Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 Surf Forecast and Surf Report

Issued: 3 pm 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
18.6° C
0.3° 

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 17 Jul 2026:

  • Best quality surf: Sunday 19 Jul, 1AM (local time) - 7ft (2.1m), 12s period, E swell with cross-offshore winds.
  • Most powerful swell: Sunday 19 Jul, 4AM (local time) - 8ft (2.4m), 11s period, E swell with 1,388 kJ wave energy.
  • Next surfable swell (1★+): Friday 17 Jul, 7PM (local time) - 3.5ft (1.0m), 6s period with E 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 Friday (Jul 17) at 7PM. The primary swell is predicted to be 1.0m and 6s 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 2.4m 11s and forecast to arrive on Sunday (Jul 19) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Jul 23) at 7AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Fri 17th Jul)3.5ft (1.0m) 6s
Best Surf 1AM (Sun 19th Jul)7ft (2.1m) 12s
Most Powerful 4AM (Sun 19th Jul)8ft (2.4m) 11s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Backdoor 4 over the next couple weeks.

Right off the bat, we’ve got a bit of a slow start. The first real window of surf that’s worth paddling out for doesn’t show up until the morning of Sunday, July 19th, but that’s a tricky one. The swell is coming in at 7ft from the east, with a period of 10 seconds, and the combined energy is a serious 1083 – that’s a lot of water moving. Thing is, the forecast says it’s actually too big for this break, so unless you’re a seasoned charger looking for a real handful, I’d give it a miss. The wind is a moderate cross-off, so it won’t be a total mess, but it’s not the call.

Now, *Monday, July 20th* morning – that’s where it gets interesting. The swell drops to a more manageable 5ft, still from the east-northeast, with a solid 10-second period. The combined energy is still strong at 726. But the real kicker? The wind is glassy – a light 5 km/h from the north-northeast. That’s as clean as it gets. The water temp is sitting at 65°, which is pretty much spot on for this time of year, so no surprises there. If you can get out that Monday morning, that’s the standout of the whole forecast. The afternoon turns choppy with a cross-on breeze, so make it a morning mission.

After that, things get ordinary again. The rest of the week into the weekend is a mix of poor conditions and marginal surf. We get a little bump on Thursday, July 23rd afternoon – a 5ft south swell at 7 seconds, period is a bit short, but with a light cross-off breeze it’ll be clean. It’s a decent option, but nothing to write home about.

Saturday, July 25th morning looks promising again for a brief moment – 4ft south swell, 10-second period, and glassy winds from the north-northwest. That’s another clean window, but it’s small. The energy is moderate at 373. The afternoon gets ruined by a cross-on breeze, so again, go early.

Then we hit a real dead zone. From Sunday, July 26th right through to Tuesday, July 28th, the surf is tiny – under 3ft – and the winds are all over the place. Not worth your time.

Wednesday, July 29th morning throws a 8ft south swell our way, combined energy of 1078, but the wind is a moderate cross-on from the northwest, and the forecast says poor conditions. That’s a messy, blown-out lump. Hard pass.

The same story continues for the end of July and into August 1st – we see some size (8ft on the 31st morning – that’s big, expert-only stuff) but the wind is onshore and strong, up to 30 km/h. It’s just not going to be a fun paddle. The final session on Saturday, August 1st afternoon has a 4ft south swell with a clean cross-off breeze, but it’s marginal and the energy is weak.

So, bottom line: the one true standout is Monday morning, July 20th – glassy conditions, solid east-northeast swell, and clean lines. After that, Saturday morning the 25th is a good backup. The rest is a lot of waiting and watching.

Stay frothy,
Rusty

Short Range Forecast

Some drizzle, heaviest during Fri night. Very mild (max 17°C on Fri night, min 14°C on Mon morning). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Wed morning, min 11°C on Wed night). Wind will be generally light.

Fri
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
1
1
!
!
!
3
3
0
2
2
1
1
0
0
1
1
0
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
E
6
0.7
S
11
1.3
ESE
6
1.5
ESE
7
2.1
E
12
2.2
E
11
2.1
E
10
1.9
ENE
10
1.6
ENE
10
1.6
ENE
10
1.5
ENE
10
1.4
ENE
10
1.4
ENE
10
1.2
ENE
10
0.9
ENE
9
0.9
ENE
9
0.8
ENE
9
0.8
ENE
9
0.6
ENE
9
1.2
S
8
Wave Graph
Metric surfscale
Energy kJ
84
110
140
222
1166
1086
900
784
555
482
416
363
356
253
149
121
94
94
64
185
Wind (km/h)
15
SSE
15
S
25
SSE
25
SSE
20
SE
20
SE
15
SE
10
ESE
0
NNE
15
ENE
10
NNW
5
NNW
10
ENE
10
NW
10
W
10
E
10
WSW
5
WSW
10
SSE
10
W
Wind State
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
on
glassy
cross
cross-on
cross
cross
cross-off
cross-off
cross-off
cross
High Tide
10:29PM1.67m
11:20AM1.25m
11:15PM1.51m
12:09PM1.27m
00:01AM1.34m
12:59PM1.28m
00:51AM1.17m
1:51PM1.29m
1:47AM1.03m
2:45PM1.31m
2:53AM0.93m
3:42PM1.32m
Low Tide
4:07PM0.28m
5:10AM0.04m
5:01PM0.35m
5:51AM0.13m
5:58PM0.42m
6:30AM0.22m
7:01PM0.48m
7:10AM0.31m
8:11PM0.53m
7:53AM0.39m
9:26PM0.53m
8:42AM0.45m
10:38PM0.50m
clear
rain showers
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:52
6:52
6:52
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:05
5:05
5:06
5:06
5:07
5:07
5:07
 mm
1
Temp °C
16
17
17
17
17
17
16
16
15
15
15
14
16
16
18
18
16
15
15
15
Feels °C
14
13
12
12
12
13
13
14
13
12
13
13
14
14
16
15
13
13
12
13
  • 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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