Surf Forecasts:
Big Wave Bay surf forecast from 8 Sep 2026:
- Best quality surf: Saturday 12 Sep, 5AM (local time) - 7.5ft (2.3m), 8s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 8AM (local time) - 8ft (2.4m), 8s period, E swell with 829 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 2AM (local time) - 5.5ft (1.7m), 7s period with E swell.
Best Forecast Surf Conditions for Big Wave Bay this week:
The surf forecast for Big Wave Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 2AM. The primary swell is predicted to be 1.7m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Big Wave Bay in the next 16 days are 2.4m 8s and forecast to arrive on Sunday (Sep 13) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 13s period and expected on Tuesday (Sep 15) at 2PM.
| Wave Type | Time (HKT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 11th Sep) | 5.5ft (1.7m) 7s |
| Best Surf | 5AM (Sat 12th Sep) | 7.5ft (2.3m) 8s |
| Most Powerful | 8AM (Sun 13th Sep) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Big Wave Bay over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's talk about Big Wave Bay in terms you might be more used to. Water's about 83°, totally normal for now.
We kick off on Tuesday, September 8th with basically flat surf – a tiny 0.3ft east swell, almost no energy (4). Glassy morning, but nothing to ride. That flatness hangs around through Wednesday and into Thursday, when we finally see a little bump to 5ft east swell on Thursday morning with moderate energy (148), but the wind is cross-shore and onshore, so it's choppy and no good.
The whole first week is pretty lackluster. Saturday, September 12th offers the best early glimpse: 4ft east swell, clean cross-offshore wind in the morning, wave energy up to 257. It's the cleanest we get, but still not firing. After that, the onshore wind returns and it's back to chop.
From Sunday the 13th through to Wednesday the 16th, the swell builds to around 7ft with strong energy (over 400), but with fresh onshore winds at 18-25 mph, it's lumpy and ugly. This setup might be better for kitesurfing than paddle surfing.
The second week is more of the same. Thursday the 17th drops to 5ft with weak energy (125), wind still onshore. Friday the 18th sees 7ft from the east-southeast with moderate energy (299), but cross-onshore winds ruin it.
The only real change comes Monday the 21st afternoon into Tuesday the 22nd, when we get a clean onshore wind from the southeast and a long-period groundswell (16-20 seconds) arrives at just 2-1.0ft. Energy hits moderate (385 on Monday), and that period means good shape, but the size is tiny and the direction doesn't suit this break's optimum.
So, bottom line: there's no standout session in this 16-day window. Consistent onshore winds and poor conditions dominate. It's a dry spell, plain and simple. Forecasts might shift, but right now, I'd save the energy for another day.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Thu night. Warm (max 30°C on Tue afternoon, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Sun night. Warm (max 30°C on Fri afternoon, min 25°C on Fri morning). Winds increasing (light winds from the ENE on Fri night, strong winds from the ENE by Sun night). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 11 | E 11 | E 4 | E 5 | E 6 | E 7 | E 7 | E 8 | E 8 | E 8 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 2 | 2 | 9 | 68 | 148 | 152 | 286 | 203 | 173 | 427 | 257 | 194 | 572 | 317 | 277 | 600 | 276 | 306 | 353 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:04PM0.94m | 6:55AM1.74m | 9:23PM0.98m | 7:53AM1.73m | 9:42PM1.05m | 8:41AM1.66m | 9:58PM1.14m | 9:24AM1.54m | 10:05PM1.25m | 10:03AM1.38m | 10:03PM1.37m | 10:35AM1.20m | 10:07PM1.48m | ||||||||
Low Tide | 1:24PM0.13m | 11:46PM0.80m | 2:05PM0.13m | 00:53AM0.69m | 2:38PM0.17m | 1:52AM0.57m | 3:08PM0.24m | 2:47AM0.47m | 3:35PM0.33m | 3:38AM0.38m | 4:00PM0.43m | 4:27AM0.33m | 4:24PM0.53m | ||||||||
 |  |  | | |  |  | |  | | |  | | | | | | |  | | | |
 | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — |
 | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — |
mm | — | — | — | — | — | 3 | 1 | 1 | 3 | — | — | — | — | — | 2 | — | 1 | 8 | 2 | 3 | 3 |
Temp °C | 29 | 30 | 29 | 29 | 29 | 28 | 28 | 29 | 27 | 28 | 30 | 28 | 28 | 30 | 29 | 28 | 29 | 28 | 27 | 28 | 28 |
Feels °C | 33 | 33 | 33 | 30 | 29 | 28 | 27 | 29 | 27 | 28 | 30 | 29 | 27 | 29 | 29 | 26 | 29 | 26 | 25 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 7 | S 7 | S 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 8 | E 8 | E 8 | E 8 | E 9 | E 9 | S 10 | E 8 | SSE 11 | SSE 9 | SSE 11 | SSE 12 | S 13 |
| kJ | 42 | 28 | 27 | 28 | 18 | 17 | 18 | 10 | 14 | 203 | 173 | 309 | 257 | 194 | 8 | 317 | 69 | 119 | 494 | 1155 | 1170 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 11 | E 11 | E 10 | — | SSW 7 | — | SSW 8 | S 8 | S 7 | S 9 | S 9 | SSE 8 | SSE 7 | SSE 8 | — | E 14 | E 14 | E 14 |
| kJ | 2 | 2 | 2 | 2 | 2 | 2 | — | 11 | — | 6 | 5 | 1 | 7 | 2 | 6 | 10 | 25 | — | 4 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | E 11 | E 11 | E 9 | — | — | — | — | — | — | — | — | S 8 | — | E 15 | E 15 | — | — | — | — |
| kJ | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | 1 | — | 4 | 4 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 4 | E 5 | E 6 | E 7 | E 7 | — | — | E 8 | NNE 3 | — | E 8 | NNE 3 | E 8 | E 8 | E 7 | E 7 | E 7 |
| kJ | — | — | — | — | 9 | 68 | 148 | 152 | 286 | — | — | 427 | 6 | — | 572 | 4 | 277 | 600 | 276 | 306 | 353 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 670 | 671 | 750 | 804 | 804 | 845 | 40 | 804 | 0 | 5 | 161 | 0 | 22 | 889 | 161 | 845 | 1043 | 803 | 670 | 670 | 161 |
Best forecast wave conditions in Hong Kong | |||||||||||||||||||||
Best forecast wave conditions in China | |||||||||||||||||||||
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Information about the Big Wave Bay Surf forecast
The above surf forecast table for Big Wave Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big Wave Bay can be found by selecting the local surf guide option on the grey menu. Our Big Wave Bay 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 Wave Bay) 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 Wave Bay 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.
Are you planning a holiday in Hong Kong? If you are looking for accommodation near Big Wave Bay, camping, hotels and holiday cottages in Hong Kong, consider staying in Hong Kong which is 9 km (6 miles) away. Other places in and around Hong Kong where you can find information about places to rent, and car hire include Aberdeen which is 10 km (6 miles) away, Kowloon, Shenzhen and Yantian.
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