Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 Surf Forecast and Surf Report

Issued: 4 pm 21 Oct 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
20.5°C
1.4° 

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


Backdoor 4 surf forecast from 21 Oct 2026:

  • Best quality surf: Sunday 25 Oct, 2AM (local time) - 7ft (2.2m), 8s period, NE swell with onshore winds.
  • Most powerful swell: Sunday 25 Oct, 8PM (local time) - 8ft (2.4m), 9s period, NE swell with 850 kJ wave energy.
  • Next surfable swell (1★+): Sunday 25 Oct, 2AM (local time) - 7ft (2.2m), 8s period with NE swell.

Best Forecast Surf Conditions for Backdoor 4 this week:

The surf forecast for Backdoor 4 over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Oct 25) at 2AM. The primary swell is predicted to be 2.2m and 8s period with a secondary swell of 1.8m and 8s. Another secondary swell of 0.1m and 21s is also forecast. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Backdoor 4 in the next 16 days are 2.4m 9s and forecast to arrive on Sunday (Oct 25) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Monday (Oct 26) at 2PM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 25th Oct)7ft (2.2m) 8s
Best Surf 2AM (Sun 25th Oct)7ft (2.2m) 8s
Most Powerful 8PM (Sun 25th Oct)8ft (2.4m) 9s

Table - best surf conditions forecast for Backdoor 4 over the next 16 days.


Short Range Forecast

Heavy rain (total 28mm), heaviest during Wed night. Warm (max 20°C on Wed afternoon, min 16°C on Fri night). Winds decreasing (fresh winds from the NE on Fri afternoon, light winds from the NW by Sat morning).

Days 5-7 Weather Summary

Moderate rain (total 10mm), heaviest on Mon afternoon. Warm (max 27°C on Sun afternoon, min 14°C on Mon night). Winds decreasing (fresh winds from the NW on Sun night, light winds from the SSE by Mon night).

Wed
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
!
0
0
0
0
2
2
0
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
ENE
8
1.7
ENE
8
2.1
ENE
7
2.2
ENE
8
1.7
ENE
7
1.7
ENE
7
2.4
ENE
7
1.9
ENE
8
1.4
ENE
8
1.7
ENE
8
2.2
NE
8
1.8
NE
8
1.6
ENE
8
1.6
ENE
9
1.4
ENE
9
1.7
S
7
1.6
S
9
1.1
E
8
1
S
9
1.2
E
6
Wave Graph
Metric surfscale
Energy kJ
322
322
408
551
285
271
611
430
243
354
602
439
368
395
320
286
390
149
159
112
Wind (km/h)
25
ENE
20
NE
30
ENE
30
NE
25
NE
30
NE
40
NE
15
N
15
ENE
25
NE
15
N
20
N
20
N
25
NNW
15
WNW
20
S
10
W
20
W
10
SE
25
W
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
on
on
on
cross
off
cross
cross
cross-off
cross-off
High Tide
5:18PM1.28m
6:17AM1.19m
6:06PM1.31m
6:53AM1.32m
6:52PM1.34m
7:29AM1.45m
7:36PM1.36m
8:05AM1.57m
8:22PM1.35m
8:43AM1.66m
9:08PM1.32m
9:23AM1.72m
9:57PM1.26m
Low Tide
11:56PM0.28m
12:05PM0.47m
00:32AM0.22m
12:53PM0.37m
1:08AM0.16m
1:39PM0.26m
1:43AM0.14m
2:24PM0.16m
2:20AM0.13m
3:10PM0.08m
2:59AM0.16m
3:58PM0.04m
3:39AM0.20m
rain showers
thunderstorm
rain showers
light rain
rain showers
rain showers
rain showers
clear
clear
part cloud
clear
clear
part cloud
rain showers
thunderstorm
mod rain
part cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
6:05
—
—
6:03
—
—
6:03
—
—
6:01
—
—
6:01
—
—
6:00
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
—
—
7:10
—
—
7:12
—
—
7:13
—
—
7:13
—
—
7:14
—
—
7:15
—
 mm
3
7
5
4
5
3
1
—
—
—
—
—
—
1
1
8
—
—
—
—
Temp °C
20
19
19
18
19
19
19
19
20
21
21
26
27
24
24
17
17
19
22
19
Feels °C
17
15
16
13
16
16
15
14
19
18
19
24
26
22
24
13
17
13
19
16
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Backdoor 4 Surf forecast

The above surf forecast table for Backdoor 4 provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Backdoor 4 can be found by selecting the local surf guide option on the grey menu. Our Backdoor 4 surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Backdoor 4) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Backdoor 4 may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Backdoor 4 is 14 km (9 miles) from the city of Catherine Hill Bay. If you plan a holiday in Newcastle, look for hotels and other accommodation in Catherine Hill Bay. Catherine Hill Bay has rooms for a wide range of budgets as well as car hire and transport links.

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