Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 Surf Forecast and Surf Report

Issued: 9 pm 25 Jul 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
18.4° C
0.1° 

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 25 Jul 2026:

  • Best quality surf: Thursday 30 Jul, 7AM (local time) - 10ft (3.0m), 11s period, S swell with cross-offshore winds.
  • Most powerful swell: Thursday 30 Jul, 7AM (local time) - 10ft (3.0m), 11s period, S swell with 2,155 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 1PM (local time) - 6ft (1.9m), 11s period with S 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 (Jul 26) at 1PM. The primary swell is predicted to be 1.9m and 11s period with a secondary swell of 0.2m and 8s. 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 3.0m 11s and forecast to arrive on Thursday (Jul 30) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 10s period and expected on Thursday (Jul 30) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Sun 26th Jul)6ft (1.9m) 11s
Best Surf 7AM (Thu 30th Jul)10ft (3.0m) 11s
Most Powerful 7AM (Thu 30th Jul)10ft (3.0m) 11s

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


The Lowdown

Alright, let me break this down for you. The outlook's a bit of a slow burner, but there are a few windows of opportunity.

We're looking at Backdoor 4, a reef break that's very consistent and exposed to the east. Right now, the water temp is about average for this time of year, nothing wild to report.

The early part of this week is a write-off. Sunday the 26th has some chest-high swell, around 6.6ft from the south, but the wind is light and cross, making it lumpy and marginal. Monday the 27th morning is a tease – it drops to 3.9ft, but it's glassy, dead calm. That's a beautiful window for clean, fun waves. But it's short-lived, because the afternoon turns to junk.

From Monday the 27th afternoon all the way through Wednesday the 29th, it's small, weak, and choppy. We're talking knee to waist-high dribble with fresh winds. A real nothing stretch for about two days.

Now, Thursday the 30th is where things get interesting, but it’s for experts only. We've got a solid 7.5ft to 7.9ft south swell rolling in, with a moderate offshore wind. The combined energy is strong (1106 to 1342). This is a serious, powerful groundswell with an 11-second period. For a reef break like Backdoor, this will be cranking. But if you're not solid on your backhand and comfortable in big, critical barrels, give this one a miss. It's too big for beginners and most intermediates.

Friday the 31st is even bigger, with the swell hitting 9.8ft in the morning and 8.2ft in the afternoon. The energy is very strong (3046 in the morning!). Clean conditions again with offshore winds. Again, expert-only territory. It's a standout for the big-wave crew, no doubt.

We then get a couple of days of decent, more manageable surf. Saturday, August 1st and Sunday, August 2nd both offer 6.2ft swell from the SSE. The Saturday afternoon has a clean offshore wind, and the Sunday morning is glassy with a light cross-off. That 6.2ft is a solid head-high plus, and the energy is moderate (684 to 899). This is the best bet for the average competent surfer. No crowds noted in the data, so you might have it relatively quiet.

After that, from Monday August 3rd, we fade away into tiny, weak, and mostly clean but small conditions through to around Wednesday August 6th. Thursday the 6th shows a spike back to 6.6ft from the south, but the period is short at 8 seconds, making it a bit weak and wanting, and the wind is strong from the southwest. It's a poor option.

So, to wrap it up: The standout for the big dogs is Thursday the 30th and Friday the 31st – huge, clean, and heavy. For the rest of us, the best on offer is the clean, head-high waves on Saturday afternoon or Sunday morning, August 1st and 2nd. Get on it.

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue afternoon, min 11°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 16°C on Wed afternoon, min 8°C on Wed night). Mainly fresh winds.

Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
2
2
2
0
0
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)
1.6
S
11
2
S
11
1.8
S
11
1.4
S
10
1.2
S
9
1
S
9
0.9
S
8
0.6
S
8
0.5
S
9
0.3
S
9
0.6
WNW
3
0.2
S
17
0.3
NE
6
2.3
S
10
2.4
S
11
3
S
11
3
S
10
2.5
S
10
2.1
S
9
Wave Graph
Metric surfscale
Energy kJ
655
932
714
371
235
151
105
41
38
13
7
23
6
1102
1342
1769
1730
1137
731
Wind (km/h)
20
WSW
10
W
10
E
5
WSW
5
SW
15
ENE
15
NNW
10
WNW
20
NNW
15
NW
30
W
30
WSW
30
WSW
20
SW
20
S
15
WSW
20
SW
30
SSW
20
SW
Wind State
cross-off
cross
cross
glassy
glassy
cross-on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
cross-off
High Tide
6:08AM0.93m
6:12PM1.46m
6:53AM0.97m
6:54PM1.52m
7:33AM1.02m
7:32PM1.57m
8:10AM1.07m
8:08PM1.60m
8:46AM1.11m
8:43PM1.60m
9:22AM1.16m
9:17PM1.58m
Low Tide
00:26AM0.38m
11:27AM0.47m
1:07AM0.32m
12:15PM0.43m
1:44AM0.26m
12:57PM0.39m
2:19AM0.21m
1:38PM0.36m
2:52AM0.17m
2:16PM0.34m
3:24AM0.14m
2:56PM0.34m
3:55AM0.13m
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:48
6:48
6:48
6:47
6:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:09
5:10
5:12
5:12
5:13
5:14
 mm
1
Temp °C
15
16
16
16
15
16
15
19
20
15
15
16
10
13
13
12
14
15
14
Feels °C
11
13
14
15
14
14
12
15
14
11
7
8
3
7
7
8
7
8
8
  • 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 
submit an eyeball surf report

Quick surf report for Backdoor 4:

join our community of surf reporters

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.


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.

Nearest locationNearest