Surf Forecasts:
Big Ben surf forecast from 25 Jul 2026:
- Best quality surf: Sunday 26 Jul, 6AM (local time) - 4ft (1.2m), 8s period, NE swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 6AM (local time) - 4ft (1.2m), 8s period, NE swell with 169 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 12AM (local time) - 1.5ft (0.5m), 10s period with SE 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 (Jul 26) at 12AM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.6m and 5s. 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 1.2m 8s and forecast to arrive on Sunday (Jul 26) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Sunday (Jul 26) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 26th Jul) | 1.5ft (0.5m) 10s |
| Best Surf | 6AM (Sun 26th Jul) | 4ft (1.2m) 8s |
| Most Powerful | 6AM (Sun 26th Jul) | 4ft (1.2m) 8s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright, crew, Rusty here, let’s break down Big Ben for the next couple of weeks.
Honestly, the first chunk of this forecast is a real bummer. We’re looking at a long, flat stretch with no real surf to speak of until the end of July. The waves are tiny, weak, and the wind is just plain ugly. You might see a glassy moment on the morning of the 30th, but with only 3ft of swell, it’s barely a bump.
The story changes come the 3rd of August. A big pulse of energy starts to build, with the swell from the ESE climbing to 5ft – 6ft, and a very long period of 15-16 seconds. That’s real groundswell. But the wind is still cross-shore, so the quality is just okay. Tuesday the 4th sees it push even bigger, hitting 8ft – 8ft, but the wind turns cross-onshore, making it a choppy mess.
Then, on Wednesday the 5th of August, the ocean goes nuts. We’re talking a solid 12ft swell from the east, with a 17-second period. The energy is massive. The wind goes light offshore out of the NNE, which would be perfect, but the data says this swell is too big for the break. This is a big-wave day, experts only, and it’s going to be a handful. The same massive swell sticks around through Thursday the 6th, still too big for paddle surfing. If you’re into kiting, this is your time.
The swell finally starts to drop on Friday the 7th, down to 6ft, but the wind is still messy. Your best chance for a decent session might be the morning of the 8th of August, with a 5ft groundswell from the SSW and a 16-second period. The wind is light and cross-shore, which might clean it up a bit. It’s not perfect, but it’s the most manageable of the big swells. We finish up with Sunday the 9th seeing another huge 10ft – 12ft groundswell from the south, glassy in the morning, but again, way too big for this spot.
So, here’s the deal: a long wait for some swell, and when it comes, it’s mostly too much. The highlight is the morning of the 8th of August, with that 5ft groundswell and light wind. For the rest of the big stuff, unless you’re a seasoned charger, I’d sit this one out.
Rusty.
Short Range ForecastHeavy rain (total 31mm), heaviest during Sat night. Warm (max 28°C on Sun morning, min 23°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 29°C on Fri morning, min 22°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | ||||||||||||||
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) | SE 16 | SE 10 | NE 7 | ENE 7 | SE 11 | SE 10 | SE 10 | SE 10 | ENE 8 | ENE 8 | ENE 8 | NE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | SE 10 | ENE 8 | SE 9 | E 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 87 | 54 | 156 | 78 | 72 | 70 | 65 | 82 | 64 | 69 | 82 | 82 | 74 | 92 | 75 | 51 | 35 | 22 | 22 | 20 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross-on | cross-on | cross | cross-on | cross | on | glassy | cross-off | cross-off | cross-on | cross | glassy | cross-on | cross | cross | cross | cross |
High Tide | 4:08PM1.27m | 00:24AM1.35m | 4:36PM1.36m | 1:40AM1.39m | 5:02PM1.43m | 2:41AM1.44m | 5:26PM1.48m | 3:33AM1.49m | 5:50PM1.50m | 4:19AM1.53m | 6:13PM1.51m | 5:03AM1.55m | 6:35PM1.50m | |||||||
Low Tide | 7:43PM1.20m | 8:39AM0.25m | 9:04PM1.17m | 9:26AM0.15m | 9:52PM1.11m | 10:08AM0.09m | 10:29PM1.03m | 10:45AM0.06m | 11:02PM0.94m | 11:20AM0.08m | 11:34PM0.85m | 11:52AM0.14m | 00:07AM0.76m | |||||||
 |  |  | | | |  |  | | | | |  | | | | | | |  | |
 | — | — | 4:43 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — |
 | 6:47 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — |
mm | 4 | 18 | — | — | 6 | — | — | — | 3 | 3 | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 27 | 24 | 28 | 28 | 26 | 27 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 23 | 26 | 27 | 25 | 29 | 29 | 27 |
Feels °C | 29 | 27 | 32 | 31 | 30 | 28 | 27 | 26 | 29 | 31 | 27 | 28 | 28 | 25 | 30 | 29 | 28 | 31 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 10 | ENE 5 | ENE 7 | ENE 7 | E 7 | E 6 | SE 10 | E 6 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | SE 10 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 7 |
| kJ | 49 | 16 | 86 | 78 | 51 | 29 | 65 | 30 | 64 | 69 | 76 | 54 | 47 | 92 | 75 | 51 | 35 | 22 | 22 | 14 |
Swell 2 Height (m) Direction Period (s) | E 8 | SE 10 | SE 11 | SE 11 | SE 11 | SE 10 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 6 | SW 6 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | E 11 |
| kJ | 36 | 54 | 73 | 56 | 71 | 67 | 23 | 82 | 63 | 63 | 48 | 23 | 9 | 45 | 33 | 23 | 24 | 14 | 22 | 20 |
Swell 3 Height (m) Direction Period (s) | SE 16 | ENE 8 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 | SSW 8 | SSW 9 | SSW 9 | SSW 6 | SE 10 | SSW 8 | SSW 7 | SW 7 | ENE 12 | SSW 7 | S 4 | S 4 | S 4 |
| kJ | 87 | 22 | 76 | 74 | 72 | 70 | 65 | 39 | 30 | 42 | 18 | 35 | 12 | 20 | 11 | 14 | 5 | 2 | 3 | 4 |
Wind waves Height (m) Direction Period (s) | E 4 | NE 5 | NE 7 | — | — | NNE 3 | ENE 5 | ENE 7 | — | — | NE 8 | NE 7 | ENE 8 | — | — | S 7 | S 4 | — | — | — |
| kJ | 7 | 31 | 156 | — | — | 3 | 51 | 40 | — | — | 82 | 82 | 74 | — | — | 27 | 6 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 530 | 0 | 22 | 30 | 30 | 35 | 38 | 6 | 30 | 0 | 0 | 0 | 35 | 6 | 0 | 30 | 30 | 229 | 2277 | 557 |
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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