Surf Forecasts:
Big Ben surf forecast from 4 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 6AM (local time) - 10ft (3.0m), 17s period, SSE swell with cross-shore winds.
- Most powerful swell: Saturday 11 Jul, 3AM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,248 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 3AM (local time) - 1.5ft (0.5m), 8s 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 (Jul 05) at 3AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.5m and 4s. Another secondary swell of 0.5m and 4s is also forecast. 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 3.0m 17s and forecast to arrive on Saturday (Jul 11) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 5th Jul) | 1.5ft (0.5m) 8s |
| Best Surf | 6AM (Wed 8th Jul) | 10ft (3.0m) 17s |
| Most Powerful | 3AM (Sat 11th Jul) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Updates in hr min s Forecast update imminent
Hey, Rusty here again, breakin' it down for you.
We're starting off slow at Big Ben. Those first few days are a write-off with weak, small waves and ugly winds blowing right onshore or across it. The water temp is about 73° F, which is a bit chillier than normal for this time of year.
Now, things get real interesting around Tuesday the 7th of July, but it's not for everyone. The swell is gonna jack up, and by Wednesday the 8th, we're looking at waves pushing 8 to 9 feet from the south-southeast. That's a long-period groundswell, 16 seconds between sets, with a massive amount of energy behind it (4698). The problem is the wind is cross-onshore, and the forecast says these waves are gonna be too big for this spot. It's experts-only territory, and even then, the wind will have it a bit lumpy.
Your best bet for a big-wave session is probably Thursday the 9th of July in the morning. You've still got that 8-foot swell from the SSE, but the wind is just a light zephyr from the east. It's the cleanest you'll see it for the biggest stuff, but that long period (14 to 16 seconds) is going to make it dumpy and powerful on a beach break. Not one for the faint of heart.
After that big pulse, it fades fast. By the weekend of the 12th, it's down to 7 feet and dropping. By Monday the 14th, we're back to tiny, weak surf. There's one bright spot on Thursday the 16th of July, where we get a little clean-up with a light offshore breeze from the NNE, but the swell is a pathetic 2 feet. You could maybe get a squeaker on a longboard, but that's about it.
So, for the big-wave hunters who love a challenge, the 8th through the 10th of July is your window. For everyone else, it's looking like a long, flat stretch ahead.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Mon night. Warm (max 24°C on Sat morning, min 21°C on Mon afternoon). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Tue morning. Warm (max 25°C on Thu morning, min 20°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | |||||||||||||||
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) | ENE 7 | ENE 8 | E 8 | E 8 | SE 5 | SE 6 | SE 14 | SE 7 | SSE 16 | SSE 16 | SE 16 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | SSE 14 | S 16 | S 14 | S 16 | SSW 16 | SSW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 38 | 50 | 46 | 29 | 49 | 114 | 179 | 181 | 314 | 1517 | 2905 | 3440 | 3633 | 3369 | 3697 | 2221 | 3842 | 1918 | 4168 | 4220 | 5194 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 8:14PM1.39m | 7:15AM1.31m | 8:44PM1.37m | 8:13AM1.21m | 9:15PM1.35m | 9:28AM1.11m | 9:50PM1.34m | 11:16AM1.05m | 10:30PM1.34m | 1:37PM1.08m | 11:19PM1.34m | 3:18PM1.19m | 00:16AM1.35m | ||||||||
Low Tide | 1:20PM0.23m | 1:51AM0.82m | 1:55PM0.38m | 2:43AM0.76m | 2:32PM0.54m | 3:44AM0.69m | 3:11PM0.71m | 4:55AM0.61m | 3:58PM0.87m | 6:12AM0.51m | 5:09PM1.01m | 7:21AM0.39m | 6:54PM1.11m | ||||||||
 |  |  | |  |  | | |  | | | |  |  |  | | | | | | | |
 | 4:28 | — | — | 4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — |
 | — | 6:57 | — | — | 6:57 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:55 | — |
mm | 3 | 2 | 5 | 3 | — | — | — | 1 | 8 | 4 | 4 | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 21 | 21 | 21 | 22 | 24 | 24 | 21 | 25 | 25 | 22 | 25 | 25 | 23 |
Feels °C | 25 | 24 | 25 | 24 | 23 | 23 | 23 | 24 | 21 | 20 | 20 | 23 | 23 | 23 | 22 | 26 | 26 | 24 | 27 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 8 | E 8 | E 8 | ESE 10 | ESE 10 | SE 14 | SE 7 | SE 11 | SSE 16 | SE 16 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | SSE 14 | S 16 | S 14 | S 16 | SSW 16 | SSW 18 |
| kJ | 38 | 50 | 46 | 29 | 35 | 37 | 179 | 168 | 217 | 1517 | 2905 | 3440 | 3633 | 3369 | 3697 | 2221 | 3842 | 1918 | 4168 | 4220 | 5194 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | NE 10 | S 4 | ESE 10 | ENE 8 | SE 14 | SE 17 | SE 12 | SSE 16 | ESE 7 | SSE 21 | ESE 7 | S 21 | S 19 | E 7 | S 18 | E 8 | SSW 17 | E 10 | E 10 | E 9 |
| kJ | 10 | 16 | 13 | 20 | 11 | 54 | 76 | 181 | 314 | 163 | 441 | 186 | 716 | 1037 | 146 | 1201 | 90 | 1470 | 68 | 68 | 83 |
Swell 3 Height (m) Direction Period (s) | SW 7 | SW 7 | SE 9 | SSE 10 | SSE 10 | ENE 8 | ENE 8 | SSE 16 | SW 6 | — | — | E 7 | — | — | — | E 7 | E 8 | E 9 | — | — | — |
| kJ | 7 | 7 | 14 | 9 | 9 | 12 | 12 | 169 | 2 | — | — | 206 | — | — | — | 134 | 90 | 78 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 3 | — | SE 4 | SE 5 | SE 6 | SE 7 | — | ESE 7 | — | — | — | E 7 | E 7 | — | — | — | — | — | — | — |
| kJ | — | 6 | — | 12 | 49 | 114 | 178 | — | 180 | — | — | — | 349 | 246 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 30 | 534 | 840 | 29 | 29 | 29 | 30 | 29 | 49 | 29 | 29 | 29 | 29 | 29 | 29 | 22 | 29 | 534 | 30 |
Best forecast wave conditions in Chiba | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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.
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