Surf Forecasts:
Big Ben surf forecast from 8 Jul 2026:
- Best quality surf: Thursday 9 Jul, 3AM (local time) - 7ft (2.2m), 14s period, SSE swell with glassy winds.
- Most powerful swell: Saturday 11 Jul, 6AM (local time) - 8ft (2.5m), 17s period, SSW swell with 4,143 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 3AM (local time) - 7ft (2.2m), 14s period with SSE 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 Thursday (Jul 09) at 3AM. The primary swell is predicted to be 2.2m and 14s period with a secondary swell of 1.0m 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 17s and forecast to arrive on Saturday (Jul 11) at 6AM. 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+) | 3AM (Thu 9th Jul) | 7ft (2.2m) 14s |
| Best Surf | 3AM (Thu 9th Jul) | 7ft (2.2m) 14s |
| Most Powerful | 6AM (Sat 11th Jul) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Alright, it's Rusty again. Let's take a look at what Big Ben is serving up.
Right off the bat, we've got some solid swell lining up, but the wind is going to be a bit of a spoiler for the first few days. The water temp is about 74°, which is a bit cooler than usual for this time of year. The first few days offer some size, but the wind is mostly side or side-on, which will keep things a little lumpy. The real standout, and I mean the *standout*, is shaping up to be Monday the 20th and Tuesday the 21st. That's a serious window of opportunity, but it comes with a major caveat.
For the here and now, Wednesday the 8th has a solid 8ft SSE swell with a 16-second period, but the side wind from the ENE will put a bit of a chop on the face. It’s a beginner-friendly spot, but with that size, it might be a bit much for the total newbie. The combined energy is strong at 3053. Thursday and Friday see the swell dropping a touch, but the wind is onshore or side-on, which isn't ideal. Saturday the 11th pumps up to 8ft from the SSW, but that moderate side-onshore wind will make it choppy. The energy is very high, hitting 4155, but the quality won't be there for a clean session.
Things fade out from Sunday the 12th into the middle of the week, with smaller, weaker swells and messy winds. There's a long gap of days with very poor quality surf.
Now, the pay-off. Monday the 20th looks massive. We’re talking a 15ft ESE swell, reading a huge 8963 on the energy scale. The period is 15 seconds, so it’s a proper groundswell. The wind is a gentle side-shore from the NE, which is manageable. But the warning is clear: this is too big for this break. This is expert-only territory, and even then, it’s going to be heavy. The break is a beach/jetty, and with that long period, the waves might be a bit unruly. Tuesday the 21st is the true gem. The swell is still pumping at 12ft from the E, energy is 3434, and the wind is *glassy*. Glassy! That’s a huge positive. For that morning session, if you can handle the size, the conditions will be as clean as it gets. But again, 12ft is steep for a beginner spot. After that, the swell drops back down and the wind turns messy again.
So, the best on offer is the glassy morning of Tuesday July 21st for the big-wave crew, with Monday the 20th as a close second, but only for those with the skills and the nerve. The rest of the window is mostly a wait-and-see game.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Thu morning, min 22°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Mon morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
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 16 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | S 14 | S 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SE 9 | ESE 9 | ESE 10 | SSE 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2900 | 1928 | 1939 | 1421 | 1762 | 1585 | 1387 | 2352 | 3686 | 4095 | 3277 | 2856 | 2567 | 2146 | 1045 | 799 | 364 | 132 | 165 | 226 | 986 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 11:16AM1.05m | 10:30PM1.34m | 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 | ||||||||
Low Tide | 3:58PM0.87m | 6:12AM0.51m | 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 | ||||||||
 |  |  | | | | | | | | |  | | | | | | | | | | |
 | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:35 | — | — |
 | — | 6:55 | — | — | 6:55 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 23 | 26 | 26 | 23 | 26 | 26 | 23 | 26 | 26 | 23 | 26 | 26 | 24 | 27 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 26 | 26 | 26 | 28 | 28 | 26 | 28 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 26 | 28 | 27 | 26 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 16 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | S 14 | S 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SE 9 | ESE 9 | ESE 10 | SSE 15 |
| kJ | 2900 | 1928 | 1939 | 1421 | 1762 | 1585 | 1387 | 2352 | 3686 | 4095 | 3277 | 2856 | 2567 | 2146 | 1045 | 799 | 364 | 132 | 165 | 226 | 986 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | S 16 | E 8 | S 17 | SSW 16 | SSW 20 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | SE 10 | SE 10 | SE 8 | SSW 12 | SW 11 | SSW 11 | ESE 9 |
| kJ | 153 | 124 | 120 | 432 | 100 | 562 | 988 | 731 | 87 | 60 | 58 | 59 | 57 | 62 | 24 | 58 | 66 | 106 | 123 | 76 | 312 |
Swell 3 Height (m) Direction Period (s) | — | S 19 | E 8 | E 8 | E 9 | E 8 | E 8 | ESE 10 | — | — | — | SE 10 | SE 10 | SE 10 | SE 13 | E 9 | E 9 | SW 12 | SE 11 | S 13 | SW 10 |
| kJ | — | 455 | 120 | 95 | 122 | 105 | 63 | 128 | — | — | — | 26 | 27 | 25 | 7 | 37 | 41 | 89 | 45 | 90 | 49 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 9 | — | SSE 9 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 132 | — | 129 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 35 | 30 | 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.
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