Surf Forecasts:
Big Wave Bay surf forecast from 24 Aug 2026:
- Most powerful swell: Tuesday 25 Aug, 2PM (local time) - 1.5ft (0.4m), 16s period, SE swell with 69 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 0.4m 16s and forecast to arrive on Tuesday (Aug 25) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Saturday (Aug 29) at 2AM.
| Wave Type | Time (HKT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Tue 25th Aug) | 1.5ft (0.4m) 16s |
Table - best surf conditions forecast for Big Wave Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cookin’ over the next couple of weeks.
Honestly, mate, it’s a rough stretch ahead. We’re lookin’ at a long, flat spell with no real surf on offer for the first week and a half. From Tuesday the 25th of August all the way through to Thursday the 3rd of September, it’s pretty much a write-off – wave heights barely touchin’ 2 ft with weak, short-period junk and onshore slop. The combined swell energy is barely registerin’ (34 down to 2), and you’d be wastin’ your time paddlin’ out. There are a few moments with light offshore breezes, but with no swell to work with, it’s just a flat, clean lake.
Now, there is a little flicker of hope. On Friday the 4th of September, Big Wave Bay (Watch out – This is a sheltered spot, best on a NE swell) wakes up a bit. We’ve got a bump to 8 ft swell from the ENE with a period of 8 seconds, and the combined energy jumps right up into the strong range (1077). But here’s the kicker – the wind is cross and then turning cross-onshore, and the rated score is marginal. The crowd factor is “sometimes” here, so you won’t be alone, but with that size, it’s gettin’ into expert territory. For a sheltered beginner spot, 8 ft is way too much, so this one’s for the crew with a bit of grunt. The swell direction is ENE, which is close to the optimum NE.
The standout – if you can call it that – is that Friday morning session on the 4th. The swell has some weight to it, but it’s not groundswell (period only 8 seconds), so it’ll be a bit walled and choppy as the day wears on. Saturday the 5th of September drops back to 5 ft with cleaner morning light winds, but the swell direction swings ESE, which is not what this bay wants.
In short, the first 11 days are basically a full-on gap with no recommendations. Then you get a couple of days in early September that are alright, but not epic. If you’re a kite surfer, that Friday afternoon on the 4th with 8 ft and a 16 mph cross-onshore might look more interestin’ than a paddle. For the rest of us, it’s a waiting game.
Rusty.
Short Range ForecastHeavy rain (total 31mm), heaviest during Tue night. Warm (max 29°C on Mon night, min 28°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Sun morning. Warm (max 30°C on Fri afternoon, min 27°C on Sat night). Winds increasing (calm on Sat afternoon, fresh winds from the ENE by Sun morning). | ||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||
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 14 | ESE 17 | SE 16 | SE 15 | ESE 12 | ESE 12 | SE 10 | E 9 | E 8 | E 11 | E 11 | E 13 | E 12 | E 10 | E 10 | E 9 | E 3 | S 9 | S 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 8 | 27 | 66 | 57 | 14 | 13 | 4 | 2 | 1 | 2 | 2 | 3 | 3 | 2 | 2 | 2 | 2 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:28PM0.88m | 5:59AM1.57m | 9:45PM0.88m | 6:57AM1.64m | 10:03PM0.89m | 7:37AM1.68m | 10:17PM0.92m | 8:13AM1.69m | 10:19PM0.98m | 8:47AM1.65m | 10:02PM1.08m | 9:22AM1.56m | 10:02PM1.22m | ||||||
Low Tide | 10:57PM0.86m | 1:54PM0.29m | 00:07AM0.80m | 2:28PM0.24m | 1:04AM0.73m | 2:59PM0.21m | 1:56AM0.65m | 3:30PM0.21m | 2:46AM0.57m | 3:59PM0.24m | 3:35AM0.50m | 4:27PM0.31m | 4:26AM0.43m | ||||||
 |  |  |  | | | | |  | | | | | | |  | | | | |
 | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 6:46 | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — |
mm | 3 | 3 | — | 9 | 3 | 2 | 8 | 3 | — | 1 | 2 | — | 4 | 1 | — | — | 5 | 1 | 3 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 29 | 28 | 28 | 29 | 28 |
Feels °C | 31 | 32 | 32 | 33 | 31 | 32 | 32 | 32 | 32 | 34 | 33 | 33 | 34 | 33 | 34 | 32 | 28 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SE 10 | S 8 | S 8 | S 8 | S 9 | E 13 | SSW 8 | S 8 | S 9 | S 9 | S 10 | S 9 | S 8 |
| kJ | 190 | 201 | 219 | 228 | 223 | 258 | 4 | 271 | 273 | 191 | 215 | 3 | 202 | 245 | 235 | 252 | 305 | 235 | 205 |
Swell 2 Height (m) Direction Period (s) | SE 14 | ESE 17 | SE 16 | SE 15 | ESE 12 | ESE 12 | — | E 9 | E 8 | E 11 | E 11 | — | E 12 | E 10 | E 10 | E 9 | E 7 | — | — |
| kJ | 8 | 27 | 66 | 57 | 14 | 13 | — | 2 | 1 | 2 | 2 | — | 3 | 2 | 2 | 2 | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | E 10 | SE 13 | SE 12 | ESE 18 | SE 15 | — | — | — | — | E 8 | — | — | — | — | E 10 | — | — | — | — |
| kJ | 2 | 7 | 6 | 31 | 9 | — | — | — | — | 1 | — | — | — | — | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 8 | — | — | — | — | — | S 8 | — | — | — | WSW 4 | SSW 9 | SSW 8 | — | — | — | E 3 | — | — |
| kJ | 273 | — | — | — | — | — | 291 | — | — | — | 10 | 270 | 374 | — | — | — | 2 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 272 | 740 | 683 | 43 | 775 | 683 | 161 | 272 | 740 | 40 | 6 | 43 | 40 | 6 | 581 | 581 | 581 | 1053 | 819 |
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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