
Surf Forecasts:
Big Wave Bay surf forecast from 12 Sep 2026:
- Most powerful swell: Sunday 13 Sep, 2AM (local time) - 8ft (2.4m), 8s period, E swell with 687 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 2.4m 8s and forecast to arrive on Sunday (Sep 13) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Sunday (Sep 13) at 11PM.
| Wave Type | Time (HKT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 13th Sep) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Big Wave Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Big Wave Bay has in store for us. I’ll be straight with you – this outlook is a tough one. We’ve got a full 16 days on the calendar, but if you’re looking for a decent wave, you’re going to be waiting a long time. The whole period is a write-off.
The first record we see is for Saturday the 12th, and it’s not good. We’ve got a 4ft swell rolling in from the east, but it’s a weak, short-period windswell at only 8 seconds. The combined swell energy is a so-so 217 (moderate), but that’s where the good news ends. The wind is a messy 16 mph cross-onshore out of the east, making for choppy, poor conditions. It’s the same story day after day.
For the next two weeks, it’s the same curse. The swell sticks between 1ft and 6ft, mostly from the east, with periods that are short – between 4 and 8 seconds. The wind almost never lets up. It’s a constant barrage of cross-onshore and onshore breezes, with speeds often hitting 16 to 19 mph. This is not surf; it’s a washing machine. The water temp is sitting at 84°F with a tiny 0.7°F anomaly, so that’s about what you’d expect for the time of year, but you won’t be enjoying it much.
There is one moment of calm. On the morning of Tuesday the 22nd of September, the wind goes glassy. But that’s the only good thing. The swell is a pathetic 2ft from the east with a 6-second period, so the wave energy is almost nothing (30). You’d be bobbing around on lake-like conditions, not surfing.
After that, end of the month sees a tiny bump of 4ft to 4ft with some offshore wind on the 23rd, but the period is still short (5-6 seconds) and the energy is weak. The wind turns back onshore and cross-onshore immediately after.
Honestly, there’s not a single moment in the whole 16-day window that I’d recommend paddling out. The swell is too small and weak, and the wind is consistently ruining what little there is. If you’re into kite surfing, this constant onshore wind and small, bumpy waves might look alright. For paddle surfing, it’s a total blank. Stick to a longboard session at a protected spot if you can find one, but at Big Wave Bay, you’re out of luck.
Stay patient, folks. It won’t stay poor forever.
Rusty.
Short Range ForecastHeavy rain (total 24mm), heaviest during Sat night. Warm (max 29°C on Sat afternoon, min 27°C on Sat afternoon). Winds decreasing (strong winds from the E on Sat night, calm by Mon night). | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 8 | E 8 | E 7 | E 6 | E 6 | E 5 | E 6 | E 5 | E 6 | E 6 | E 6 | E 6 | E 7 | E 6 | E 6 | E 8 | E 6 | E 6 | E 6 | ESE 6 |
Wave Graph | ||||||||||||||||||||
217 | 687 | 262 | 141 | 64 | 47 | 62 | 41 | 109 | 92 | 200 | 176 | 184 | 187 | 153 | 191 | 206 | 105 | 94 | 82 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:05PM1.25m | 10:03AM1.38m | 10:03PM1.37m | 10:35AM1.20m | 10:07PM1.48m | 10:55AM1.02m | 10:23PM1.57m | 11:05AM0.88m | 10:49PM1.61m | 11:20AM0.76m | 11:21PM1.62m | 11:43AM0.67m | 00:00AM1.59m | |||||||
Low Tide | 3:35PM0.33m | 3:38AM0.38m | 4:00PM0.43m | 4:27AM0.33m | 4:24PM0.53m | 5:16AM0.32m | 4:46PM0.62m | 6:06AM0.34m | 5:03PM0.70m | 6:59AM0.38m | 7:59AM0.43m | |||||||||
— | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | |
mm | 1 | 9 | 4 | 2 | 2 | 1 | — | 4 | 1 | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 |
Feels °C | 29 | 25 | 27 | 28 | 29 | 29 | 30 | 30 | 28 | 28 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 27 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | S 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | SSW 6 | SW 6 | S 6 | S 5 | — | S 6 | S 6 | E 10 |
1 | 1 | 6 | 20 | 52 | 35 | 23 | 24 | 15 | 9 | 9 | 4 | 4 | 1 | 1 | 1 | — | 1 | 1 | 2 | |
Swell 2 Height (m) Direction Period (s) | — | E 15 | S 7 | SSE 6 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | — | — | — | — | — | — | S 6 | S 6 | — |
— | 4 | 1 | 14 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | — | — | — | — | — | — | 1 | 1 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | E 15 | E 14 | E 10 | E 10 | — | — | — | E 13 | — | — | — | — | — | — | — | — | — | — |
— | — | 4 | 4 | 2 | 2 | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 7 | E 6 | E 6 | E 5 | E 6 | E 5 | E 6 | E 6 | E 6 | E 6 | E 7 | E 6 | E 6 | E 8 | E 6 | E 6 | E 6 | ESE 6 |
217 | 687 | 262 | 141 | 64 | 47 | 62 | 41 | 109 | 92 | 200 | 176 | 184 | 187 | 153 | 191 | 206 | 105 | 94 | 82 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1043 | 161 | 804 | 826 | 803 | 161 | 43 | 6 | 814 | 581 | 656 | 928 | 1043 | 581 | 814 | 928 | 161 | 928 | 1056 | 581 |
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.










