
Surf Forecasts:
Big Ben surf forecast from 9 Jul 2026:
- Best quality surf: Monday 13 Jul, 12AM (local time) - 6ft (1.8m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 12 Jul, 12AM (local time) - 8ft (2.5m), 17s period, SSW swell with 4,080 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 12AM (local time) - 6ft (1.8m), 15s period with SW 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 12AM. The primary swell is predicted to be 1.8m and 15s period with a secondary swell of 0.5m and 9s. 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 17s and forecast to arrive on Sunday (Jul 12) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 13th Jul) | 6ft (1.8m) 15s |
| Best Surf | 12AM (Mon 13th Jul) | 6ft (1.8m) 15s |
| Most Powerful | 12AM (Sun 12th Jul) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Rightio, Rusty here. Let’s have a look at what’s cookin’ for the next couple of weeks. We’ve got a bit of a slow start, but there’s some solid stuff brewing later on.
First up, the water’s a bit colder than normal for this time of year, runnin’ about 74.3°, so you’ll want a step up in your rubber if you’re feelin’ the chill.
The real action kicks off on Thursday, July 9th, at Big Ben. It’s a beach/jetty setup, exposed to the swell, and it’s inconsistent, so don’t expect a wave every minute. Thursday morning is the standout right out of the gate: a clean 6.6 ft SSE swell with a 14-second period – that’s proper groundswell, so it’ll have some punch. The wind is glassy, dead calm, which is a massive win. The combined energy of all swells is a solid 1948, so there’s plenty of juice. This is excellent surf, but at 6.6 ft, it’s getting into the zone for experienced surfers only. Crowds are possible here, so you might have some company.
Thursday afternoon sees the wind shift onshore, and the quality drops. Friday, July 10th, is a write-off with cross-onshore winds and choppy conditions. Saturday and Sunday are the same story – plenty of swell (8.2 ft on Saturday, 8.2 ft on Sunday) with that long 17-second period, but the wind is cross-on or cross, making it messy. The energy is pumping (over 4100 on Saturday), but it’s just not clean.
After a few days of poor conditions, Monday, July 13th, offers a little window. The swell drops to 4.6 ft from the SW, but the wind flips to cross-offshore in the morning and then glassy in the afternoon. It’s clean, but the wave height is small. The energy is down to 867, so it’s a weak, fun-sized day.
Then we hit a dry spell. From Tuesday, July 14th, right through to Saturday, July 18th, it’s a mix of tiny swell and onshore wind. Not worth paddling out. That’s about five days of flat, choppy nothing.
The next real chance comes on Sunday, July 19th. The swell jumps back up to 6.9 ft from the SE with a 13-second period, and the energy is back up to 1480. The wind is light cross-onshore, so it’s not perfect, but it’s a step up. Marginal, but possible.
The true standout, though, is Monday, July 20th. The morning is glassy, dead calm, with a 7.2 ft SSE swell and a 12-second period. The combined energy is 1563 – strong, solid. This is described as excellent surf for experienced surfers. The wind is glassy, so it’ll be clean as a whistle. The swell direction matches the optimum (SE), so the break should be working perfectly. This is the best session on offer in the whole outlook. Monday afternoon gets a bit cross-shore and choppy, but the morning is a winner.
After that, the swell backs off into Tuesday and Wednesday, July 21st and 22nd, with smaller waves and cross or cross-offshore winds. Nothing to write home about. Thursday, July 23rd, has a tiny glassy morning, but it’s small.
In short: The surf is inconsistent overall, but don’t get too down – it tends not to stay flat for long. The absolute best bet is the glassy morning of Monday, July 20th, at Big Ben. Set your alarm for that one.
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 23°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Sun night. Warm (max 27°C on Tue morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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) | SSE 14 | S 14 | S 14 | S 14 | S 16 | SSW 16 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SW 16 | SW 15 | SW 14 | SSW 13 | SSW 12 | SW 12 | SSW 11 | ESE 10 | ESE 9 | ESE 9 | ESE 8 |
Wave Graph | |||||||||||||||||||||
1421 | 1762 | 1968 | 1387 | 2668 | 3188 | 4048 | 4060 | 4080 | 3528 | 2660 | 1511 | 788 | 599 | 304 | 87 | 183 | 105 | 130 | 151 | 90 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:37PM1.08m | 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 | ||||||||
Low Tide | 5:09PM1.01m | 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 | ||||||||
4:31 | — | — | 4:31 | — | — | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:35 | — | — | 4:35 | — | — | |
— | 6:55 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 11 | 1 | 2 | 2 | — | — | — | — | — | — |
Temp °C | 26 | 26 | 23 | 27 | 26 | 23 | 26 | 26 | 24 | 24 | 24 | 24 | 25 | 26 | 24 | 27 | 26 | 24 | 27 | 27 | 24 |
Feels °C | 28 | 28 | 26 | 29 | 27 | 26 | 27 | 26 | 25 | 26 | 26 | 27 | 29 | 30 | 28 | 29 | 27 | 27 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 14 | S 14 | S 14 | S 14 | S 16 | SSW 16 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SW 16 | SW 15 | SW 14 | SSW 13 | SSW 12 | SSW 10 | SSW 11 | ESE 10 | ESE 9 | ESE 9 | ESE 8 |
1421 | 1762 | 1968 | 1387 | 2668 | 3188 | 4048 | 4060 | 4080 | 3528 | 2660 | 1511 | 788 | 599 | 304 | 85 | 183 | 105 | 130 | 151 | 90 | |
Swell 2 Height (m) Direction Period (s) | S 16 | E 8 | ESE 8 | SSW 16 | E 10 | E 10 | E 9 | E 9 | E 9 | ESE 9 | E 9 | E 9 | ESE 9 | E 9 | E 9 | ESE 9 | E 10 | SSW 10 | SW 10 | SW 10 | E 9 |
432 | 100 | 109 | 854 | 122 | 90 | 61 | 60 | 58 | 62 | 57 | 43 | 64 | 42 | 42 | 69 | 47 | 68 | 48 | 44 | 27 | |
Swell 3 Height (m) Direction Period (s) | E 8 | E 9 | E 8 | E 10 | — | — | — | — | SE 14 | SE 10 | SE 10 | SE 10 | SE 10 | SE 12 | SE 12 | SW 12 | SE 9 | S 14 | S 14 | S 13 | SE 11 |
95 | 122 | 100 | 120 | — | — | — | — | 8 | 27 | 25 | 24 | 15 | 36 | 22 | 87 | 19 | 4 | 4 | 4 | 5 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 4 | SSW 4 | SSW 4 | SSW 5 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 12 | 11 | 13 | 44 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 38 | 30 | 0 | 0 | 0 | 30 | 30 | 30 | 30 | 30 | 30 | 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.










