Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 48 hour detailed Surf Forecast

Issued: 9 pm 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
18.6°C
0.3° 

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 (10 Sep):

  • Morning surf: Morning surf (10 Sep, local time) - 10ft (3.0m), 10s period with S swell.
  • Afternoon surf: Afternoon surf (10 Sep, local time) - 7.5ft (2.3m), 10s period with S swell.
  • Evening surf: Evening surf (10 Sep, local time) - 8ft (2.4m), 10s period with S swell.

The current surf forecast for Backdoor 4 at 2AM is: 3.5m 10s primary swell from a South direction and 0.4m 11s secondary swell from a East-southeast direction, 0.1m 25s secondary swell from a South direction (forecast issued at 09:00pm September 09). The wind direction is predicted to be offshore and the swell rating is 11.

Time (AEST) & DateWave HeightWave Period
Morning (10 Sep)10ft (3.0m)10s
Afternoon (10 Sep)7.5ft (2.3m)10s
Evening (10 Sep)8ft (2.4m)10s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Sat afternoon, min 11°C on Wed night). Winds decreasing (strong winds from the S on Wed night, calm by Fri night).

Wed
9
Thursday
10
Friday
11
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)
!
!
!
!
!
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3
3
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
S
8
3.5
S
9
3.5
S
10
3.5
S
10
3
S
10
2.4
S
9
2.2
S
9
2.4
S
10
2.4
S
10
2.4
S
10
2.3
S
10
2.1
S
10
2.3
S
10
1.9
S
10
1.8
S
10
1.7
S
10
1.6
S
10
1.5
S
10
Wave Graph
Metric surfscale
Energy kJ
1371
1971
2471
2344
1647
992
854
1092
1035
1124
1055
873
1060
687
605
529
470
432
Wind (km/h)
40
S
40
S
35
S
30
SSW
20
SW
20
SSW
25
SSW
25
S
20
S
15
SSW
20
SW
15
SW
15
SSW
15
S
15
SSE
15
SE
10
SE
5
SSE
Wind State
off
off
off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
glassy
High Tide
6:46PM1.66m
7:28AM1.31m
7:31PM1.65m
8:07AM1.40m
8:14PM1.59m
Low Tide
1:23AM0.04m
1:14PM0.21m
2:00AM0.03m
2:01PM0.17m
cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:40
5:42
 mm
Temp °C
15
15
15
13
11
13
13
15
15
15
14
13
13
15
16
16
16
16
Feels °C
6
6
6
6
5
9
8
10
11
12
10
10
10
12
13
13
15
16
  • 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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