9 | SSW 9 | SE 11 | SE 10 | SE 10 | SSE 9 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 86 | 85 | 59 | 32 | 47 | 32 | 68 | 58 | 65 | 75 | 52 | 45 | 39 | 29 | 40 | 37 | 36 | 61 | 72 | 53 | 55 |
Swell 3 Height (m) Direction Period (s) | S 11 | SSE 11 | S 12 | S 12 | SE 11 | SE 10 | SSE 9 | SSE 8 | SSW 9 | SSW 10 | SE 17 | SE 11 | SE 11 | SE 11 | SW 8 | SSW 8 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 10 |
| kJ | 2 | 13 | 25 | 44 | 30 | 28 | 49 | 23 | 47 | 58 | 11 | 30 | 43 | 42 | 18 | 21 | 12 | 36 | 36 | 50 | 50 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | E 10 | E 10 | ENE 9 | — | — | — | — | — | SSE 7 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 440 | 470 | 222 | — | — | — | — | — | 9 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 29 | 29 | 6 | 29 | 55 | 29 | 534 | 0 | 29 | 29 | 6 | 6 | 29 | 30 | 30 | 30 | 30 | 6 | 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)
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