
Surf Forecasts:
Big Ben surf forecast from 9 Jul 2026:
- Best quality surf: Friday 10 Jul, 6AM (local time) - 7.5ft (2.3m), 14s period, S swell with glassy winds.
- Most powerful swell: Sunday 12 Jul, 6AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,726 kJ wave energy.
- Next surfable swell (1★+): Friday 10 Jul, 6AM (local time) - 7.5ft (2.3m), 14s period with S 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 Friday (Jul 10) at 6AM. The primary swell is predicted to be 2.3m and 14s period with a secondary swell of 0.8m and 8s. 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 2.5m 16s and forecast to arrive on Sunday (Jul 12) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Wednesday (Jul 15) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 10th Jul) | 7.5ft (2.3m) 14s |
| Best Surf | 6AM (Fri 10th Jul) | 7.5ft (2.3m) 14s |
| Most Powerful | 6AM (Sun 12th Jul) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Alright, let’s get into it. Rusty here.
First up, we’re looking at a patchy run for Big Ben. This is a beach and jetty setup, exposed to the swell, but it’s inconsistent—it doesn’t break all that often, so when it does, you gotta pay attention. The water’s sitting at 74°, which is a bit colder than normal for this time of year, about 2° off the average. Not a huge shock, but worth a wetsuit if you’re sensitive.
The opening window is Thursday afternoon, July 9th, with 7ft of S swell at 14 seconds, but the wind is onshore from the SE at 6 mph and the conditions are marginal. The combined energy is moderate (1984). Not great, not terrible, but the wind and tide are questionable. Friday morning, July 10th, sees a slight drop to 6ft from the S, still 14 seconds, but the wind is a light cross-onshore, making for small wind ripples. The energy is moderate (2361). Friday afternoon picks up to 8ft, S swell at 16 seconds, but the wind goes to 12 mph cross-onshore, choppy and messy. The energy is moderate (2796). Saturday, July 11th, is similar—8ft from the SSW, 16 seconds, but cross-onshore wind at 12 mph, making for poor conditions. Energy is moderate (3435–3623). Sunday, July 12th, stays in the 7–8ft range, cross-shore wind, still not clean. The swell is too big for beginners, over 8ft on Saturday, and the period over 15 seconds means it’s a long-period groundswell—waves will have more power and shape, but at a beach break like this, it might break too straight. Better suited for a point or reef, but here it’s just a messy, choppy grind.
Now, the standout window. Monday morning, July 13th, is the best we’ve got. The swell drops to 5ft from the SW, 13 seconds, and the wind turns offshore from the NNW at just 3 mph. That’s clean surf, with combined energy at 789—moderate, but with those conditions, it’s the pick of the bunch. The water temp anomaly is still a bit colder than normal, but the offshore wind will make it worth it. This is the only real clean session in the first week. After that, Monday afternoon goes to 4ft with cross-onshore wind, and it’s all downhill from there.
From Tuesday, July 14th, through to Wednesday, July 22nd, the surf is small to flat, with poor conditions and wind mostly onshore or cross-onshore. There’s a gap of about 8 days without a decent recommendation. Energy values drop to 100–300 range, weak. Tuesday, July 21st, has a glassy morning with 2ft from the SSW—glassy, but the swell is tiny. Not worth a paddle out unless you’re desperate.
Thursday, July 23rd, shows a small bump to 3ft from the ESE, 14 seconds, but cross-onshore wind. Marginal. Friday, July 24th, has 4ft from the E, 11 seconds, but again cross-onshore wind at 12 mph. Not the one.
So, overall, Monday morning, July 13th, is your best bet. The offshore wind and 5ft swell will give you clean, fun waves. The long period means longer waits between sets, but the shape should be good. Crowds are possible here, so don’t expect solitude. If you can’t make that, the rest of the window is a write-off—small, choppy, and mostly onshore. For the bigger days earlier in the week, with 8ft swell and strong cross-onshore wind, this spot looks more interesting for kite surfing than paddle surfing. But for a proper surf, Monday morning is the one.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 26°C on Fri morning, min 23°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Sun night. Warm (max 27°C on Wed morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||
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) | S 14 | S 14 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SSW 15 | SW 14 | SSW 13 | SW 12 | SW 12 | SSW 11 | SSW 10 | SSW 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
Wave Graph | |||||||||||||||||||||
1968 | 1387 | 2668 | 2980 | 3375 | 3522 | 3152 | 3360 | 2660 | 1655 | 788 | 581 | 341 | 91 | 170 | 118 | 86 | 77 | 140 | 154 | 123 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross | glassy | glassy | on | cross-on | cross | cross-on | cross | cross | cross-on |
High Tide | 11:19PM1.34m | 3:18PM1.19m | 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 | ||||||||
Low Tide | 7:21AM0.39m | 6:54PM1.11m | 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 | ||||||||
— | 4:31 | — | — | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | |
6:55 | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | |
mm | — | — | — | — | — | — | — | — | 2 | 11 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 26 | 26 | 23 | 25 | 26 | 24 | 25 | 25 | 25 | 26 | 25 | 24 | 26 | 26 | 24 | 27 | 27 | 25 | 28 | 27 |
Feels °C | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 28 | 28 | 28 | 28 | 30 | 28 | 27 | 28 | 28 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SSW 15 | SW 14 | SSW 13 | SW 12 | SSW 11 | SSW 11 | SSW 10 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
1968 | 1387 | 2668 | 2980 | 3375 | 3522 | 3152 | 3360 | 2660 | 1655 | 788 | 581 | 341 | 91 | 170 | 118 | 60 | 77 | 140 | 154 | 123 | |
Swell 2 Height (m) Direction Period (s) | E 8 | SSW 16 | ESE 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 10 | E 10 | E 10 | SSW 10 | SW 10 | SSW 9 | SW 9 | SW 8 |
105 | 854 | 128 | 90 | 60 | 58 | 58 | 59 | 41 | 41 | 42 | 42 | 41 | 72 | 49 | 68 | 86 | 44 | 32 | 20 | 18 | |
Swell 3 Height (m) Direction Period (s) | E 8 | E 10 | — | — | — | — | SE 10 | SSE 10 | SE 10 | SE 10 | SE 10 | SE 12 | SE 5 | SW 12 | SE 12 | SE 11 | SE 11 | SSE 9 | S 13 | SE 11 | SE 10 |
100 | 120 | — | — | — | — | 27 | 40 | 25 | 23 | 15 | 37 | 4 | 89 | 22 | 29 | 18 | 8 | 3 | 5 | 16 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 4 | SSW 4 | — | — | — | — | — | SSE 4 | — | SSW 3 | — | SSW 3 | S 3 | SSW 3 | SSW 3 |
— | — | — | — | — | — | 23 | 22 | — | — | — | — | — | 7 | — | 3 | — | 2 | 5 | 4 | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 30 | 30 | 30 | 30 | 81 | 70 | 70 | 29 | 0 | 6 | 0 | 0 | 30 | 30 | 30 | 30 | 35 | 120 | 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.











