Backdoor 4 Surf Break

Lat Long: 33.28° S 151.57° E

Backdoor 4 Surf Forecast and Surf Report

Issued: 3 pm 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Backdoor 4 sea temperature is
17.4° C
1.0° 

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 14 Aug 2026:

  • Best quality surf: Saturday 15 Aug, 1PM (local time) - 5ft (1.5m), 9s period, S swell with offshore winds.
  • Most powerful swell: Saturday 15 Aug, 7PM (local time) - 5.5ft (1.7m), 8s period, S swell with 359 kJ wave energy.
  • Next surfable swell (1★+): Friday 14 Aug, 10PM (local time) - 3.5ft (1.1m), 7s 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 (Aug 14) at 10PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.3m and 10s. 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 1.7m 8s and forecast to arrive on Saturday (Aug 15) at 7PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 8s period and expected on Sunday (Aug 16) at 4PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Fri 14th Aug)3.5ft (1.1m) 7s
Best Surf 1PM (Sat 15th Aug)5ft (1.5m) 9s
Most Powerful 7PM (Sat 15th Aug)5.5ft (1.7m) 8s

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


The Lowdown

Alright, folks, Rusty here. Let’s talk about the next couple of weeks. The ocean’s got a bit of a story to tell, and it’s not all good news, but there are some windows you’re gonna want to keep an eye on.

Right off the bat, Friday the 14th and into Saturday morning, it’s small but clean. We’re looking at chest-high stuff, around 4ft with a south swell. The water’s sitting at 63°, which is a bit colder than we’re used to for this time of year. It’s a gentle breeze, cross-offshore, and the waves are clean. It’s not going to blow your mind, but it’s a fine way to ease into the weekend.

Saturday afternoon and Sunday sees a little more push, with a bit of a bump in energy. The swell goes up to 5ft, still from the south/southeast. The wind stays cross-off, and it’s clean, but the tide and the conditions look a little more marginal. It’s surfable, but you’re gonna have to pick your moments.

Monday and Tuesday, the swell backs off a touch to 4ft. The wind is light, mostly offshore or cross-off, so the surface is going to be glassy. It’s not big, but it’s clean, and there are some fun little lefts and rights to be had. The energy is weak-to-moderate. It’s a good chance to get the log out or work on your turns. Wednesday stays similar, but the period jumps up to 10 seconds, which adds a bit more push.

Then we hit a lull. Thursday the 20th through Saturday the 22nd, it gets poor. The swell dips below 3ft, the energy drops off a cliff, and we get some onshore and cross-onshore winds. It’s gonna be small and chopped up. This is a good time to do some maintenance on your boards or catch up on sleep. There’s a stretch of about three days where it's just not worth paddling out.

Now, here’s where it gets interesting. Sunday the 23rd, a new, more powerful south swell starts to fill in. It jumps to 6ft, and the energy climbs. That afternoon, it gets even better. We’re looking at 6ft of south swell with an 11-second period, and the energy is strong. This is the first real standout of the window. It's a proper groundswell, and it’s going to have some power behind it.

Monday the 24th still has some decent waves from that swell, but the energy is fading a bit. The real monster is on Tuesday the 25th. The forecast is for a massive 11ft south swell. The energy reading is huge. The wind is light and glassy in the morning, and the tide is favorable. But, and this is a big but, this break cannot handle that size. It’s going to be way too big and dangerous. This is for experts only, and even then, it's probably going to be a washing machine. The same goes for Wednesday the 26th, with 8ft to 10ft waves and a strong onshore wind. That’s a mess. Honestly, with that much swell and those winds on a reef, the setup looks more interesting for kite surfing than paddle surfing.

After that big pulse passes, it settles down. Later in the week, from Thursday the 28th, we see a more manageable 5ft southeast swell roll in, with a 10-second period. The energy is moderate. The wind is cross-off and clean. It’s a final little push to finish the week on a decent note, but it's not on the same level as that Sunday the 23rd session. So, if you’ve got one day to pick out of the next two weeks, make it Sunday the 23rd. That afternoon is going to be the one with the most size, energy, and clean conditions. It’ll be worth the wait.

Rusty, out.

Short Range Forecast

Moderate rain (total 10mm), heaviest on Sat afternoon. Very mild (max 16°C on Fri afternoon, min 12°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Mon night. Very mild (max 16°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light.

Fri
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
2
2
2
1
1
2
2
1
1
2
1
2
2
1
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)
1.2
S
8
0.9
SSE
7
1.2
S
9
1.5
S
9
1.5
S
7
1.6
SSE
7
1.4
SE
7
1
S
11
1.2
ESE
7
1.1
ESE
7
1.2
ESE
7
1
ESE
7
1
ESE
7
1
ESE
7
1.1
ESE
7
1.2
ESE
10
1.2
ESE
7
1
ESE
7
0.9
ESE
7
1.1
E
6
Wave Graph
Metric surfscale
Energy kJ
187
91
235
340
214
209
183
229
136
117
124
93
99
111
113
269
134
88
66
104
Wind (km/h)
15
ESE
5
SSE
10
SSW
20
SSE
15
SW
20
SE
20
SSE
15
ESE
10
SE
15
ESE
20
ESE
10
SSE
15
ESE
0
S
5
S
15
E
10
WNW
5
NNE
20
ENE
15
N
Wind State
cross-off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
glassy
off
cross
cross-on
on
cross-on
on
High Tide
9:19PM1.68m
9:58AM1.36m
10:01PM1.55m
10:39AM1.38m
10:43PM1.39m
11:21AM1.37m
11:25PM1.23m
12:04PM1.35m
00:11AM1.08m
12:52PM1.32m
1:05AM0.96m
1:49PM1.28m
2:17AM0.88m
Low Tide
3:50AM0.03m
3:50PM0.23m
4:26AM0.10m
4:39PM0.29m
5:00AM0.19m
5:30PM0.36m
5:34AM0.29m
6:25PM0.44m
6:11AM0.39m
7:30PM0.50m
6:53AM0.47m
8:46PM0.53m
clear
rain showers
rain showers
rain showers
rain showers
part cloud
clear
rain showers
clear
rain showers
rain showers
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:30
6:28
6:28
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:22
5:23
5:23
5:24
5:25
5:27
5:27
 mm
1
2
2
2
3
1
5
Temp °C
16
16
15
16
16
16
16
15
15
15
15
15
16
16
16
16
16
15
16
16
Feels °C
14
15
13
12
13
11
12
12
12
11
11
12
13
14
14
13
14
12
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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