Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 48 hour detailed Surf Forecast

Issued: 9 pm 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
17.9°C
0.5° 

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 (13 Sep):

  • Morning surf: Morning surf (13 Sep, local time) - 3ft (0.9m), 10s period with S swell.
  • Afternoon surf: Afternoon surf (13 Sep, local time) - 3ft (0.9m), 11s period with S swell.
  • Evening surf: Evening surf (13 Sep, local time) - 5ft (1.6m), 6s period with NE swell.

The current surf forecast for Backdoor 4 at 6AM is: 0.9m 10s primary swell from a South direction and 0.7m 5s secondary swell from a Northeast direction, 0.8m 5s secondary swell from a Northeast direction (forecast issued at 09:00pm September 12). The wind direction is predicted to be onshore.

Time (AEST) & DateWave HeightWave Period
Morning (13 Sep)3ft (0.9m)10s
Afternoon (13 Sep)3ft (0.9m)11s
Evening (13 Sep)5ft (1.6m)6s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Mon morning, min 13°C on Sat night). Mainly fresh winds.

Sat
12
Sunday
13
Monday
14
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)
0
0
0
1
1
0
0
0
0
0
0
1
1
0
0
0
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)
1
S
11
1
S
10
1
S
10
0.9
S
10
0.9
S
10
0.9
S
10
0.9
S
11
0.9
S
11
1.6
NE
6
1.6
NE
6
1.6
NE
6
0.8
S
12
0.8
S
12
0.7
S
12
0.7
S
11
1.4
NE
5
1.4
NE
6
1.5
NE
6
Wave Graph
Metric surfscale
Energy kJ
223
206
198
158
158
164
184
184
165
172
178
175
172
132
118
94
122
167
Wind (km/h)
25
NE
20
NNE
15
N
10
NNW
10
NNW
10
NE
25
ENE
35
NE
35
NE
20
NNE
10
NNW
10
NNW
10
NNW
15
NNE
25
ENE
25
NE
25
NNE
15
N
Wind State
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
High Tide
8:54PM1.50m
9:21AM1.49m
9:34PM1.38m
9:57AM1.49m
Low Tide
3:07AM0.11m
3:31PM0.19m
3:39AM0.19m
4:15PM0.24m
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:43
5:44
 mm
Temp °C
17
16
15
14
13
16
18
18
18
17
16
16
16
21
23
20
20
21
Feels °C
14
13
13
13
12
14
13
12
12
13
13
14
14
18
18
15
16
18
  • 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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