Surf Forecasts:
Big Wave Bay surf forecast from 18 Jul 2026:
- Most powerful swell: Monday 20 Jul, 5AM (local time) - 1.5ft (0.4m), 5s period, SE swell with 6 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 5s and forecast to arrive on Monday (Jul 20) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Sunday (Jul 19) at 8AM.
| Wave Type | Time (HKT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Mon 20th Jul) | 1.5ft (0.4m) 5s |
Table - best surf conditions forecast for Big Wave Bay over the next 16 days.
The Lowdown
Hey, Rusty again. Same story in feet and miles per hour: Big Wave Bay is dead flat for the next 16 days. No surf worth mentioning from Saturday 18th July through Sunday 2nd August. Swell heights barely reach 0.3 ft most days, with the biggest pulse being 4 ft on August 1st—still a short-period, messy cross-shore affair. Wave energy never gets above 74 (weak), and every report calls it “poor surf conditions.”
This spot is usually pretty consistent and sheltered, so this dry spell stings. Water temp sits around 84°F—normal for this time of year. The only faint glimmer is that 4 ft bump on August 1st, but with a 6-second period and cross-shore winds, it’ll be a sloppy mess. Not worth your time. Weather changes, but for now, leave the boards at home.
Rusty
Short Range ForecastHeavy rain (total 24mm), heaviest during Sat night. Warm (max 30°C on Sat afternoon, min 28°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Wed morning. Warm (max 29°C on Tue morning, min 28°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 8 | E 8 | E 8 | E 9 | E 9 | E 9 | SE 5 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 11 | E 11 | E 11 | E 10 | E 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 1 | 2 | 2 | 1 | 6 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy |
High Tide | 10:44AM1.71m | 1:45AM1.00m | 11:17AM1.49m | 2:12AM1.10m | 11:44AM1.25m | 2:32AM1.20m | 12:08PM1.04m | 2:28AM1.30m | 12:36PM0.85m | 4:19PM0.78m | 2:30AM1.39m | 1:11PM0.69m | 6:45PM0.74m | 3:05AM1.47m | 2:03PM0.57m | 8:22PM0.77m | |||||
Low Tide | 6:18PM0.19m | 5:38AM0.70m | 6:48PM0.32m | 6:44AM0.71m | 7:16PM0.44m | 7:54AM0.70m | 7:42PM0.55m | 9:07AM0.66m | 4:01PM0.78m | 8:09PM0.64m | 10:23AM0.60m | 3:31PM0.65m | 8:36PM0.71m | 11:37AM0.52m | 3:39PM0.55m | 9:06PM0.77m | |||||
 | |  |  | | | | | | | |  | | | | |  |  | | | | |
 | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — |
 | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | 8 | 3 | 2 | 4 | 4 | — | 3 | 4 | 1 | 2 | 5 | — | 2 | 2 | — | — | — | — | — |
Temp °C | 29 | 30 | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 33 | 33 | 33 | 32 | 32 | 31 | 32 | 32 | 33 | 31 | 30 | 32 | 31 | 31 | 31 | 33 | 31 | 33 | 33 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | S 7 | E 8 | E 8 | E 9 | E 9 | E 9 | SE 5 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | S 7 | S 7 | E 9 | S 7 | S 7 | S 6 | S 7 |
| kJ | 91 | 1 | 1 | 2 | 2 | 1 | 6 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 57 | 44 | 2 | 36 | 32 | 22 | 24 |
Swell 2 Height (m) Direction Period (s) | E 8 | — | — | E 7 | — | — | E 8 | — | — | E 9 | E 9 | E 9 | — | — | E 8 | E 8 | E 9 | E 11 | E 11 | E 10 | E 10 |
| kJ | 1 | — | — | 1 | — | — | 1 | — | — | 2 | 2 | 1 | — | — | 1 | 1 | 2 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 11 | E 11 | — | — | E 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | 2 |
Wind waves Height (m) Direction Period (s) | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | S 7 | — | S 7 | — | — | — | — |
| kJ | 138 | 111 | 111 | 111 | 110 | 92 | 70 | 104 | 97 | 88 | 89 | 74 | 63 | 61 | 94 | — | 47 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1433 | 1433 | 832 | 670 | 656 | 683 | 1496 | 683 | 683 | 683 | 683 | 670 | 670 | 683 | 656 | 670 | 670 | 670 | 670 | 670 | 750 |
Best forecast wave conditions in Hong Kong | |||||||||||||||||||||
Best forecast wave conditions in China | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big Wave Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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