
Surf Forecasts:
Big Ben surf forecast from 21 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 6AM (local time) - 3.5ft (1.0m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 21 Jul, 9PM (local time) - 3.5ft (1.0m), 10s period, E swell with 208 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 6AM (local time) - 3.5ft (1.0m), 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 Wednesday (Jul 22) at 6AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.2m and 8s. Another secondary swell of 0.8m and 5s 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 1.0m 10s and forecast to arrive on Tuesday (Jul 21) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Thursday (Jul 23) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 22nd Jul) | 3.5ft (1.0m) 10s |
| Best Surf | 6AM (Wed 22nd Jul) | 3.5ft (1.0m) 10s |
| Most Powerful | 9PM (Tue 21st Jul) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s on the cards for the local stretch.
Well, to be brutally honest, the next couple of weeks are looking pretty grim for any decent paddle surfing. We’ve got a long stretch of poor surf conditions ahead. The first recommendation for a surf comes up on Tuesday, July 21st, but it’s not a pretty picture. The only break on the radar is Big Ben, a beach/jetty setup that’s exposed to swell. The water temp is sitting at 78°F, which is pretty much bang on average for this time of year, so that’s one thing not to complain about.
From Tuesday, July 21st right through to the end of July, it’s a real struggle. The swell is tiny, mostly around 1ft to 4ft with periods of 9 to 10 seconds. The “combined energy” is weak, hovering between 91 and 321 — that’s not enough to get your heart racing. The winds are a mess, mostly cross or cross-onshore, and the wave comment on every single one of these days is either “poor surf conditions” or “marginal surf forecast.” There’s a brief moment on Wednesday, July 28th morning where it’s clean with a light cross-offshore breeze, but the swell is only 2ft and the energy is low (132). It’s not really a standout, just less terrible than the rest.
We then hit a big gap of no real recommendations until the very beginning of August. The first glimmer of something bigger comes on Saturday, August 1st. Swell jumps up to 4ft in the morning, but it’s from the SSE with a period of 12 seconds and the wind is onshore. The energy jumps to 777 (moderate), but it’s still looking marginal. The morning of Sunday, August 2nd, has a 5ft swell from the S, 13-second period, and a “combined energy” of 1300 (strong) — that’s a serious amount of water moving around. But again, wind is onshore and there’s a risk of thunderstorms. This is big enough that it’s only for the more experienced crew, as anything over 5ft can be a handful for beginners.
The absolute best on offer, if you can call it that, is looking like the morning of Tuesday, August 4th. We’ve got a 7ft swell from the SSW with a 14-second period (proper groundswell), and the “combined energy” is a hefty 1915. That’s very strong. But the wind is a cross-onshore, making it choppy. It’s still only rated as a marginal forecast. The swell direction from the SSW is not the optimum SE direction for Big Ben, so it won’t be as good as it could be. For a beach/jetty break, that long period (14 seconds) can make it break a bit too straight, but there will be some power in the water. This is for experts only, as it’s over 8ft.
So, no real standouts to rave about. The surf is basically non-existent for the first week and a half, then we get a pulse of bigger, messy, onshore swell at the start of August. The setup at Big Ben is likely to be more interesting for kite surfing than paddle surfing with that strong onshore wind and big, lumpy swell. Forecasts can change, but right now, it’s a tough run.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Warm (max 31°C on Wed morning, min 25°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Fri night. Warm (max 29°C on Fri afternoon, min 23°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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) | ENE 10 | E 10 | E 10 | E 10 | ENE 10 | E 10 | E 9 | E 9 | E 9 | SE 11 | SE 16 | SE 16 | SE 16 | SE 15 | SE 11 | SE 14 | SE 10 | SE 10 | SE 10 | ESE 10 |
Wave Graph | ||||||||||||||||||||
276 | 204 | 208 | 208 | 163 | 120 | 85 | 83 | 59 | 59 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 65 | 67 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross | cross-on | cross | cross-on | on | cross-on | cross | cross | cross | cross-on | on | on | cross-on | cross-on | cross |
High Tide | 8:54PM1.39m | 9:58AM1.10m | 9:25PM1.38m | 12:17PM1.05m | 10:06PM1.36m | 3:23PM1.15m | 11:05PM1.35m | 4:08PM1.27m | 00:24AM1.35m | 4:36PM1.36m | 1:40AM1.39m | 5:02PM1.43m | 2:41AM1.44m | |||||||
Low Tide | 3:46AM0.60m | 2:55PM0.85m | 5:01AM0.55m | 3:28PM1.01m | 6:26AM0.47m | 4:56PM1.15m | 7:40AM0.36m | 7:43PM1.20m | 8:39AM0.25m | 9:04PM1.17m | 9:26AM0.15m | 9:52PM1.11m | ||||||||
— | — | 4:39 | — | — | 4:41 | — | — | 4:41 | — | — | 4:41 | — | — | 4:43 | — | — | 4:43 | — | — | |
6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:47 | — | — | 6:46 | — | |
mm | — | — | — | — | — | — | — | 2 | — | — | 7 | — | — | — | — | 1 | 3 | 6 | 1 | 2 |
Temp °C | 30 | 27 | 31 | 30 | 27 | 30 | 30 | 26 | 28 | 29 | 26 | 26 | 25 | 24 | 26 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 32 | 31 | 34 | 33 | 31 | 35 | 33 | 30 | 32 | 33 | 30 | 27 | 25 | 27 | 28 | 28 | 28 | 29 | 28 | 30 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | E 10 | E 10 | E 10 | ENE 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | ENE 8 | E 8 | SE 10 | SE 10 | SE 10 | ESE 10 |
276 | 204 | 208 | 208 | 163 | 120 | 85 | 83 | 59 | 59 | 39 | 51 | 35 | 34 | 51 | 32 | 69 | 65 | 65 | 67 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 11 | SW 6 | SSW 6 | SE 10 | SE 9 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 14 | SSE 4 | ESE 5 | SE 5 |
12 | 11 | 6 | 5 | 11 | 34 | 25 | 24 | 23 | 57 | 53 | 48 | 49 | 54 | 73 | 56 | 72 | 9 | 11 | 10 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | ESE 11 | ESE 11 | SE 11 | SE 20 | SE 10 | SE 10 | SSW 5 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 14 | ENE 8 | SE 14 | SE 14 | SSW 8 |
19 | 12 | 11 | 5 | 15 | 25 | 25 | 5 | 49 | 43 | 91 | 90 | 87 | 78 | 76 | 74 | 21 | 70 | 65 | 23 | |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 4 | SW 5 | SW 4 | SW 5 | — | ENE 3 | NE 3 | ENE 4 | ENE 4 | E 4 | ESE 4 | SE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | S 4 | NNE 2 | NE 4 |
14 | 17 | 26 | 28 | 38 | — | 1 | 3 | 6 | 5 | 8 | 7 | 9 | 6 | 7 | 10 | 13 | 11 | 1 | 8 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1454 | 30 | 30 | 1467 | 35 | 6 | 35 | 6 | 22 | 30 | 30 | 35 | 513 | 6 | 35 | 30 | 30 | 30 | 30 | 30 |
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.










