Big Wave Bay Surf Break

Lat Long: 22.25° N 114.25° E

Big Wave Bay Surf Forecast and Surf Report

Issued: 7 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Wave Bay sea temperature is
28.8° C
0.1° 

Big Wave Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Big Wave Bay surf forecast from 20 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 8AM (local time) - 1.5ft (0.4m), 18s period, SE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 4ft (1.2m), 6s period, ENE swell with 91 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 25 Aug, 8AM (local time) - 1.5ft (0.4m), 18s period with SE swell.

Best Forecast Surf Conditions for Big Wave Bay this week:

The surf forecast for Big Wave Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 25) at 8AM. The primary swell is predicted to be 0.4m and 18s period with a secondary swell of 0.4m and 3s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Big Wave Bay in the next 16 days are 1.2m 6s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 10s period and expected on Friday (Aug 21) at 5AM.

Wave TypeTime (HKT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Tue 25th Aug)1.5ft (0.4m) 18s
Best Surf 8AM (Tue 25th Aug)1.5ft (0.4m) 18s
Most Powerful 8AM (Wed 26th Aug)4ft (1.2m) 6s

Table - best surf conditions forecast for Big Wave Bay over the next 16 days.


Short Range Forecast

Heavy rain (total 38mm), heaviest during Thu night. Warm (max 29°C on Fri morning, min 28°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 80mm), heaviest during Mon afternoon. Warm (max 30°C on Tue morning, min 26°C on Mon afternoon). Mainly fresh winds.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
NE
6
2
S
10
1.9
S
10
2.3
SSW
9
1.8
S
9
0.1
E
11
0.1
E
11
0.1
E
14
0.1
E
11
0.1
E
10
0.1
E
14
0.1
E
14
0.2
ESE
19
0.4
SE
18
0.4
SE
16
0.4
SE
17
1.1
E
6
1.1
E
6
0.6
E
6
Wave Graph
Metric surfscale
Energy kJ
1
0
0
0
0
2
2
4
2
2
4
4
37
79
67
75
80
77
24
Wind (km/h)
10
SSW
15
SSW
20
S
20
SSW
10
SW
25
WSW
25
WSW
10
WSW
20
WSW
10
W
35
ENE
25
ENE
10
NNE
10
NE
15
ESE
10
NNW
5
NNW
10
ENE
10
NW
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-off
cross
cross-on
off
glassy
cross
off
High Tide
00:55AM1.51m
12:34PM0.63m
1:42AM1.51m
1:15PM0.54m
2:44AM1.50m
4:11AM1.52m
9:28PM0.88m
5:59AM1.57m
9:45PM0.88m
6:57AM1.64m
10:03PM0.89m
Low Tide
9:46AM0.54m
3:01PM0.58m
11:05AM0.50m
3:17PM0.51m
12:20PM0.43m
1:14PM0.36m
10:57PM0.86m
1:54PM0.29m
00:07AM0.80m
2:28PM0.24m
1:04AM0.73m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
part cloud
cloud
thunderstorm
mod rain
thunderstorm
thunderstorm
cloud
cloud
rain showers
cloud
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:01
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:51
6:50
6:49
6:47
6:46
6:45
6:45
 mm
16
8
2
4
4
4
10
9
48
11
1
1
Temp °C
28
29
29
28
29
29
29
29
29
29
27
26
28
30
29
28
30
30
28
Feels °C
32
32
32
30
33
32
31
33
33
34
31
26
32
33
32
32
34
33
32
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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