Surf Forecasts:
Big Ben surf forecast from 10 Jul 2026:
- Best quality surf: Monday 13 Jul, 6AM (local time) - 5.5ft (1.7m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Saturday 11 Jul, 3PM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,465 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 6AM (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 6AM. 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 1.0m 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 2.5m 16s and forecast to arrive on Saturday (Jul 11) at 3PM. 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+) | 6AM (Mon 13th Jul) | 5.5ft (1.7m) 14s |
| Best Surf | 6AM (Mon 13th Jul) | 5.5ft (1.7m) 14s |
| Most Powerful | 3PM (Sat 11th Jul) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Righto, let’s have a look at what’s on offer for Big Ben.
The 16-day window starts off with a bit of a flat spell, to be honest. We’ve got a solid pulse of SSW groundswell hitting on Saturday 11 July, but the wind is all over the shop – cross-shore and choppy – so it’s not really worth paddling out for. That swell hangs around through Sunday 12 July, but again, it’s messy, with a moderate cross-shore chop. The waves are pushing 8 ft, but the quality just isn’t there for a proper session.
It drops off after that. Monday 13 July sees the swell shrink to 5 ft, and it’s a risk of thunderstorms with light cross-shore wind. The energy is dropping fast (combined energy of 914). From Tuesday 14 July through to Wednesday 22 July, it’s a real quiet stretch. The swell is small, mostly under 4 ft, with a mix of onshore and cross-onshore winds. The wave energy is weak (values between 106 and 518), and the conditions are described as “poor” or “marginal” at best. There’s a few days there where you’d be better off doing something else – about a week and a half of flat, meh surf.
Now, here’s the standout – and it’s a good one. Thursday 23 July. The forecast is showing a proper southerly groundswell hitting 10 ft, with a very long period of 14 seconds. That’s a lot of juice (combined energy of 3773). The wind is cross-offshore from the NNE, which will keep the waves clean. The only catch is that swell size – 10 ft is big, solid, and this is an exposed beach/jetty setup. It’s going to be a powerful, tricky wave, really only for experienced surfers who know what they’re doing. The break is inconsistent, so you’ll be waiting for the sets, but when they come, they’ll be worth it. The water temperature is about average for this time of year, so no need for a thick steamer.
That’s the one to circle on the calendar. The rest of the last week has a few clean options – like Saturday 25 July with 6 ft and cross-off wind, but it's a short-period SSE swell (8 seconds) and the energy is moderate (832). Sunday 26 July has 6 ft and clean conditions, but again, it’s short-period stuff. The main event is absolutely that Thursday 23 July session.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Sun night. Warm (max 28°C on Mon morning, min 23°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon night. Warm (max 28°C on Thu morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Fri 17 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 14 | SSW 13 | SW 12 | SW 12 | SSW 11 | SSW 11 | SSW 10 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 8 | E 8 | E 9 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3228 | 3375 | 3465 | 2968 | 3192 | 2697 | 1220 | 784 | 379 | 178 | 215 | 149 | 90 | 82 | 101 | 120 | 164 | 147 | 116 | 94 | 99 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross | cross | cross | cross-off | cross | cross-on | cross | cross | cross-on | glassy | on | on | glassy | on | on | glassy | glassy | cross |
High Tide | 00:16AM1.35m | 4:12PM1.29m | 1:17AM1.38m | 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 | ||||||||
Low Tide | 8:19AM0.26m | 8:23PM1.14m | 9:08AM0.15m | 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 | ||||||||
 |  |  |  | |  |  |  | |  | |  |  | | | | | | | | | |
 | — | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — | 4:37 | — |
 | 6:55 | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 |
mm | — | — | — | — | — | 1 | 6 | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 26 | 26 | 24 | 26 | 25 | 25 | 28 | 27 | 24 | 27 | 26 | 24 | 27 | 27 | 24 | 28 | 28 | 25 | 29 | 29 |
Feels °C | 25 | 27 | 26 | 24 | 27 | 27 | 27 | 30 | 30 | 27 | 29 | 28 | 28 | 29 | 29 | 27 | 31 | 31 | 29 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 14 | SSW 13 | SW 12 | SSW 8 | SSW 11 | SSW 11 | SSW 10 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 8 | E 8 | E 9 | E 9 |
| kJ | 3228 | 3375 | 3465 | 2968 | 3192 | 2697 | 1220 | 784 | 379 | 87 | 215 | 149 | 90 | 82 | 101 | 120 | 164 | 147 | 116 | 94 | 99 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | SSW 6 | SW 12 | E 10 | E 10 | ESE 10 | SSW 10 | SW 9 | SW 9 | SW 9 | SW 8 | SSW 8 | SSE 7 | SSE 6 |
| kJ | 90 | 60 | 58 | 58 | 59 | 40 | 41 | 26 | 72 | 178 | 48 | 48 | 74 | 64 | 42 | 40 | 20 | 18 | 27 | 9 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 14 | SSE 10 | SE 10 | SE 10 | SE 10 | E 9 | E 9 | SE 12 | SE 12 | SE 11 | SE 10 | SE 9 | SE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | SE 9 |
| kJ | — | — | — | 8 | 40 | 24 | 25 | 15 | 26 | 26 | 22 | 21 | 18 | 17 | 14 | 13 | 8 | 18 | 25 | 14 | 21 |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 4 | — | — | SSW 5 | SW 6 | — | — | — | SE 4 | — | — | S 5 | S 4 | SSW 9 | SSW 3 | — | — | SSW 2 |
| kJ | — | — | — | 22 | — | — | 39 | 89 | — | — | — | 3 | — | — | 2 | 7 | 70 | 3 | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 30 | 81 | 70 | 39 | 39 | 6 | 22 | 6 | 6 | 22 | 0 | 30 | 30 | 0 | 30 | 30 | 0 | 0 | 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.
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