Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 48 hour detailed Surf Forecast

Issued: 9 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
17.5° C
0.8° 

Backdoor 4 surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Backdoor 4 today (19 Aug):

  • Morning surf: Morning surf (19 Aug, local time) - 3.5ft (1.1m), 7s period with E swell.
  • Afternoon surf: Afternoon surf (19 Aug, local time) - 3.5ft (1.1m), 10s period with ESE swell.
  • Evening surf: Evening surf (19 Aug, local time) - 3ft (0.9m), 9s period with SE swell.

The current surf forecast for Backdoor 4 at 2PM is: 0.9m 7s primary swell from a East-southeast direction and 0.6m 10s secondary swell from a East-southeast direction (forecast issued at 09:00am August 19). The wind direction is predicted to be cross-onshore.

Time (AEST) & DateWave HeightWave Period
Morning (19 Aug)3.5ft (1.1m)7s
Afternoon (19 Aug)3.5ft (1.1m)10s
Evening (19 Aug)3ft (0.9m)9s

Table - waves today at Backdoor 4. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 6mm), mostly falling on Fri night. Warm (max 21°C on Thu morning, min 13°C on Wed night). Mainly fresh winds.

Wednesday
19
Thursday
20
Friday
21
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
2
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
E
7
0.7
ESE
10
0.9
ESE
7
1.1
ESE
10
0.9
SE
9
0.8
SE
9
0.8
SE
9
0.7
SE
9
0.7
SE
8
0.9
E
6
0.9
E
6
1
ENE
6
1.3
ENE
6
1.5
NE
6
1.2
ENE
7
1
ENE
6
0.8
ENE
6
0.7
ENE
6
0.7
ENE
6
0.5
ENE
6
0.4
ENE
6
0.4
ENE
6
Wave Graph
Metric surfscale
Energy kJ
127
94
79
210
125
97
95
77
67
64
63
75
123
181
117
80
51
35
34
21
15
14
Wind (km/h)
5
N
5
N
15
ENE
25
NE
30
NE
20
NNE
20
N
10
NNW
10
NNW
15
N
20
NE
25
NE
20
NNE
10
WNW
10
NW
10
NW
10
NW
10
NNW
10
WNW
15
W
20
WSW
20
WNW
Wind State
glassy
on
cross-on
cross-on
cross-on
on
on
on
on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
cross
cross-off
cross-off
cross
High Tide
12:52PM1.32m
1:05AM0.96m
1:49PM1.28m
2:17AM0.88m
2:54PM1.27m
Low Tide
6:11AM0.39m
7:30PM0.50m
6:53AM0.47m
8:46PM0.53m
7:49AM0.53m
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
part cloud
cloud
part cloud
clear
cloud
part cloud
part cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:26
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:27
5:27
5:28
 mm
Temp °C
15
15
16
16
16
15
14
13
14
16
21
20
20
19
18
17
16
19
21
21
16
15
Feels °C
15
14
13
12
11
11
11
11
12
13
17
15
16
17
15
15
14
17
18
18
12
12
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Backdoor 4 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.


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