Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 48 hour detailed Surf Forecast

Issued: 9 pm 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
18.3°C
0.1° 

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 (12 Sep):

  • Morning surf: Morning surf (12 Sep, local time) - 4ft (1.2m), 12s period with S swell.
  • Afternoon surf: Afternoon surf (12 Sep, local time) - 3.5ft (1.1m), 11s period with S swell.
  • Evening surf: Evening surf (12 Sep, local time) - 3.5ft (1.0m), 10s period with S swell.

The current surf forecast for Backdoor 4 at 2AM is: 1.4m 10s primary swell from a South-southeast direction and 0.3m 19s secondary swell from a South direction (forecast issued at 09:00pm September 11). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (AEST) & DateWave HeightWave Period
Morning (12 Sep)4ft (1.2m)12s
Afternoon (12 Sep)3.5ft (1.1m)11s
Evening (12 Sep)3.5ft (1.0m)10s

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 12°C on Sat night). Winds increasing (calm on Sat morning, fresh winds from the NE by Sun afternoon).

Fri
11
Saturday
12
Sunday
13
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
2
2
2
3
3
2
0
0
0
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
Wave
Height (m)
Direction
Period (s)
1.5
S
10
1.5
S
10
1.4
SSE
10
1.3
S
10
1.3
S
10
1.2
S
12
1.2
S
12
1.1
S
11
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
Wave Graph
Metric surfscale
Energy kJ
432
432
386
326
332
425
411
307
223
206
198
158
158
164
184
184
165
181
Wind (km/h)
10
ESE
5
ENE
10
WSW
10
WSW
10
WSW
5
ESE
15
E
20
ENE
25
NE
20
NNE
15
N
10
N
10
N
15
NE
25
ENE
30
NE
35
NE
25
NNE
Wind State
cross-off
glassy
cross-off
cross-off
cross-off
glassy
cross
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
High Tide
8:14PM1.59m
8:44AM1.46m
8:54PM1.50m
9:21AM1.49m
9:34PM1.38m
Low Tide
2:35AM0.06m
2:47PM0.17m
3:07AM0.11m
3:31PM0.19m
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:42
5:43
 mm
Temp °C
15
16
15
14
14
15
17
17
17
16
14
13
12
15
17
18
17
16
Feels °C
13
16
14
13
13
15
15
14
13
13
12
11
10
13
13
12
11
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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