
Surf Forecasts:
Big Ben surf forecast from 18 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 folks, Rusty here. Let’s get into it. We’ve got a pretty quiet stretch ahead for Big Ben, with a long wait for anything that’s really worth paddling out for. The first week and a half is mostly a write-off, so don’t be in a rush.
For the first several days, starting Sunday the 19th through to the end of July, the surf is small, messy, and the wind is just not playing ball. The combined energy is weak to moderate, bouncing around the 130 to 380 mark, but the quality is poor. We’ve got cross and cross-onshore breezes churning things up, and the swell is mostly short-period stuff around 8 to 11 seconds, which just doesn’t pack a punch. The water temp is a balmy 78° – pretty much bang on average for this time of year, so no surprises there.
There is a brief glimmer on Wednesday morning, the 22nd. The wind goes glassy, which is a big positive, and the swell is tiny at 3ft from the ENE with a 10-second period. The combined energy is only 178, so it’s weak, but the clean surface will make it look better than it is. It’s surfable, but very ordinary. Not a standout.
The real action, and I mean the only real reason to get excited, happens way down the track. From Tuesday the 28th of July, the energy starts to ramp up. The combined swell energy jumps hard, hitting 933 on Tuesday morning, and then it just keeps climbing. By Wednesday the 29th, we’re looking at 8ft S swell with a 15-second period, and the combined energy is 2769. That’s strong. But here’s the thing – the wind is cross, bumping it up, so it’s messy. The surf is marginal, and for a beach/jetty setup like Big Ben, that long period groundswell can make it break a bit straight, which is a caveat.
The biggest swell of the period hits on Thursday the 30th of July. An 11ft S swell, 15-second period, with the combined energy roaring to 5675. That is very strong wave energy. But the wind is onshore from the ESE, and the file says it’s too big for this break. This is expert territory only, and honestly, it’s going to be a washing machine. The same goes for Monday the 3rd of August, with a 10ft SE swell and 5336 combined energy. Too big, too messy.
If you’re a beginner, steer clear of the last week. The best bet for a seasoned surfer is Tuesday the 28th of July, morning session. The swell is 5ft from the S, period 14 seconds, and the combined energy is 933. The wind is light cross-shore, so it’s not glassy, but it’s the most manageable of the bigger days. The crowd factor is “sometimes,” so expect company. Still, with the long period, keep an eye on the tide and try to find a rip to help you get out.
To sum it up: the first week is a dud. The second week has size, but it’s raw and mostly blown out. The best of a not-great bunch is that Tuesday the 28th.
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 22°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 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 9 | E 9 | SE 11 | SE 16 | SE 16 | SE 16 | SE 10 |
Wave Graph | |||||||||||||||||||||
166 | 162 | 129 | 120 | 116 | 410 | 332 | 281 | 204 | 163 | 163 | 160 | 125 | 120 | 83 | 59 | 57 | 91 | 90 | 87 | 50 | |
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 | glassy | cross | glassy | cross | cross-on | cross-off | cross | cross-on | cross-off | cross | cross | cross-off |
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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | — | — | 3 | — | 1 | 1 |
Temp °C | 28 | 28 | 26 | 30 | 30 | 26 | 31 | 30 | 27 | 31 | 30 | 27 | 29 | 30 | 27 | 27 | 26 | 23 | 26 | 25 | 22 |
Feels °C | 30 | 30 | 30 | 33 | 33 | 30 | 34 | 33 | 32 | 35 | 34 | 32 | 34 | 35 | 32 | 29 | 27 | 24 | 27 | 26 | 23 |
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 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | SE 10 |
166 | 162 | 129 | 120 | 116 | 410 | 332 | 281 | 204 | 163 | 163 | 160 | 125 | 120 | 83 | 59 | 57 | 55 | 36 | 50 | 50 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | S 8 | SSE 7 | SE 7 | ENE 14 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SW 4 | SSE 7 | SSW 5 | SSW 5 | SSW 6 | SSE 10 | SE 9 | SE 11 | SE 10 | SE 10 | SE 10 | ENE 6 |
40 | 11 | 36 | 12 | 64 | 13 | 13 | 12 | 11 | 9 | 5 | 8 | 10 | 13 | 38 | 23 | 57 | 53 | 48 | 49 | 15 | |
Swell 3 Height (m) Direction Period (s) | S 8 | ESE 12 | S 8 | S 8 | SE 8 | SE 11 | SE 11 | SE 11 | ESE 11 | SSE 8 | ESE 11 | SSE 11 | SE 10 | SE 10 | SW 5 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | E 8 |
11 | 15 | 10 | 4 | 18 | 5 | 19 | 19 | 12 | 6 | 11 | 11 | 25 | 25 | 7 | 49 | 43 | 91 | 90 | 87 | 21 | |
Wind waves Height (m) Direction Period (s) | — | SSE 8 | SSE 7 | SW 3 | SW 4 | SW 4 | SW 4 | SW 4 | SSW 4 | — | SSW 4 | SW 5 | — | — | — | NE 3 | ENE 4 | NE 4 | NE 4 | — | SSW 4 |
— | 50 | 42 | 3 | 10 | 9 | 11 | 12 | 11 | — | 7 | 11 | — | — | — | 3 | 8 | 7 | 4 | — | 2 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 30 | 30 | 35 | 35 | 30 | 35 | 30 | 0 | 30 | 0 | 11 | 183 | 0 | 35 | 229 | 0 | 35 | 35 | 0 |
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.










