Surf Forecasts:
Big Ben surf forecast from 19 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 6AM (local time) - 3.5ft (1.0m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 21 Jul, 12AM (local time) - 4.5ft (1.3m), 11s period, E swell with 410 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 6AM (local time) - 3.5ft (1.0m), 10s 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 Wednesday (Jul 22) at 6AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.2m and 8s. Another secondary swell of 0.6m and 4s is also forecast. 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 1.3m 11s and forecast to arrive on Tuesday (Jul 21) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Thursday (Jul 23) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 22nd Jul) | 3.5ft (1.0m) 10s |
| Best Surf | 6AM (Wed 22nd Jul) | 3.5ft (1.0m) 10s |
| Most Powerful | 12AM (Tue 21st Jul) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what's coming up.
First off, Big Ben is looking pretty quiet for the next week or so. The first few days are a total loss – poor surf, cross-onshore winds, and a combined wave energy of 243 (moderate) just isn't doing the job. Sunday and Monday are a bust. The week ahead is mostly flat and messy. The morning of Thursday the 23rd will have a glassy surface, but with a tiny 3ft swell from the ENE, it's barely rideable.
There's a big gap before anything good shows up. The first real sign of life is the morning of Monday the 28th of July. We've got glassy conditions and a clean 3ft SSW groundswell with a 14-second period. The combined energy is a solid 729 (strong). For a beginner spot, this is a perfect small, clean day.
The one to really get excited about is the morning of Wednesday the 29th of July. You're looking at a clean 5ft SSW swell with a 14-second period and a cross-offshore wind. The combined energy hits 1000 (very strong), and the forecast is calling for excellent conditions for experienced surfers. That's the day. It's not too big for the crew that knows what they're doing, and that long period means proper groundswell. There can be a crowd here *sometimes*, but for a morning session like that, it's worth it.
Water temp is 78°F, which is pretty average for the time of year.
After that, the swell sticks around but the wind gets messy. The afternoon of the 30th has a 6ft SW swell, but it's onshore and choppy – that's more of a kite-surfing day. And by the 3rd of August, the swell is a massive 12ft to 13ft from the ESE with a 17-18 second period. That's a monster. The combined energy is off the charts at 8077-9468 (very strong), but it's way too big for this break. Experts only, and even then the wind is onshore. So, the takeaway is: wait for the 28th, and don't miss the morning of the 29th.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Tue morning, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Thu night. Warm (max 31°C on Wed morning, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
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) | E 9 | E 9 | E 9 | E 9 | E 8 | E 11 | E 11 | ENE 10 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 9 | E 9 | SE 11 | SE 16 | SE 16 | SE 10 | SE 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 166 | 162 | 129 | 120 | 116 | 410 | 326 | 276 | 204 | 204 | 163 | 160 | 128 | 117 | 83 | 81 | 59 | 91 | 90 | 49 | 78 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | glassy | cross-on | off | cross | cross-on | cross | cross-on | on | on |
High Tide | 8:00PM1.43m | 7:39AM1.31m | 8:26PM1.41m | 8:37AM1.20m | 8:54PM1.39m | 9:58AM1.10m | 9:25PM1.38m | 12:17PM1.05m | 10:06PM1.36m | 3:23PM1.15m | 11:05PM1.35m | 4:08PM1.27m | 00:24AM1.35m | ||||||||
Low Tide | 1:23PM0.36m | 1:57AM0.70m | 1:55PM0.52m | 2:46AM0.65m | 2:25PM0.68m | 3:46AM0.60m | 2:55PM0.85m | 5:01AM0.55m | 3:28PM1.01m | 6:26AM0.47m | 4:56PM1.15m | 7:40AM0.36m | 7:43PM1.20m | ||||||||
 |  |  | | | | | | | |  | | | |  | | |  | | | | |
 | 4:37 | — | — | 4:39 | — | — | 4:39 | — | — | 4:39 | — | — | 4:41 | — | — | 4:41 | — | — | 4:41 | — | — |
 | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | 7 | — | — | — | 1 | 1 | — |
Temp °C | 28 | 28 | 26 | 30 | 30 | 26 | 31 | 30 | 27 | 31 | 30 | 27 | 30 | 30 | 26 | 28 | 28 | 25 | 27 | 28 | 26 |
Feels °C | 30 | 30 | 30 | 33 | 33 | 30 | 34 | 33 | 31 | 34 | 33 | 32 | 34 | 35 | 32 | 32 | 31 | 28 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 8 | E 11 | E 11 | ENE 10 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 8 | SE 10 | E 8 |
| kJ | 166 | 162 | 129 | 120 | 116 | 410 | 326 | 276 | 204 | 204 | 163 | 160 | 128 | 117 | 83 | 81 | 59 | 56 | 36 | 49 | 33 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | SSE 7 | SE 7 | ENE 14 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | ESE 11 | SE 11 | SW 5 | SSW 6 | SSE 10 | SE 9 | SE 11 | SE 10 | SE 10 | E 8 | SE 10 |
| kJ | 11 | 11 | 30 | 12 | 64 | 13 | 13 | 12 | 11 | 5 | 11 | 29 | 14 | 13 | 38 | 23 | 57 | 53 | 48 | 35 | 50 |
Swell 3 Height (m) Direction Period (s) | ESE 12 | ESE 12 | S 8 | S 8 | SE 8 | SE 11 | SW 8 | ESE 11 | ESE 11 | ESE 11 | SSE 7 | SE 20 | SE 10 | SE 10 | SW 5 | SSW 7 | SE 16 | SE 16 | SE 16 | E 4 | SE 15 |
| kJ | 14 | 15 | 5 | 4 | 18 | 5 | 2 | 12 | 12 | 11 | 5 | 15 | 25 | 25 | 6 | 5 | 43 | 91 | 90 | 5 | 78 |
Wind waves Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSW 3 | SW 3 | SW 4 | SW 4 | SW 4 | SW 4 | SSW 4 | SW 4 | SW 4 | SW 5 | — | — | — | NE 4 | ENE 4 | ENE 4 | E 4 | — | SSE 3 |
| kJ | 52 | 64 | 4 | 3 | 10 | 9 | 12 | 12 | 10 | 9 | 16 | 12 | — | — | — | 10 | 16 | 10 | 9 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 30 | 30 | 35 | 35 | 30 | 35 | 30 | 0 | 35 | 18 | 0 | 30 | 0 | 6 | 22 | 6 | 22 | 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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