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Surf Forecasts:
Big Ben surfForecast / Chiba / Japan
16 Day Weather and Surf, issued 8 pm Sunday 17 May 2026 JSTForecast update in hr min s Forecast update imminent
Big Ben surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Ben sea temperature is
19.9° C
(Which is slightly cooler than normal)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 Monday (May 18) at 12AM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 0.3m and 9s. 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 2.2m 8s and forecast to arrive on Saturday (May 23) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 10s period and expected on Sunday (May 24) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 18th May) | 4.5ft (1.3m) 9s |
| Best Surf | 12AM (Mon 18th May) | 4.5ft (1.3m) 9s |
| Most Powerful | 12AM (Sat 23rd May) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Big Ben over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Wed morning. Warm (max 22°C on Mon morning, min 18°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 32mm), heaviest during Thu night. Warm (max 21°C on Sat morning, min 15°C on Fri morning). Winds increasing (light winds from the NE on Wed night, fresh winds from the NE by Thu night). | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
ESE 9 | ESE 9 | E 9 | ESE 8 | E 10 | SE 11 | SE 11 | SE 10 | ESE 10 | ESE 10 | ESE 10 | ENE 6 | ENE 7 | ENE 7 | E 8 | E 8 | E 8 | ESE 8 | ESE 9 | E 9 | E 9 | |
232 | 193 | 158 | 118 | 120 | 90 | 110 | 102 | 164 | 157 | 117 | 191 | 363 | 542 | 549 | 612 | 535 | 497 | 547 | 455 | 395 | |
Wind (km/h) | |||||||||||||||||||||
glassy | on | cross-on | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | on | |
High Tide | 4:11AM1.46m | 6:33PM1.36m | 4:40AM1.45m | 7:18PM1.32m | 5:11AM1.42m | 8:07PM1.28m | 5:45AM1.35m | 9:00PM1.24m | 6:26AM1.26m | 10:00PM1.21m | 7:22AM1.15m | 10:58PM1.20m | 9:01AM1.04m | ||||||||
Low Tide | 10:53PM0.87m | 11:23AM-0.08m | 11:26PM0.93m | 12:00PM-0.06m | 00:01AM0.97m | 12:40PM0.00m | 00:42AM1.00m | 1:22PM0.10m | 1:35AM1.02m | 2:11PM0.23m | 2:56AM1.00m | 3:09PM0.36m | 4:46AM0.93m | 4:18PM0.49m | |||||||
 |  | | |  | |  |  |  |  | | |  | |  | | | |  | | | |
 | — | 4:33 | — | — | 4:33 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — | 4:30 | — |
 | 6:37 | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:39 | — | — | 6:40 | — | — | 6:40 | — | — | 6:42 |
— | — | — | — | — | — | — | 4 | 7 | 4 | 3 | 10 | 13 | 2 | — | — | — | — | — | — | 1 | |
Temp °C | 18 | 22 | 22 | 19 | 22 | 22 | 20 | 20 | 18 | 17 | 17 | 16 | 16 | 16 | 17 | 17 | 21 | 20 | 19 | 21 | 21 |
17 | 21 | 21 | 19 | 20 | 20 | 20 | 20 | 18 | 17 | 15 | 12 | 10 | 11 | 13 | 13 | 17 | 17 | 18 | 20 | 21 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | E 9 | ESE 8 | E 10 | E 9 | SE 11 | SE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | S 7 | — | — | SSW 7 | NE 10 | NE 10 | ESE 9 | E 9 | E 9 |
 kJ | 232 | 193 | 158 | 118 | 120 | 87 | 110 | 102 | 164 | 157 | 117 | 115 | 14 | — | — | 5 | 4 | 4 | 547 | 455 | 395 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SSE 8 | SE 7 | SE 10 | SE 8 | SE 11 | E 10 | E 10 | SSW 4 | SW 8 | S 6 | S 6 | SW 7 | — | — | NE 10 | W 7 | — | NE 11 | NE 10 | NE 9 |
| kJ | 16 | 6 | 14 | 35 | 48 | 90 | 71 | 70 | 6 | 3 | 6 | 20 | 11 | — | — | 4 | 1 | — | 4 | 4 | 14 |
Swell 3 Height (m) Direction Period (s) | NE 9 | NE 10 | SE 10 | SE 7 | ENE 9 | NE 9 | NE 10 | NE 9 | NE 8 | — | SW 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | 12 | 4 | 16 | 13 | 8 | 3 | 14 | 12 | 11 | — | 3 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | S 3 | S 3 | S 3 | SSW 4 | SW 4 | SW 4 | NE 4 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | E 8 | E 8 | E 8 | ESE 8 | — | — | — |
| kJ | — | — | — | 1 | 5 | 5 | 31 | 20 | 8 | 17 | 69 | 191 | 363 | 542 | 549 | 612 | 535 | 497 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 112 | 0 | 30 | 30 | 120 | 112 | 35 | 90 | 0 | 0 | 6 | 534 | 90 | 229 | 273 | 273 | 595 | 942 | 923 | 29 | 35 |
Best forecast wave conditions in Chiba | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big Ben surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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