Surf Forecasts:
Big Ben surf forecast from 5 Jul 2026:
- Best quality surf: Thursday 9 Jul, 3AM (local time) - 8ft (2.5m), 16s period, S swell with glassy winds.
- Most powerful swell: Saturday 11 Jul, 9AM (local time) - 8ft (2.5m), 17s period, SSW swell with 4,206 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 3AM (local time) - 8ft (2.5m), 16s 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 Thursday (Jul 09) at 3AM. The primary swell is predicted to be 2.5m and 16s period with a secondary swell of 1.1m 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 9AM. 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) | 8ft (2.5m) 16s |
| Best Surf | 3AM (Thu 9th Jul) | 8ft (2.5m) 16s |
| Most Powerful | 9AM (Sat 11th 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, let’s talk in feet and degrees now. This forecast is for Big Ben, an exposed beach-and-jetty setup on the SE side. Water temp is 73°F, which is about 3°F cooler than normal for this time of year – you’ll want a decent wetsuit, that’s for sure.
The first few days are pretty grim. From Sunday the 5th through Tuesday the 7th, it’s all short-period, onshore wind slop – barely a ripple of real surf. A real slow start.
Things finally show some life on Wednesday the 8th. A proper long-period SSE groundswell rolls in, showing around 7ft early on with a 16-second pulse. The combined wave energy is strong (3,463-3,761 on the scale). On the 9th and 10th, the swell picks up to around 8ft out of the S with a 15-16 second period, and the energy stays up in the strong range (2,974 to 3,158). The catch? The wind is mostly a light cross-onshore. Not terrible, but it’s gonna put a bit of chop on the face, and for a beach break, that long-period S swell is going to dump pretty straight and close out.
The real highlight is the morning of Saturday, 11th July. That is the one to mark on the calendar. You’ve got an 8ft SSW swell with a very long 17-second period – that’s proper groundswell with tons of push. The combined energy is at a very strong 4,265. That’s a serious amount of water moving. The swell direction lines up nicely with the optimum for the spot, too. Wind is a gentle cross-on from the S, so it’s not perfect, but it’s the cleanest you’ll see for that kind of size. This one is strictly for experienced surfers – 8ft with that period is no joke. Crowds are listed as “sometimes,” so expect some company if you’re out there.
After the 11th, it’s a steady fade. The 12th and 13th drop off quickly with increasing cross-onshore wind and sloppier conditions. From the 14th right through to the 20th, it’s a long, flat stretch of small, weak, short-period ESE/ENE windswell with no real energy and mostly onshore wind. Not worth a look.
So, the play is Wednesday 8th through Saturday 11th, with Saturday morning the 11th being the standout for the ones who can handle it.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Warm (max 25°C on Tue morning, min 21°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Fri morning, min 21°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sun 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SE 6 | SE 6 | SE 7 | SSE 16 | SE 12 | SSE 15 | SE 14 | SSE 17 | SSE 16 | SSE 16 | S 16 | S 15 | S 15 | S 14 | S 16 | S 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 109 | 150 | 179 | 169 | 220 | 840 | 1463 | 1048 | 2696 | 2649 | 3182 | 2679 | 2491 | 2375 | 2864 | 2352 | 4090 | 4206 | 3277 | 2821 | 2359 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 00:16AM1.35m | 4:12PM1.29m | 1:17AM1.38m | ||||||||
Low Tide | 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 | 6:54PM1.11m | 8:19AM0.26m | 8:23PM1.14m | 9:08AM0.15m | ||||||||
 |  | |  |  | |  |  | | |  | | | | | | | | | | | |
 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:33 | — | — | 4:33 |
 | 6:57 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:55 | — | — | 6:55 | — | 6:54 |
mm | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 22 | 24 | 23 | 22 | 25 | 24 | 22 | 24 | 24 | 22 | 24 | 24 | 22 | 25 | 25 | 23 | 25 | 25 | 23 | 25 |
Feels °C | 24 | 23 | 24 | 23 | 23 | 25 | 24 | 23 | 25 | 25 | 24 | 26 | 25 | 23 | 26 | 26 | 25 | 26 | 26 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | SE 6 | SE 7 | SE 12 | SE 12 | SSE 15 | SE 14 | ESE 8 | SSE 16 | SSE 16 | S 16 | S 15 | S 15 | S 14 | S 16 | S 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
| kJ | 19 | 150 | 173 | 151 | 220 | 840 | 1463 | 310 | 2696 | 2649 | 3182 | 2679 | 2491 | 2375 | 2864 | 2352 | 4090 | 4206 | 3277 | 2821 | 2359 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | SE 14 | SE 14 | SSE 16 | SSE 15 | ESE 7 | SSE 19 | SSE 17 | ESE 9 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 9 | ESE 8 | SSW 19 | ESE 9 | E 9 | E 9 | E 9 | E 9 |
| kJ | 35 | 54 | 179 | 169 | 201 | 139 | 214 | 1048 | 322 | 212 | 202 | 134 | 144 | 129 | 115 | 716 | 96 | 59 | 56 | 40 | 41 |
Swell 3 Height (m) Direction Period (s) | NE 9 | ESE 11 | SE 17 | ENE 8 | SW 6 | — | NE 7 | SSE 13 | S 21 | S 19 | — | E 8 | E 8 | E 9 | — | ESE 8 | — | — | SSE 10 | SE 9 | SE 10 |
| kJ | 3 | 22 | 76 | 11 | 2 | — | 2 | 520 | 445 | 900 | — | 161 | 169 | 151 | — | 90 | — | — | 43 | 43 | 36 |
Wind waves Height (m) Direction Period (s) | SE 6 | — | — | ESE 7 | ESE 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 109 | — | — | 154 | 162 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 81 | 29 | 29 | 48 | 29 | 29 | 48 | 29 | 22 | 29 | 29 | 29 | 30 | 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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