
Surf Forecasts:
Big Ben surf forecast from 23 Jul 2026:
- Best quality surf: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with glassy winds.
- Most powerful swell: Saturday 25 Jul, 12AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 91 kJ wave energy.
- Next surfable swell (1★+): Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period with SE 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 Saturday (Jul 25) at 3AM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.5m and 10s is also forecast. 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Tuesday (Jul 28) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
| Best Surf | 3AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
| Most Powerful | 12AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking for Big Ben over the next couple of weeks.
Honestly, it’s a tough start. For the first week and a half, we’re looking at a real flat spell. From Friday the 24th of July right through to Monday the 3rd of August, the swells are tiny and the conditions are just not cooperating. You’ll see a few small bumps, mostly around 1 ft to 2 ft, but the wind is either cross-on or onshore, making it a choppy, messy affair. The combined wave energy barely cracks 100 (106) on the best of those days, and most days it’s well under that. It’s just not worth paddling out for. There’s a brief moment on Monday the 27th of July morning where it cleans up a bit with a light cross-offshore breeze, but the swell is still a puny 1 ft from the SE with a period of 14 seconds, giving a combined energy of only 151. It’s surfable, but only just. You’d be better off waiting.
The real story, and the only standout worth your time, happens much later. We’ve got a massive pulse of energy arriving around Tuesday the 4th of August. Now, this is where it gets interesting, but also a bit dangerous. The swell starts to build on Tuesday, with 5 ft to 6 ft from the SE, but the wind is still cross-on, so it’s not clean. The real deal is on Wednesday the 5th of August. Wednesday morning at Big Ben looks proper, with a 10 ft swell from the SE at a long 16-second period. The wind is light from the SE, which is onshore, but the forecast says the wind and tide are favorable. The combined wave energy is a whopping 4014, so you’ll feel the power. However, this is a big swell for a beach/jetty set-up, and at 10 ft it’s definitely getting into expert-only territory. It’s going to be a heavy, powerful, and potentially dangerous wave. If you’re a beginner, stay well clear.
After that, it just gets bigger. By Thursday the 6th of August, we’re talking 16 ft to 18 ft from the SE, with periods over 18 seconds. The wind turns offshore from the NE, which would make it clean, but the swell is absolutely enormous (14541 energy). This is for the most experienced big-wave chargers only, and even then you’ll want to be very careful. This trend continues right through to Saturday the 8th of August, with 25 ft swells and fresh offshore winds (42756 energy). It’s a monster stretch, but it’s not for the faint of heart.
So, what’s the best call? Honestly, the only option that’s even worth a mention is Wednesday the 5th of August. It’s the first day the swell is big enough to really get your heart pumping, and the light wind makes it look clean. But it’s a serious, heavy wave. For the rest of the period, you’re either staring at flat, choppy junk or getting pounded by a full-blown ocean swell. The crowds at Big Ben are listed as “sometimes” busier, but on a day like that, you’ll be sharing it with the die-hards only.
Stay safe out there.
Rusty.
Short Range ForecastHeavy rain (total 26mm), heaviest during Sat night. Warm (max 29°C on Sun afternoon, min 24°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 39mm), heaviest during Mon night. Warm (max 28°C on Mon morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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 | SE 11 | SE 16 | SE 16 | SE 16 | SE 15 | SE 11 | SE 14 | SE 11 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
Wave Graph | |||||||||||||||||||
61 | 59 | 59 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 65 | 68 | 67 | 65 | 47 | 35 | 45 | 44 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | on | cross-on | on | cross-off | on | cross-on | glassy | cross-off | on | cross | cross | cross | cross-off | cross | cross-on | glassy |
High Tide | 10:06PM1.36m | 3:23PM1.15m | 11:05PM1.35m | 4:08PM1.27m | 00:24AM1.35m | 4:36PM1.36m | 1:40AM1.39m | 5:02PM1.43m | 2:41AM1.44m | 5:26PM1.48m | 3:33AM1.49m | 5:50PM1.50m | |||||||
Low Tide | 6:26AM0.47m | 4:56PM1.15m | 7:40AM0.36m | 7:43PM1.20m | 8:39AM0.25m | 9:04PM1.17m | 9:26AM0.15m | 9:52PM1.11m | 10:08AM0.09m | 10:29PM1.03m | 10:45AM0.06m | 11:02PM0.94m | |||||||
— | 4:41 | — | — | 4:41 | — | — | 4:43 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | |
6:50 | — | 6:49 | — | — | 6:47 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | |
mm | 1 | — | — | — | 3 | 4 | 15 | 1 | 2 | 7 | 4 | 2 | 20 | 4 | — | 1 | — | 1 | — |
Temp °C | 27 | 28 | 28 | 26 | 28 | 28 | 25 | 28 | 29 | 27 | 28 | 28 | 25 | 26 | 26 | 23 | 26 | 25 | 24 |
Feels °C | 31 | 31 | 31 | 30 | 33 | 33 | 29 | 31 | 32 | 32 | 32 | 33 | 30 | 28 | 28 | 25 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 8 | SE 10 | SE 10 | E 6 | ESE 6 | ESE 6 | SE 10 | SE 10 | SSW 6 | ESE 10 | SSW 6 | SSW 8 | SE 10 | SSW 6 | SE 10 |
61 | 59 | 59 | 39 | 37 | 49 | 54 | 41 | 34 | 33 | 65 | 65 | 25 | 67 | 31 | 38 | 35 | 24 | 44 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 11 | SE 10 | SE 10 | E 8 | E 8 | SE 11 | SE 11 | SE 11 | SE 5 | ESE 5 | ESE 10 | SSW 6 | ESE 10 | SE 10 | SSW 6 | SE 10 | SE 4 |
24 | 23 | 57 | 53 | 48 | 35 | 34 | 73 | 56 | 71 | 13 | 11 | 68 | 18 | 65 | 47 | 15 | 45 | 5 | |
Swell 3 Height (m) Direction Period (s) | SSW 5 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | E 9 | SE 13 | SSW 8 | ENE 4 | ENE 8 | E 9 | ENE 7 | SW 8 |
9 | 49 | 43 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 25 | 44 | 20 | 3 | 23 | 27 | 10 | 17 | |
Wind waves Height (m) Direction Period (s) | NE 3 | ENE 4 | E 4 | ESE 4 | ESE 4 | SE 4 | SE 4 | — | — | — | SW 3 | SSW 3 | — | NE 3 | — | ENE 4 | E 3 | SE 4 | — |
1 | 5 | 7 | 14 | 12 | 14 | 9 | — | — | — | 3 | 6 | — | 1 | — | 3 | 1 | 3 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 22 | 30 | 30 | 22 | 35 | 0 | 30 | 30 | 0 | 0 | 24 | 6 | 35 | 35 | 0 | 6 | 22 | 0 |
Best forecast wave conditions in Chiba | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










