Surf Forecasts:
Big Wave Bay surf forecast from 6 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 8PM (local time) - 2.5ft (0.8m), 5s period, SW swell with 34 kJ wave energy.
Best Forecast Surf Conditions for Big Wave Bay this week:
The most powerful waves expected at Big Wave Bay in the next 16 days are 0.8m 5s and forecast to arrive on Sunday (Aug 09) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 9s period and expected on Thursday (Aug 13) at 2AM.
| Wave Type | Time (HKT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sun 9th Aug) | 2.5ft (0.8m) 5s |
Table - best surf conditions forecast for Big Wave Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what’s cooking at Big Wave Bay over the next couple of weeks.
Honestly, it’s a grim stretch for paddle surfing. We’ve got a solid 12-day gap from now until around Wednesday, August 19th, where there is basically nothing to ride – flat spells, tiny wind swells that barely register, and a whole lot of clean but empty ocean. The water is sitting at 83°F right now, which is about average for the time of year, so no surprises there. But the surf? Zilch.
The first real pulse of energy shows up on Wednesday, August 19th. We get a short-period easterly swell rolling in, around 3ft, but with a period of only 5 seconds – that’s weak, jumbled, and lacks any punch. The wind is cross-shore from the ENE at 16 mph, so it'll be choppy and messy. Wave energy is weak at (47), and with the break being sheltered and the swell direction not aligning with the optimum NE, it's not going to do much. This one's for the kite crew, not the surfers.
Thursday, August 20th, sees a bump in size, but it’s still a poor setup. Swell hits 4ft from the east, period a lousy 5-6 seconds, and combined energy moves into moderate territory (135 on Thursday afternoon). But with strong cross-onshore winds at 22-25 mph, it’s going to be a lumpy, blown-out mess. This is definitely too big for beginners and even for most intermediates – more of an expert or kite-surfing kind of day.
By Friday, August 21st, and into Saturday, August 22nd, the swell fades back down to 3ft and then 2ft, with period lengthening a touch to 10 seconds, but the winds stay onshore or cross-onshore. The water stays clean-looking in the forecast but the actual wave quality will be poor. There's no standout session in this entire run – nothing that makes you want to rush down. If you're desperate, the cleanest-looking morning is Saturday, August 22nd, with a light cross-onshore and a little 2ft, 10-second swell, but it's barely worth the wax.
Bottom line: Big Wave Bay is a no-go for real surfing for the next two weeks. The swell window just isn’t lining up with the right winds or any decent period.
- Rusty
Short Range ForecastMostly dry. Warm (max 33°C on Sat afternoon, min 28°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 32°C on Mon afternoon, min 29°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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 6 | E 20 | SW 3 | E 10 | E 14 | E 14 | E 15 | SE 15 | E 14 | E 12 | E 11 | SSW 9 | S 10 | E 13 | E 12 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 11 | 8 | 3 | 2 | 4 | 4 | 4 | 8 | 4 | 3 | 2 | 0 | 0 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 2:11PM0.69m | 2:40AM1.68m | 3:52AM1.76m | 9:23PM0.83m | 5:16AM1.83m | 9:47PM0.85m | 6:37AM1.90m | 10:14PM0.86m | 7:42AM1.94m | 10:40PM0.88m | 8:36AM1.92m | 11:05PM0.93m | |||||||||
Low Tide | 10:02AM0.41m | 3:50PM0.68m | 8:03PM0.74m | 11:23AM0.29m | 12:38PM0.16m | 10:09PM0.83m | 1:42PM0.06m | 11:32PM0.81m | 2:34PM-0.00m | 00:42AM0.76m | 3:17PM-0.01m | 1:44AM0.68m | 3:55PM0.04m | 2:43AM0.61m | |||||||
 | |  | |  | | | |  | | | | | |  | | |  |  | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 3 | 2 | — | 2 |
Temp °C | 29 | 30 | 29 | 32 | 33 | 31 | 32 | 33 | 31 | 31 | 32 | 31 | 31 | 31 | 30 | 31 | 31 | 29 | 30 | 30 | 29 |
Feels °C | 33 | 32 | 32 | 35 | 36 | 35 | 33 | 34 | 34 | 31 | 32 | 35 | 32 | 32 | 34 | 34 | 33 | 31 | 33 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | S 7 | S 7 | SSW 7 | SSW 7 | E 14 | SSW 8 | SSW 8 | SE 15 | SSW 9 | SSW 8 | E 11 | SSW 9 | S 10 | S 10 | E 12 | — | — | — | SSW 9 | — | SSW 8 |
| kJ | 24 | 24 | 43 | 57 | 4 | 119 | 109 | 8 | 180 | 151 | 2 | 173 | 220 | 225 | 3 | — | — | — | 294 | — | 207 |
Swell 2 Height (m) Direction Period (s) | SE 6 | ESE 6 | SE 5 | — | — | E 14 | E 15 | — | E 14 | — | — | — | — | E 13 | — | — | — | — | — | — | — |
| kJ | 11 | 4 | 1 | — | — | 4 | 4 | — | 4 | — | — | — | — | 3 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 9 | E 20 | — | E 10 | — | — | — | — | — | E 12 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 8 | — | 2 | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 3 | WNW 3 | SSW 8 | — | NNW 2 | SSW 9 | — | WNW 3 | SSW 9 | — | — | SW 3 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | — |
| kJ | — | — | 3 | 3 | 116 | — | 1 | 212 | — | 2 | 249 | — | — | 3 | 375 | 300 | 344 | 426 | 426 | 329 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 581 | 683 | 272 | 161 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 832 | 6 | 40 | 272 | 40 | 161 | 683 | 40 |
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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