
Surf Forecasts:
Big Ben surf forecast from 19 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, 12AM (local time) - 4.5ft (1.3m), 11s period, E swell with 410 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 0.6m 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 1.3m 11s and forecast to arrive on Tuesday (Jul 21) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Jul 24) at 3AM.
| 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 | 12AM (Tue 21st Jul) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ at Big Ben over the next couple of weeks.
Honestly, this is a pretty quiet start. The first week, from Monday the 20th of July right through to Sunday the 26th, is a total write-off. We’re looking at tiny, weak, messy swells and cross-shore winds that never line up. The combined energy of all swells directed here is sitting in the low 100s to 180, which is just weak, listless energy. The water’s about 78°, with a temperature anomaly of -0.3°, so it’s about average for the time of year. There’s nothing to get excited about. You’d be better off staying home.
Now, things start to get interesting around Tuesday the 28th of July. A solid SSW groundswell pushes in with a 14-second period, and the wind swings cross-offshore. The swell hits 7 ft, and the combined energy jumps to 1835, which is a solid, punchy energy. The morning might be a bit lumpy, but that Tuesday afternoon looks clean. This is the first real standout. The swell is approaching 7 ft, so it’s getting into the zone where it’s better for experienced surfers, but the clean conditions with that offshore wind will make it a ripper session. The swell direction is from the SSW, which is a good match for the spot’s optimum SE direction, so it’s going to wrap in nicely.
Wednesday the 29th of July sees even more size, with a 10 ft SW groundswell and a 15-second period, and the energy rockets to 6005. But the wind goes onshore, and the commentary says the swell is predicted to be too big for this break. It’s a beach/jetty setup, and with that kind of power and a short window, it’s going to be raw and messy. This one is for the absolute experts only, and even then, it’s risky.
Thursday the 30th of July is a beauty. The swell drops just a touch to 8 ft from the SW with a 15-second period, and the wind goes *glassy*. That’s a major positive. The combined energy is still a massive 2914, so you’ve got power, but with glassy conditions, it’s going to be clean and hollow. This is another standout morning. The swell is over 8 ft, so this is expert territory, but if you’ve got the skills, this is the session to aim for.
Friday the 31st of July is just insane. We’re looking at 20 ft, 16-second swell from the S, with energy hitting 16561. That’s a monster. The wind is light onshore, but the break is going to be completely shut down by the size. This is not a surf day; it’s a watch-from-the-cliffs day.
The first weekend of August, the 1st and 2nd, is a mess. Strong onshore winds and a drop in quality. The swell is still big but wind-chopped and lumpy. By Monday the 3rd, the energy drops right back to the 200s and 300s, and it’s small, weak, and inconsistent again. The rest of the forecast is a slow fade.
So, the best on offer is clearly the Tuesday afternoon, the 28th of July, for the clean, punchy conditions, and the glassy Thursday morning, the 30th of July, for the power. Both are for experienced surfers. Don’t waste your time on the first week.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Tue morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Fri afternoon. Warm (max 29°C on Thu morning, min 23°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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 9 | E 8 | E 11 | ENE 11 | ENE 10 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 | E 9 | E 9 | E 9 | SE 11 | SE 16 | SE 16 | SE 16 | SE 15 | SE 11 | SE 11 | SE 11 |
Wave Graph | |||||||||||||||||||||
120 | 116 | 410 | 337 | 281 | 204 | 208 | 167 | 163 | 125 | 85 | 81 | 59 | 57 | 91 | 90 | 87 | 78 | 73 | 55 | 71 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-off | cross | cross | cross | cross-off | cross | cross-on | on | cross-on | cross-on |
High Tide | 8:26PM1.41m | 8:37AM1.20m | 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 | ||||||||
Low Tide | 1:55PM0.52m | 2:46AM0.65m | 2:25PM0.68m | 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 | ||||||||
4:39 | — | — | 4:39 | — | — | 4:39 | — | — | 4:41 | — | — | 4:41 | — | — | 4:41 | — | — | 4:43 | — | — | |
— | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 7 | — | 4 | — | — | — | — |
Temp °C | 30 | 29 | 26 | 31 | 30 | 26 | 30 | 30 | 27 | 29 | 29 | 26 | 27 | 24 | 24 | 26 | 26 | 24 | 26 | 27 | 26 |
Feels °C | 33 | 31 | 30 | 34 | 33 | 30 | 33 | 34 | 32 | 32 | 33 | 30 | 30 | 26 | 28 | 29 | 29 | 27 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 8 | E 11 | ENE 11 | ENE 10 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | SE 10 | E 8 | E 6 | E 6 | ESE 5 |
120 | 116 | 410 | 337 | 281 | 204 | 208 | 167 | 163 | 125 | 85 | 81 | 59 | 57 | 55 | 36 | 49 | 49 | 27 | 25 | 21 | |
Swell 2 Height (m) Direction Period (s) | SSE 7 | ENE 14 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SE 11 | SW 5 | SSW 6 | SE 10 | SE 9 | SE 11 | SE 10 | SE 10 | E 8 | SE 10 | SE 11 | SE 11 | S 11 |
16 | 64 | 13 | 13 | 12 | 11 | 6 | 5 | 29 | 13 | 18 | 47 | 23 | 57 | 53 | 48 | 36 | 52 | 73 | 55 | 60 | |
Swell 3 Height (m) Direction Period (s) | S 8 | SE 8 | SE 11 | ESE 11 | SE 11 | ESE 11 | ESE 11 | ESE 11 | SE 20 | SE 10 | SE 10 | SW 5 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | E 8 | E 8 | SE 11 |
4 | 18 | 5 | 13 | 19 | 12 | 11 | 11 | 15 | 25 | 25 | 7 | 49 | 43 | 91 | 90 | 87 | 78 | 31 | 28 | 71 | |
Wind waves Height (m) Direction Period (s) | S 9 | SSW 3 | SW 4 | SW 4 | SW 4 | SW 4 | SW 5 | SSW 4 | SSW 4 | — | — | — | NE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | — | — | S 3 | SSW 4 |
40 | 7 | 8 | 8 | 11 | 14 | 10 | 13 | 13 | — | — | — | 8 | 6 | 9 | 6 | 3 | — | — | 2 | 10 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 35 | 35 | 30 | 35 | 30 | 30 | 35 | 30 | 6 | 22 | 0 | 35 | 229 | 35 | 0 | 35 | 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.










