Surf Forecasts:
Big Wave Bay surf forecast from 5 Aug 2026:
- Most powerful swell: Wednesday 5 Aug, 2PM (local time) - 0.5ft (0.2m), 18s period, ESE swell with 31 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 0.2m 18s and forecast to arrive on Wednesday (Aug 05) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 10s period and expected on Wednesday (Aug 12) at 8AM.
| Wave Type | Time (HKT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Wed 5th Aug) | 0.5ft (0.2m) 18s |
Table - best surf conditions forecast for Big Wave Bay over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on offer for Big Wave Bay over the next sixteen days.
To be straight with you, the outlook is grim. The first stretch is a dead loss. We’ve got a solid gap from the start all the way through Wednesday morning, 19 August, with absolutely nothing worth paddling out for. The whole setup is sheltered from the swell, and the wave heights barely nudge above 2 ft, with periods so short there’s no push. The water temp is sitting at 84°, which is bang on average for this time of year. There’s a few moments of clean conditions, like Sunday afternoon, 9 August, when the wind goes glassy, but there’s no swell to ride.
Then, on Wednesday morning, 19 August, we finally see a pulse of energy. The combined swell energy jumps to 145 (moderate) with a 5 ft swell from the ENE, but it’s a short-period 6-second wind swell. The wind is a fresh cross-shore breeze, which makes conditions lumpy and messy. It’s a real shame, because that size is punchy, but the wind is ruining it. The follow-up on Wednesday afternoon stays around 5 ft, with combined energy at 160 (moderate), but the wind cranks up to a strong cross-onshore, and there’s a risk of thunderstorms. It’s a write-off for a clean surf.
The rest of the outlook into Thursday, 20 August, stays messy with cross-onshore winds and choppy surf. Honestly, for a paddle surfer, there’s nothing here. The whole sixteen-day window is a blank. For a sheltered spot like this, a long run of tiny, wind-affected swell is more normal than exciting. If you’ve got a kite, that 5 ft on Wednesday might be fun, but for a surfboard? Don’t waste your time.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Fri afternoon, min 27°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 34°C on Sun afternoon, min 29°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 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) | E 7 | ESE 18 | ESE 17 | SE 8 | SE 8 | SE 7 | SE 6 | SW 3 | E 21 | E 21 | E 14 | E 14 | E 14 | E 15 | SE 15 | SE 15 | SE 15 | E 14 | E 13 | SW 4 | E 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 24 | 31 | 29 | 21 | 28 | 7 | 6 | 2 | 8 | 8 | 4 | 4 | 4 | 4 | 9 | 8 | 8 | 4 | 4 | 11 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 12:08PM1.13m | 00:54AM1.48m | 1:00PM0.91m | 1:42AM1.59m | 2:11PM0.69m | 2:40AM1.68m | 3:52AM1.76m | 9:23PM0.83m | 5:16AM1.83m | 9:47PM0.85m | 6:37AM1.90m | 10:14PM0.86m | |||||||||
Low Tide | 7:12PM0.55m | 8:42AM0.50m | 7:40PM0.65m | 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 | ||||||||
 |  |  | | |  | | | | | | | | |  | | | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 28 | 29 | 28 | 29 | 29 | 28 | 29 | 30 | 29 | 31 | 32 | 30 | 33 | 34 | 31 | 31 | 32 | 30 | 31 | 32 | 30 |
Feels °C | 32 | 32 | 32 | 32 | 31 | 32 | 32 | 32 | 32 | 34 | 35 | 34 | 35 | 39 | 36 | 35 | 34 | 34 | 35 | 34 | 31 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 6 | SE 8 | SE 8 | S 8 | S 7 | S 7 | S 8 | SSW 7 | E 14 | E 14 | S 10 | E 15 | SSW 8 | SSW 8 | S 9 | SSW 9 | S 10 | S 9 | E 12 |
| kJ | 24 | 23 | 20 | 21 | 28 | 41 | 36 | 24 | 42 | 61 | 4 | 4 | 226 | 4 | 185 | 119 | 158 | 222 | 279 | 217 | 3 |
Swell 2 Height (m) Direction Period (s) | SSW 6 | SSW 6 | SSW 6 | ESE 6 | SSW 6 | SE 7 | SE 6 | SE 6 | SE 6 | S 9 | E 14 | E 14 | E 14 | — | SE 15 | SE 15 | SE 15 | E 14 | E 13 | E 13 | — |
| kJ | 8 | 7 | 4 | 7 | 14 | 7 | 6 | 1 | 1 | 42 | 4 | 4 | 4 | — | 9 | 8 | 8 | 4 | 4 | 3 | — |
Swell 3 Height (m) Direction Period (s) | ESE 14 | ESE 18 | ESE 17 | SSW 6 | ESE 6 | E 6 | — | — | E 21 | E 21 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 18 | 31 | 29 | 8 | 6 | 2 | — | — | 8 | 8 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 3 | SW 3 | SW 9 | SSW 9 | SSW 8 | — | SSW 9 | SW 8 | — | SW 3 | SSW 9 | — | SW 4 | SSW 10 |
| kJ | — | — | — | — | — | — | — | 2 | 7 | 281 | 232 | 202 | — | 218 | 349 | — | 3 | 339 | — | 11 | 334 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 670 | 670 | 6 | 670 | 581 | 581 | 928 | 581 | 581 | 144 | 144 | 40 | 6 | 6 | 6 | 6 | 359 | 40 | 6 | 581 | 40 |
Best forecast wave conditions in Hong Kong | |||||||||||||||||||||
Best forecast wave conditions in China | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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