Surf Forecasts:
Big Ben surf forecast from 3 Jul 2026:
- Best quality surf: Thursday 9 Jul, 12AM (local time) - 8ft (2.5m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 6AM (local time) - 8ft (2.5m), 17s period, S swell with 3,836 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 12AM (local time) - 2ft (0.6m), 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 12AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.5m and 4s. Another secondary swell of 0.6m 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 2.5m 17s and forecast to arrive on Friday (Jul 10) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 8s period and expected on Monday (Jul 06) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 5th Jul) | 2ft (0.6m) 8s |
| Best Surf | 12AM (Thu 9th Jul) | 8ft (2.5m) 16s |
| Most Powerful | 6AM (Fri 10th Jul) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here, looking at the waves for Big Ben over the next couple of weeks. It’s gonna be a slow start, so keep your expectations low.
The first few days, from Saturday the 4th through Monday the 6th, are a total bust. Onshore winds and rain with weak, short-period swell. The combined wave energy is a sad 52 to 523, which means there’s no power and no shape. Don’t even bother.
Things start to change on Tuesday the 7th. Swell builds to about 7ft from the ESE, but the wind is still a messy cross-onshore. It’s a borderline call with moderate energy (2153), and it’s not great. The period jumps to 17 seconds Tuesday afternoon, a proper groundswell, but that cross-onshore breeze ruins it.
Now, here’s the good part. By Wednesday the 8th, the swell is pumping at 8ft from the SSE with a long 16-second period. The combined energy is cranking at 4326. The wind is light cross-shore, so it’s still a bit lumpy. It’s doable for experienced surfers, but the best is yet to come.
Thursday the 9th morning is the real standout. We get clean, glassy 8ft S swell with a 15-second period. The energy is a monster 3280, and with no wind (“Slight air”), it’s going to be firing. This is big-wave territory—over 8ft means it's for experts only. Water temp is about average for this time of year, nothing special.
Friday the 10th morning is another gem: glassy conditions again with a similar 8ft S swell, period up to 17 seconds, and energy at 3886. Expect long, clean lines but long waits. Saturday the 11th morning also offers glassy 8ft SSW swell at a 16-second period. For the second week, your best bet is those Thursday, Friday, and Saturday mornings.
After that, the swell fades hard. By Sunday the 12th, it drops to 7ft, still clean but smaller, and by the following week it’s tiny again with weak energy below 600. From Monday the 13th onward, it’s a long stretch of nothing good, just tiny, weak pulses you won’t want to paddle out for.
Keep in mind, Big Ben is a beach/jetty setup that’s *inconsistent*, so it doesn’t fire off often. When we get a window like Thursday and Friday mornings, you need to be on it. The spot gets a crowd “sometimes,” so don't expect a solo mission, but it’s worth the company.
Best Bets: Thursday 9th and Friday 10th mornings. Get out there.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Sun night. Warm (max 24°C on Mon morning, min 21°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Thu morning, min 20°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Fri 10 | |||||||||||||||
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) | ENE 7 | ENE 7 | ENE 8 | E 8 | SE 5 | SE 5 | SE 6 | ESE 7 | ESE 7 | ESE 8 | ESE 10 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | S 15 | S 16 | S 15 | S 17 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 42 | 38 | 67 | 46 | 41 | 79 | 201 | 263 | 327 | 612 | 788 | 1907 | 1766 | 3465 | 2615 | 3529 | 2902 | 3287 | 2947 | 3739 | 3563 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | on | glassy | on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | glassy | glassy | on | glassy | glassy | cross-on |
High Tide | 6:25AM1.39m | 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 | ||||||||
Low Tide | 1:06AM0.88m | 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 | ||||||||
 |  |  |  | | |  | |  | | |  |  | | | | | | | | | |
 | — | 4:28 | — | — | 4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — |
 | 6:57 | — | 6:57 | — | — | 6:57 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:55 |
mm | — | 3 | 2 | 4 | 3 | 2 | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 23 | 22 | 23 | 23 | 21 | 24 | 23 | 21 | 24 | 24 | 21 | 24 | 24 | 21 | 26 | 26 | 22 | 27 | 26 |
Feels °C | 24 | 24 | 24 | 25 | 25 | 23 | 21 | 24 | 22 | 21 | 23 | 23 | 21 | 24 | 24 | 22 | 28 | 28 | 26 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | E 8 | ENE 8 | ESE 10 | SE 14 | SE 14 | ESE 7 | ESE 8 | ESE 9 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | S 15 | S 16 | S 15 | S 17 | S 16 |
| kJ | 42 | 38 | 67 | 46 | 19 | 35 | 54 | 179 | 327 | 414 | 455 | 1907 | 1766 | 3465 | 2615 | 3529 | 2902 | 3287 | 2947 | 3739 | 3563 |
Swell 2 Height (m) Direction Period (s) | SSE 6 | SSE 5 | NE 10 | S 4 | ESE 10 | ENE 8 | ESE 11 | SSW 7 | SE 13 | SE 10 | SSE 16 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 8 |
| kJ | 10 | 6 | 16 | 9 | 20 | 12 | 38 | 5 | 190 | 132 | 733 | 392 | 446 | 277 | 284 | 250 | 176 | 144 | 129 | 147 | 122 |
Swell 3 Height (m) Direction Period (s) | SW 7 | SW 7 | WSW 7 | SE 9 | SSE 10 | SSE 10 | SSE 18 | NE 8 | ENE 8 | SE 12 | SE 10 | SE 10 | SSE 18 | S 21 | S 18 | — | ESE 8 | — | ESE 9 | — | — |
| kJ | 13 | 7 | 4 | 13 | 9 | 9 | 31 | 3 | 6 | 126 | 177 | 147 | 1215 | 584 | 1328 | — | 202 | — | 162 | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 2 | SSE 5 | S 4 | SE 5 | SE 5 | SE 6 | ESE 7 | — | ESE 8 | ESE 10 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 15 | 12 | 41 | 79 | 201 | 263 | — | 612 | 788 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 30 | 565 | 0 | 534 | 576 | 55 | 48 | 48 | 22 | 29 | 29 | 29 | 22 | 29 | 0 | 0 | 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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