Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 48 hour detailed Surf Forecast

Issued: 9 pm 29 Sep 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
18.5°C
0.2° 

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 (30 Sep):

  • Morning surf: Morning surf (30 Sep, local time) - 3ft (0.9m), 15s period with S swell.
  • Afternoon surf: Afternoon surf (30 Sep, local time) - 3.5ft (1.0m), 15s period with S swell.
  • Evening surf: Evening surf (30 Sep, local time) - 2.5ft (0.8m), 14s period with S swell.

The current surf forecast for Backdoor 4 at 1AM is: 0.8m 16s primary swell from a South direction and 0.9m 12s secondary swell from a South direction, 1.1m 5s secondary swell from a Northeast direction (forecast issued at 09:00pm September 29). The wind direction is predicted to be onshore.

Time (AEST) & DateWave HeightWave Period
Morning (30 Sep)3ft (0.9m)15s
Afternoon (30 Sep)3.5ft (1.0m)15s
Evening (30 Sep)2.5ft (0.8m)14s

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


Short Range Forecast

Mostly dry. Warm (max 28°C on Thu morning, min 12°C on Tue night). Winds decreasing (fresh winds from the NE on Wed afternoon, light winds from the NNW by Wed night).

Tue
29
Wednesday
30
Thursday
1
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
1
1
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
S
10
0.6
S
17
0.8
S
16
0.9
S
16
0.9
S
16
0.8
S
15
1
S
15
0.9
S
14
0.8
S
14
0.7
S
14
1.6
NE
7
0.6
S
13
0.6
S
12
1.2
NE
7
0.9
NE
7
1.5
NE
5
1.6
NE
6
1.6
NE
7
Wave Graph
Metric surfscale
Energy kJ
186
210
343
417
401
294
434
338
257
190
240
117
100
131
69
119
196
233
Wind (km/h)
25
NE
25
NNE
20
N
15
N
10
NNW
15
NNE
25
ENE
35
NE
35
NNE
20
N
10
N
10
NNW
10
NNW
10
N
20
NE
35
NE
30
NNE
20
N
Wind State
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
on
High Tide
9:54PM1.28m
10:13AM1.60m
10:45PM1.17m
11:01AM1.56m
Low Tide
3:47AM0.22m
4:47PM0.17m
4:29AM0.30m
5:47PM0.23m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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5:33
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5:31
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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5:53
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5:54
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 mm
—
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—
—
—
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—
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Temp °C
17
16
15
13
12
17
22
20
19
19
20
20
20
25
28
25
22
23
Feels °C
12
11
12
10
9
14
16
13
13
15
17
17
17
22
22
18
16
19
  • 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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