Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 Surf Forecast and Surf Report

Issued: 10 am 18 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 18 Oct 2026:

  • Best quality surf: Sunday 25 Oct, 2PM (local time) - 5.5ft (1.7m), 8s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Thursday 22 Oct, 5PM (local time) - 7.5ft (2.3m), 7s period, ENE swell with 459 kJ wave energy.
  • Next surfable swell (1★+): Monday 19 Oct, 8AM (local time) - 2.5ft (0.8m), 8s period with SE 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 Monday (Oct 19) at 8AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.5m and 5s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Backdoor 4 in the next 16 days are 2.3m 7s and forecast to arrive on Thursday (Oct 22) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 5s period and expected on Sunday (Oct 25) at 5AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 19th Oct)2.5ft (0.8m) 8s
Best Surf 2PM (Sun 25th Oct)5.5ft (1.7m) 8s
Most Powerful 5PM (Thu 22nd Oct)7.5ft (2.3m) 7s

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


Short Range Forecast

Some drizzle, heaviest during Sun morning. Very mild (max 19°C on Tue afternoon, min 15°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 12mm), heaviest on Fri morning. Warm (max 20°C on Fri afternoon, min 16°C on Wed morning). Mainly fresh winds.

Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SE
9
1.1
SE
8
0.8
SE
8
0.7
SE
8
1
ENE
5
0.9
ENE
5
1.1
ENE
7
1.3
ENE
8
1.3
ENE
8
1.1
E
8
1.2
ENE
8
1.6
ENE
8
1.9
ENE
6
2.3
ENE
7
1.8
ENE
7
1.4
ENE
7
1.4
ENE
7
1.6
ENE
8
1.4
ENE
8
1.2
ENE
8
1.4
NE
8
Wave Graph
Metric surfscale
Energy kJ
252
177
80
60
56
46
132
181
181
169
192
288
292
459
325
191
197
298
243
163
229
Wind (km/h)
5
E
25
ENE
10
NNE
5
E
25
ENE
15
NNE
20
NE
25
ENE
15
NNE
10
ENE
25
ENE
20
NE
20
ENE
25
ENE
20
NNE
10
NE
15
ENE
5
W
10
ENE
20
ENE
5
NNW
Wind State
glassy
cross-on
cross-on
cross
cross
on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
glassy
High Tide
2:11PM1.25m
3:40AM0.91m
3:20PM1.23m
4:46AM0.97m
4:23PM1.24m
5:36AM1.07m
5:18PM1.28m
6:17AM1.19m
6:06PM1.31m
6:53AM1.32m
6:52PM1.34m
7:29AM1.45m
7:36PM1.36m
Low Tide
9:28PM0.44m
8:43AM0.65m
10:28PM0.41m
10:04AM0.63m
11:16PM0.35m
11:10AM0.56m
11:56PM0.28m
12:05PM0.47m
00:32AM0.22m
12:53PM0.37m
1:08AM0.16m
1:39PM0.26m
1:43AM0.14m
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
thunderstorm
thunderstorm
rain showers
rain showers
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
—
—
6:09
—
—
6:07
—
—
6:05
—
—
6:05
—
—
6:03
—
—
6:03
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
7:07
—
—
7:07
—
—
7:08
—
—
7:09
—
—
7:10
—
—
7:12
—
—
7:13
—
 mm
1
—
—
—
—
—
—
—
—
—
—
—
1
2
4
4
1
—
—
—
—
Temp °C
17
18
18
17
18
18
17
19
18
18
19
19
19
19
19
19
20
19
24
25
22
Feels °C
17
15
14
17
15
14
15
16
14
18
17
15
17
16
16
18
19
19
24
23
24
  • 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
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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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