Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 Surf Forecast and Surf Report

Issued: 9 pm 22 Jul 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.


Backdoor 4 surf forecast from 22 Jul 2026:

  • Best quality surf: Saturday 25 Jul, 1AM (local time) - 7ft (2.2m), 14s period, S swell with cross-onshore winds.
  • Most powerful swell: Thursday 30 Jul, 1AM (local time) - 11ft (3.5m), 10s period, S swell with 2,749 kJ wave energy.
  • Next surfable swell (1★+): Thursday 23 Jul, 1PM (local time) - 2.5ft (0.8m), 9s period with ENE 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 Thursday (Jul 23) at 1PM. The primary swell is predicted to be 0.8m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Backdoor 4 in the next 16 days are 3.5m 10s and forecast to arrive on Thursday (Jul 30) at 1AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 10s period and expected on Friday (Jul 24) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Thu 23rd Jul)2.5ft (0.8m) 9s
Best Surf 1AM (Sat 25th Jul)7ft (2.2m) 14s
Most Powerful 1AM (Thu 30th Jul)11ft (3.5m) 10s

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


The Lowdown

Alright folks, Rusty here. Let's take a look at what's coming down the line for Backdoor 4.

This reef setup looks at a bit of a mixed bag ahead. We've got some small windows of clean surf, but there’s also a period of huge, overpowering waves that’s really just for the experienced crew. The next few days are a slow build-up, right now the ocean is giving us very little. Conditions start off pretty ordinary with a 3 ft ENE swell (125 energy) and a cross-wind, making it a poor call. Things finally start to get going on the morning of Friday the 24th, but it's still pretty marginal with the wind.

The real standout session looks to be Friday afternoon, July 24. The swell jumps to 6 ft from the south with a period of 10 seconds, and combined with moderate wave energy (640), the wind swings light and offshore. This is going to be clean and fun. It's a consistent spot, so expect some company in the water, but for that afternoon slot, it’s the pick of the week.

The following days, Saturday the 25th and Sunday the 26th, hold similar 5 to 6 ft south swells. Sunday morning, July 26, in particular looks like a very good option with an 11-second groundswell and clean conditions. That swell (892 energy) will have more push to it. Just a heads-up, long period groundswell like that can make a reef break like this stand up nicely, but it might also make the paddle-out a bit easier with longer lulls.

Now, things get big. From July 30 through to August 5, we're seeing a massive run of surf, with wave heights over 8 ft and up to 15 ft on July 30. The combined swell energy is enormous (8957). The wind is favorable and the faces will be clean, but this is expert territory only. The wave size will shut the place down for the average punter; it's honestly more interesting for the kite crew than paddle surfing during that stretch.

We then get a drop back down to a much more manageable size. Sunday morning, August 2, offers up another absolute gem, with a 5 ft SE groundswell (578 energy) and glassy conditions. This will be clean and the session will be a welcome return to form. The surf continues to be fun but fades through Monday, August 3.

From there, the forecast gets sketchy. We've got a few days of poor conditions, until a bigger, but very messy swell shows up at the start of August. The end of the forecast window around August 7 finishes on a calm, glassy note with a 5.5 ft swell (326 energy) that should offer up some manageable final waves.

There are some gaps in the quality here, especially from the start of the second week, but it’s a classic spot that tends to fire when the conditions line up.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Thu morning, min 7°C on Fri night). Winds decreasing (fresh winds from the WSW on Thu night, calm by Fri afternoon).

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Sun night. Very mild (max 18°C on Tue afternoon, min 11°C on Sat night). Wind will be generally light.

Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
2
3
!
2
2
1
3
3
1
1
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)
0.9
ENE
9
0.9
ENE
9
0.8
ENE
9
0.5
ENE
9
1.7
S
10
1.8
S
10
2.2
S
14
1.8
S
11
1.4
S
10
1.2
S
11
1.8
S
12
1.6
S
11
1.3
S
10
1.2
S
9
1
S
9
0.8
S
8
0.5
S
8
0.3
S
7
0.2
S
9
Wave Graph
Metric surfscale
Energy kJ
153
116
90
44
546
585
1837
797
416
348
885
564
314
235
154
84
29
9
7
Wind (km/h)
20
W
15
W
10
SSE
25
SW
15
SW
10
SE
15
NW
10
WNW
5
NE
20
SW
10
SW
10
ESE
10
NW
10
WNW
15
E
10
W
5
NNW
5
NE
15
W
Wind State
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-on
cross
glassy
cross-off
cross-off
cross-off
cross-on
cross
cross
cross
cross-on
glassy
cross
High Tide
2:53AM0.93m
3:42PM1.32m
4:06AM0.89m
4:36PM1.36m
5:13AM0.89m
5:27PM1.40m
6:08AM0.93m
6:12PM1.46m
6:53AM0.97m
6:54PM1.52m
7:33AM1.02m
7:32PM1.57m
Low Tide
8:42AM0.45m
10:38PM0.50m
9:37AM0.49m
11:38PM0.44m
10:34AM0.49m
00:26AM0.38m
11:27AM0.47m
1:07AM0.32m
12:15PM0.43m
1:44AM0.26m
12:57PM0.39m
2:19AM0.21m
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:50
6:50
6:50
6:48
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:07
5:08
5:09
5:09
5:10
5:12
 mm
2
Temp °C
16
18
18
12
13
13
12
16
18
15
14
15
15
16
17
15
16
18
15
Feels °C
12
15
15
5
9
11
8
13
15
11
12
12
13
14
16
11
14
16
12
  • Map Icons:
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  • 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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