Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 Surf Forecast and Surf Report

Issued: 3 am 24 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 23 Jul 2026:

  • Best quality surf: Friday 24 Jul, 10PM (local time) - 7ft (2.1m), 13s period, S swell with cross-onshore winds.
  • Most powerful swell: Saturday 25 Jul, 1AM (local time) - 7.5ft (2.3m), 14s period, S swell with 2,037 kJ wave energy.
  • Next surfable swell (1★+): Friday 24 Jul, 1PM (local time) - 5.5ft (1.7m), 9s 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 Friday (Jul 24) at 1PM. The primary swell is predicted to be 1.7m and 9s period with a secondary swell of 0.4m and 8s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Backdoor 4 in the next 16 days are 2.3m 14s and forecast to arrive on Saturday (Jul 25) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Sunday (Jul 26) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Fri 24th Jul)5.5ft (1.7m) 9s
Best Surf10PM (Fri 24th Jul)7ft (2.1m) 13s
Most Powerful 1AM (Sat 25th Jul)7.5ft (2.3m) 14s

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


The Lowdown

Alright, surfers, Rusty here. Let’s see what’s shaking for the next couple of weeks.

The surf is already running at Backdoor 4, and we’ve got a solid run of waves ahead. The pattern starts with a clean, workable swell and builds into a big, powerful, and potentially dangerous swell event early next week, before settling down again.

Friday, July 24th kicks things off with a decent 6ft south swell. The energy is moderate (623) and it’s a 10-second period. Friday morning is clean with a cross-off breeze, but it’s a bit of a struggle to find a good one. The afternoon session is the pick of the day with the wind dropping to a light breeze, making for very good surf conditions.

Saturday, July 25th is a mixed bag. The morning is messy with a light cross-onshore wind, so it’s a bit of a write-off. But look at the afternoon – glassy conditions! The swell is still there at 5ft from the south, and with that kind of clean surface, it’s a great time to be out. The water temp is about 65°, which is a touch warmer than average for this time of year, so it’s not a shock to the system.

Sunday, July 26th keeps the good times rolling. Moderate energy (707) and a 6ft south swell with a longer 11-second period. Both the morning and afternoon are clean and very good. The longer period will give the waves a bit more punch and shape.

Monday, July 27th starts with a gift: glassy conditions and a 4ft south swell. It’s a smaller day, but the morning is clean and fun. The afternoon gets a bit of a cross-shore bump, so the morning is your window.

Then we hit a lull. Tuesday, July 28th through Wednesday, July 30th is mostly flat or poor. The swell drops to almost nothing, and the wind is not your friend. There’s a brief spike on Thursday the 30th with a 4ft SSE swell, but the period is a short 7 seconds, so it’s not going to have much push. Not worth chasing.

Friday, July 31st is a nice return to form. A 3ft south swell with a solid 11-second period and clean wind. The energy is moderate (247). Both morning and afternoon are good, with the afternoon offering a light offshore breeze for some clean lines.

Saturday, August 1st is back to small, ordinary conditions. The waves are there but they’re weak.

Now, here’s where it gets interesting. Sunday, August 2nd and Monday, August 3rd are not for the faint of heart. A massive swell rolls in. The combined energy on Sunday is a monstrous 5159, with a 15ft south swell, and it’s only going to get bigger into the afternoon. This is well over 8ft, so it’s expert territory only. If you’re not a pro, stay out of the water and watch from the shore. The wind is offshore and glassy, which is a rare combination, but the size is the dominant factor. This is a true standout for the big wave chargers.

The swell stays big and powerful through Monday, August 3rd (10ft, 1380 energy) and Tuesday, August 4th, but it’s dropping. By Thursday, August 6th afternoon, the swell has settled to a more manageable 5ft, but it’s a long-period groundswell at 14 seconds with a clean cross-off wind. This is an excellent window for experienced surfers, as the longer period will make the waves stand up and offer some proper rides.

Friday, August 7th is still a big swell event, with the wind and tide favorable but the size (7ft to 8ft) still pushing it into expert-only territory.

Finally, Saturday, August 8th brings the session back to a more relaxed level. A 4ft ESE swell (11-second period) with a light cross-off wind. The energy is 423, so it’s a solid, fun wave to finish the run.

The Best on Offer: If you’re an expert, Sunday, August 2nd and Monday, August 3rd are the heavy-hitter events. For the rest of us, the standout windows are the glassy afternoon on Saturday, July 25th, and the excellent, long-period swell on Thursday, August 6th afternoon.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Sat afternoon, min 7°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 15mm), heaviest on Wed night. Warm (max 20°C on Tue afternoon, min 12°C on Mon night). Wind will be generally light.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
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
3
!
1
2
1
3
3
1
2
1
0
0
0
0
0
0
2
2
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
S
10
1.8
S
10
2.3
S
14
1.8
S
11
1.5
S
10
1.3
S
11
1.7
S
11
1.6
S
10
1.3
S
10
1.2
S
10
1.2
S
10
0.9
S
9
0.7
S
9
0.6
S
8
0.3
S
15
0.2
S
16
0.1
S
18
1.6
S
8
1.2
SSE
7
0.9
S
7
0.7
S
12
Wave Graph
Metric surfscale
Energy kJ
593
623
2037
811
477
396
701
522
338
260
262
133
76
51
40
20
6
356
139
69
141
Wind (km/h)
20
SW
10
SSE
15
WNW
10
WNW
5
NE
15
W
5
WSW
10
ESE
10
W
5
NW
10
E
10
NNW
10
NNW
20
NNW
15
WNW
15
SSW
25
S
15
S
15
S
15
SSE
5
ESE
Wind State
cross-off
cross-off
cross-on
cross-on
glassy
cross
cross-off
cross-off
cross
glassy
cross
on
cross-on
on
cross
cross-off
off
off
off
cross-off
glassy
High Tide
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
8:10AM1.07m
8:08PM1.60m
8:46AM1.11m
8:43PM1.60m
Low Tide
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
1:38PM0.36m
2:52AM0.17m
2:16PM0.34m
3:24AM0.14m
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
rain showers
rain showers
rain showers
rain showers
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:50
6:50
6:48
6:48
6:48
6:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:08
5:09
5:09
5:10
5:12
5:12
5:13
 mm
4
11
2
2
11
Temp °C
13
13
12
16
18
16
16
16
15
15
15
15
19
20
15
16
15
15
15
14
14
Feels °C
9
10
9
13
16
13
14
13
14
13
13
13
16
15
11
12
11
12
12
11
12
  • 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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