
Surf Forecasts:
Big Ben surf forecast from 5 Jul 2026:
- Best quality surf: Saturday 11 Jul, 6AM (local time) - 10ft (3.0m), 17s period, SSW swell with cross-onshore winds.
- Most powerful swell: Saturday 11 Jul, 6AM (local time) - 10ft (3.0m), 17s period, SSW swell with 4,391 kJ wave energy.
- Next surfable swell (1★+): Friday 10 Jul, 12AM (local time) - 8ft (2.5m), 15s 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 Friday (Jul 10) at 12AM. The primary swell is predicted to be 2.5m and 15s 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 3.0m 17s and forecast to arrive on Saturday (Jul 11) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 6s period and expected on Tuesday (Jul 07) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 10th Jul) | 8ft (2.5m) 15s |
| Best Surf | 6AM (Sat 11th Jul) | 10ft (3.0m) 17s |
| Most Powerful | 6AM (Sat 11th Jul) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here. Let's take a look at what's headed our way out at Big Ben over the next couple of weeks.
The first few days are a total loss. Onshore winds and poor surf through Sunday and Monday—save your energy. The water's sitting at 73°, which is about 2° colder than the usual for this time of year.
Things finally get moving Tuesday the 7th. A long-period groundswell builds from the southeast, and by Tuesday afternoon the combined energy is strong at 2598. The swell's pushing 8ft at 14 seconds, which is serious size for a beach/jetty setup, and with cross-shore winds, it's going to be a handful. Expert-only gear. The peak comes Wednesday the 8th with 7ft at 16 seconds out of the SSE, energy readings over 3500. Proper, raw power. But the wind stays cross-onshore, keeping it lumpy. Wednesday morning with a gentle cross-shore breeze is about the best chance.
Thursday the 9th holds 7ft to 7ft from the south, 14-second periods, with light cross-onshore breezes. It's still marginal but there could be a few bombs if you read the tide right. Friday the 10th keeps the swell at 8ft from the south with very long 16-second periods, but the wind turns onshore again. A lot of water moving, but quality is suspect. Saturday the 11th is similar—8ft SSW swell at 16-17 seconds, energy over 4000—but always cross-onshore and bumpy. You're earning every wave.
Sunday the 12th sees the drop start, and by Monday the 13th we're back to poor conditions. Then we have a long, flat stretch—nothing worth paddling out for almost a week.
Then out of nowhere, a small window opens Saturday the 18th. The morning is glassy—dead calm, with a clean 3ft easterly swell at 10 seconds. The combined energy is weak at 280, but it's surfable and clean. For a beginner, this is actually the best wave of the whole run: small, clean, and manageable. But it's inconsistent, so don't expect a crowded peak. That window is gone by afternoon as the wind shifts back.
Sunday the 19th and Monday the 20th are small, short-period and marginal again, mostly under 3ft with light cross-onshore breezes.
The standout for size is definitely Wednesday the 8th, but it's expert-only. The sleeper pick is Saturday morning the 18th—absolutely glassy, tiny, clean waves, perfect for a beginner. The second week is mostly flat and average, so don't bank on much.
Rusty, signing off.
Short Range ForecastHeavy rain (total 24mm), heaviest during Mon night. Warm (max 24°C on Sun morning, min 20°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Fri morning, min 21°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | |||||||||||||||
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) | SE 5 | SE 6 | SE 7 | SE 7 | ESE 7 | ESE 7 | SE 15 | ESE 14 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | S 14 | S 14 | S 15 | S 16 | S 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph | |||||||||||||||||||||
60 | 139 | 221 | 204 | 229 | 255 | 905 | 2089 | 1184 | 2599 | 2338 | 2905 | 1832 | 1617 | 2652 | 3103 | 3182 | 4043 | 4001 | 3522 | 2856 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | glassy | on | 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 | 1:55PM0.38m | 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 | ||||||||
4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:33 | — | — | |
— | 6:57 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:55 | — | — | 6:55 | — | |
mm | 2 | — | — | 4 | 4 | 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 22 | 21 | 21 | 21 | 23 | 24 | 22 | 25 | 24 | 21 | 25 | 25 | 22 | 26 | 26 | 23 | 25 | 25 | 24 |
Feels °C | 24 | 24 | 22 | 22 | 20 | 22 | 22 | 23 | 23 | 25 | 24 | 21 | 26 | 26 | 24 | 28 | 28 | 25 | 27 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | E 8 | ENE 8 | SE 7 | SE 14 | SE 12 | SE 12 | SE 15 | ESE 14 | E 8 | SSE 16 | SSE 16 | SSE 16 | S 14 | S 14 | S 15 | S 16 | S 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 |
29 | 19 | 221 | 179 | 151 | 192 | 905 | 2089 | 507 | 2599 | 2338 | 2905 | 1832 | 1617 | 2652 | 3103 | 3182 | 4043 | 4001 | 3522 | 2856 | |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | SE 14 | SE 17 | SSE 16 | SSE 15 | WSW 6 | SSE 19 | SSE 16 | E 8 | E 8 | E 8 | S 17 | S 16 | E 8 | ESE 8 | ESE 10 | ESE 9 | E 9 | E 9 | E 9 |
20 | 20 | 54 | 76 | 169 | 201 | 4 | 207 | 1184 | 472 | 358 | 217 | 1077 | 1193 | 134 | 107 | 128 | 118 | 60 | 60 | 41 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | NE 9 | ESE 11 | ENE 8 | WSW 7 | SW 6 | — | — | SSE 18 | S 21 | S 19 | S 19 | E 8 | E 7 | — | — | E 10 | — | — | SE 15 | SSE 9 |
9 | 3 | 37 | 12 | 4 | 2 | — | — | 844 | 436 | 873 | 579 | 142 | 108 | — | — | 120 | — | — | 8 | 35 | |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 6 | — | SE 7 | ESE 7 | ESE 7 | E 7 | E 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
60 | 139 | — | 204 | 229 | 255 | 243 | 302 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 534 | 81 | 29 | 48 | 81 | 29 | 29 | 29 | 22 | 29 | 29 | 29 | 29 | 29 | 0 | 29 | 81 | 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.










