Surf Forecasts:
Big Ben surf forecast from 12 Jul 2026:
- Best quality surf: Monday 13 Jul, 3AM (local time) - 5.5ft (1.7m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Friday 17 Jul, 3PM (local time) - 7.5ft (2.3m), 15s period, SE swell with 2,208 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 3AM (local time) - 5.5ft (1.7m), 14s period with SSW 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 Monday (Jul 13) at 3AM. The primary swell is predicted to be 1.7m and 14s period with a secondary swell of 0.4m and 9s. Another secondary swell of 1.1m 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 2.3m 15s and forecast to arrive on Friday (Jul 17) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 8s period and expected on Saturday (Jul 18) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 13th Jul) | 5.5ft (1.7m) 14s |
| Best Surf | 3AM (Mon 13th Jul) | 5.5ft (1.7m) 14s |
| Most Powerful | 3PM (Fri 17th Jul) | 7.5ft (2.3m) 15s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Alright, surfers, Rusty here. Let’s have a look at what’s coming our way at Big Ben. It’s a bit of a mixed bag over the next couple of weeks, but there are some definite windows to get excited about.
The week kicks off with a fair bit of size, but the wind isn’t playing ball. The best bet early on is a short window on Monday the 13th. We’ve got a solid 5ft SSW groundswell rolling in with a long 13-second period, and the wind is going glassy in the morning. That’s about as clean as it gets, and the water temp is sitting at a pretty normal 76°, so no surprises there. The wave energy is pumping at 853 (moderate), so you’ll feel it. Later in the day it drops to 4ft with a cross-offshore breeze, still clean.
Things get messy from Tuesday afternoon through to the end of the week with onshore winds and small, weak swell. The wave energy drops right off into the 100s and 200s, so it’s a bit of a write-off for a few days.
Now, hold on for the second week. Friday the 17th sees a new pulse of long-period SE groundswell, building to 8ft by the afternoon with a 15-second period. That’s a lot of water moving, with wave energy spiking to 2396 (very strong). The catch? It’s cross-onshore, so it’ll be a bit lumpy. This is one for experienced surfers only, as it’s over 8ft. The following Saturday and Sunday stay big, around 7ft to 8ft, but the wind remains a problem, keeping it choppy and marginal.
The next standout, and honestly the best-looking day in the whole outlook, is Wednesday the 22nd. We’ve got a solid 8ft E swell with a 14-second period, and the wave energy is a massive 2113 (very strong). The wind is cross-shore, which is the best we’ve seen for that size. It’s still a big day, so definitely for the experienced crew, but it could be a ripper.
After that, it fades out. There’s a tiny, clean window on the morning of Sunday the 26th with just 1ft of SSE groundswell and a 15-second period, but it’s barely a wave. The week finishes small and marginal.
Overall, the standout is Wednesday the 22nd for the big, powerful swell, but Monday the 13th morning is your best bet for clean, manageable waves. The middle of the week is a bit of a flat spell, so pick your moments.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 29°C on Wed morning, min 23°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Wed afternoon, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 16 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | E 9 | E 8 | E 8 | E 9 | E 8 | SE 17 | SE 15 | SE 14 | SE 13 | SE 12 | ESE 11 | ESE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2583 | 1126 | 812 | 517 | 280 | 186 | 143 | 88 | 61 | 76 | 92 | 90 | 97 | 92 | 978 | 2208 | 1892 | 1518 | 1299 | 1221 | 1088 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross-off | cross-on | glassy | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross |
High Tide | 4:50PM1.37m | 2:13AM1.42m | 5:22PM1.43m | 3:05AM1.46m | 5:51PM1.47m | 3:52AM1.50m | 6:18PM1.48m | 4:37AM1.51m | 6:44PM1.48m | 5:21AM1.51m | 7:10PM1.47m | 6:05AM1.47m | 7:35PM1.45m | 6:50AM1.40m | |||||||
Low Tide | 9:24PM1.12m | 9:51AM0.07m | 10:10PM1.09m | 10:31AM0.02m | 10:48PM1.03m | 11:08AM0.01m | 11:24PM0.97m | 11:44AM0.04m | 00:00AM0.89m | 12:18PM0.11m | 00:36AM0.82m | 12:51PM0.22m | 1:15AM0.75m | ||||||||
 |  | | |  |  | |  |  | |  | | | | | | | | | | | |
 | — | — | 4:33 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 |
 | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | 6:52 |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 28 | 28 | 25 | 28 | 28 | 25 | 29 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 25 | 28 | 27 | 24 | 27 |
Feels °C | 29 | 30 | 32 | 32 | 29 | 32 | 31 | 28 | 31 | 30 | 29 | 29 | 30 | 29 | 31 | 30 | 29 | 30 | 29 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | E 9 | E 8 | E 8 | E 9 | E 8 | SE 17 | SE 15 | SE 14 | SE 13 | SE 12 | ESE 11 | ESE 10 |
| kJ | 2583 | 1126 | 812 | 517 | 280 | 186 | 143 | 88 | 61 | 76 | 92 | 90 | 97 | 92 | 978 | 2208 | 1892 | 1518 | 1299 | 1221 | 1088 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 9 | E 9 | SW 9 | SSE 9 | SSE 9 | SE 10 | SE 10 | E 9 | ESE 9 | ESE 9 | E 9 | WSW 8 | SW 7 | SW 8 |
| kJ | 40 | 41 | 26 | 26 | 28 | 30 | 32 | 41 | 58 | 41 | 8 | 8 | 17 | 15 | 94 | 144 | 101 | 78 | 6 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 12 | SE 12 | SE 12 | SE 10 | SE 10 | SSE 11 | SE 11 | SE 11 | SW 8 | SE 15 | SE 10 | SW 7 | SW 7 | SW 7 | — | SW 10 | — |
| kJ | 24 | 25 | 15 | 15 | 22 | 22 | 22 | 26 | 17 | 12 | 5 | 5 | 11 | 8 | 24 | 44 | 19 | 13 | — | 4 | — |
Wind waves Height (m) Direction Period (s) | SSW 4 | S 5 | — | — | — | E 3 | — | S 3 | — | SSW 3 | SSW 4 | SSW 5 | SSW 6 | S 5 | S 5 | — | — | — | E 9 | — | — |
| kJ | 30 | 31 | — | — | — | 1 | — | 1 | — | 4 | 33 | 74 | 84 | 51 | 33 | — | — | — | 99 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 183 | 39 | 0 | 0 | 22 | 0 | 30 | 30 | 35 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 30 | 22 | 29 |
Best forecast wave conditions in Chiba | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
Nearest