Surf Forecasts:
Big Ben surf forecast from 29 Jul 2026:
- Best quality surf: Monday 3 Aug, 9AM (local time) - 10ft (3.0m), 18s period, ESE swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 9AM (local time) - 20ft (6.0m), 17s period, SE swell with 22,564 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 9PM (local time) - 3.5ft (1.1m), 7s period with SW 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 9PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.5m and 10s. 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 6.0m 17s and forecast to arrive on Wednesday (Aug 05) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 29th Jul) | 3.5ft (1.1m) 7s |
| Best Surf | 9AM (Mon 3rd Aug) | 10ft (3.0m) 18s |
| Most Powerful | 9AM (Wed 5th Aug) | 20ft (6.0m) 17s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what's on the cards for the local stretch.
Right off the bat, we're looking at a pretty quiet week. The first proper surfable day won't show up until Sunday the 2nd of August, and even then, it's a bit of a slow start. The best bet for the next week or so is actually a bit of a wild one – a big pulse of swell that's frankly going to be too much for the average punter.
The standout session is shaping up for Monday morning, the 3rd of August. Big Ben is a beach/jetty setup, and we're looking at a solid 10ft swell from the ESE. The period is a very long 18 seconds, which is proper groundswell energy. The moderate NNE cross-offshore breeze will keep the face clean. The combined energy is massive at 4737, so there's serious power in the water. Honestly, this is too big for beginners and getting into the expert-only zone, but if you've got the experience and the quiver for it, that morning session is the one to aim for. The water temp is sitting at a nice 81°, which is about a degree warmer than average for this time of year, so you'll be comfy in a spring suit or boardies.
Monday afternoon and into Tuesday (4th August) keep the same energy, with the swell actually building to 13ft and then 16ft, with energy readings hitting 10,206 and 13,409. The wind stays cross-shore from the NE, so it's still rideable for the brave, but it's definitely only for the heavy hitters.
The rest of the 16-day window is a bit of a mixed bag. We get a slow drop-off through the middle of the week, with big but messy conditions. By the weekend of the 9th and 10th of August, we're looking at smaller 5ft to 7ft swell from the east, but the wind gets up again, making it a bit choppy and marginal. The following week slides back into poor, small surf with a lot of cross-shore wind. Thursday morning, the 13th of August, offers a brief window of clean conditions with a 4ft E swell and a light NNE cross-offshore, but it's a small window.
So, to sum it up: the first week is a write-off until the big pulse arrives. That Monday (3rd) is your best shot for serious, powerful waves, but it's not for the faint-hearted. After that, it's a waiting game for a clean, smaller day.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 29°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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) | SSW 7 | SSW 7 | SW 7 | SSW 7 | SE 10 | SSW 7 | SSW 7 | SSW 6 | E 11 | ESE 11 | SE 16 | ESE 15 | ESE 15 | ESE 16 | ESE 16 | ESE 18 | ESE 17 | SE 17 | SE 17 | SE 17 | SE 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 138 | 124 | 69 | 51 | 33 | 83 | 91 | 37 | 20 | 23 | 124 | 275 | 829 | 1112 | 2206 | 4636 | 5170 | 6625 | 10206 | 13409 | 18127 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | glassy | cross | cross | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off | cross | cross | cross-off |
High Tide | 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 | 7:59AM1.30m | 8:06PM1.45m | ||||||||
Low Tide | 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 | 1:49PM0.67m | 2:48AM0.56m | |||||||
 | |  |  | | | | | | | |  | | |  | | | | | | | |
 | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | 4:50 | — | — |
 | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 30 | 31 | 27 | 30 | 29 | 27 | 30 | 29 | 26 | 28 | 28 | 26 | 29 | 29 | 25 | 27 | 27 | 24 | 28 | 27 | 24 |
Feels °C | 33 | 34 | 31 | 32 | 32 | 32 | 33 | 32 | 28 | 31 | 31 | 30 | 32 | 32 | 27 | 27 | 27 | 25 | 28 | 26 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SW 7 | SSW 7 | SE 10 | SSW 7 | SSW 7 | SSW 6 | S 6 | ESE 11 | SE 16 | ESE 15 | ESE 15 | ESE 16 | ESE 16 | ESE 18 | ESE 17 | SE 17 | SE 17 | SE 17 | SE 17 |
| kJ | 34 | 48 | 69 | 51 | 24 | 83 | 91 | 37 | 19 | 23 | 124 | 275 | 829 | 1112 | 2206 | 4636 | 5170 | 6625 | 10206 | 13409 | 18127 |
Swell 2 Height (m) Direction Period (s) | ENE 6 | E 9 | SE 10 | SE 10 | E 8 | SE 10 | SE 10 | SSE 5 | NE 8 | NE 8 | ESE 11 | SE 5 | ENE 16 | ENE 15 | E 15 | E 14 | E 14 | E 14 | — | — | — |
| kJ | 8 | 15 | 23 | 23 | 13 | 15 | 14 | 5 | 15 | 15 | 39 | 18 | 82 | 72 | 109 | 101 | 98 | 94 | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 9 | NE 8 | E 9 | E 9 | SSW 8 | ENE 8 | ENE 8 | SE 9 | E 11 | SW 6 | SW 6 | E 10 | SSE 10 | ENE 7 | — | — | — | — | — | — | — |
| kJ | 15 | 11 | 14 | 14 | 6 | 14 | 14 | 14 | 20 | 8 | 10 | 49 | 9 | 5 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 7 | SSW 7 | — | — | SSW 6 | — | — | E 3 | E 3 | ESE 4 | ESE 4 | ESE 4 | — | SE 5 | ENE 7 | — | — | E 6 | — | — | — |
| kJ | 138 | 124 | — | — | 33 | — | — | 1 | 1 | 11 | 14 | 18 | — | 5 | 15 | — | — | 83 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 24 | 0 | 6 | 30 | 0 | 6 | 30 | 22 | 22 | 30 | 29 | 29 | 35 | 29 | 29 | 35 | 29 | 29 | 534 | 532 |
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.
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