Back Beach Surf Break

Lat Long: 30.94° S 115.28° E

Back Beach Surf Forecast and Surf Report

Issued: 1 pm 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Back Beach sea temperature is
18.4°C
0.6° 

Back Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Back Beach surf forecast from 30 Aug 2026:

  • Best quality surf: Friday 4 Sep, 5PM (local time) - 13ft (4.0m), 15s period, WSW swell with cross-onshore winds.
  • Most powerful swell: Sunday 6 Sep, 2AM (local time) - 16ft (5.0m), 13s period, WSW swell with 7,761 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 11PM (local time) - 7ft (2.2m), 13s period with WSW swell.

Best Forecast Surf Conditions for Back Beach this week:

The surf forecast for Back Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 02) at 11PM. The primary swell is predicted to be 2.2m and 13s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Back Beach in the next 16 days are 5.0m 13s and forecast to arrive on Sunday (Sep 06) at 2AM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 2nd Sep)7ft (2.2m) 13s
Best Surf 5PM (Fri 4th Sep)13ft (4.0m) 15s
Most Powerful 2AM (Sun 6th Sep)16ft (5.0m) 13s

Table - best surf conditions forecast for Back Beach over the next 16 days.


The Lowdown

Alright folks, Rusty here, checkin' in with a look at the next couple of weeks for Back Beach. It's a bit of a mixed bag, so let's get into it.

The long-range charts are showing a lot of energy, but the problem is, it's too much of a good thing. We've got a solid run of south-west swell, but a lot of it is just too big for this break to handle cleanly, so we're gonna have to pick our moments.

The water is sitting at 65°F, which is pretty much what you'd expect for this time of year.

Alright, let's start with what's on offer. Sunday afternoon (30th August) we'll see some 8ft swell from the WSW, with a very long 17-second period. That's a lot of juice in the water, the combined energy is pumping at 4423. The wind is a light cross-on from the WSW though, so it'll be a little bumpy. It's a consistent spot, so you'll get waves, but it's a bit marginal for the conditions.

Monday and Tuesday (31st August & 1st September) the swell drops a little, but the wind swings around and picks up, making it a choppy mess. Not worth paddling out for.

Wednesday (2nd September) is interesting. The morning sees the swell at 7ft from the WSW, a 14-second period, but the wind is light and onshore from the SSW. That's a big positive, it'll be clean. The energy is moderate at 1906, but it's a smaller window. The afternoon stays clean with a light onshore breeze too. This is your best bet for the first week if you're a beginner or intermediate, as the swell is manageable.

Thursday (3rd September) the swell picks back up to 8ft, but the wind turns cross and then gets strong out of the NW, making it lumpy. Not great.

Then we hit the big stuff. From Friday (4th September) through to the morning of Monday (7th September), the swell is 10ft to 13ft. The combined energy is massive, hitting 6228 on Friday afternoon. The wind is poor, and it's just too big for Back Beach. It's an exposed spot, and at that size, it's a washing machine. Honestly, for a few days there, it looks more interesting for kite surfing than paddle surfing.

Now, here's the real standout. Monday morning (7th September). The swell is still a solid 12ft from the WSW, with a very long 17-second period. The combined energy is a massive 7339. But the magic is the wind: a light cross-offshore breeze from the ESE. That's going to groom it into something special. It's still a big, powerful groundswell, so it might be a bit too straight for the beach break, but the clean conditions will make it incredible. This is for the experts only. The water is still 65°F.

The glassy conditions carry into Tuesday morning (8th September) with a 13ft swell from the WSW, a 17-second period, and a light offshore breeze from the NE. The energy is 8411. Another absolute bomb for the big-wave crew. It's a consistent spot, so you can expect waves, but be ready for the crowds because of that.

After that, we get a nice run of clean mornings from Wednesday (9th) through to Thursday (10th) with 10ft to 12ft swell and light cross-offshore winds. Still big, still for experts, but clean.

The swell finally drops back to a more manageable 7ft on Friday morning (11th September), with a 14-second period and onshore winds. It's a step down in quality.

Saturday (12th September) and Sunday (13th September) we see another pulse of 12ft swell, but with light winds, so it'll be clean but too big for the average surfer.

The run finishes on Monday (14th September) with the swell dropping to 8ft but with strong onshore winds making a mess of it.

So, to sum it up: the first week has a decent chance on Wednesday morning (2nd September) for the smaller stuff. But the absolute standout, the best on offer, is Monday morning (7th September) and Tuesday morning (8th September) for the big wave chargers. Just be careful out there.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Mon night. Warm (max 20°C on Sun afternoon, min 14°C on Tue morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Very mild (max 18°C on Thu night, min 13°C on Thu morning). Winds decreasing (strong winds from the WSW on Thu night, calm by Fri night).

Sun
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
3
2
0
2
1
3
2
2
4
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)
2.5
WSW
17
2.5
WSW
16
2.4
WSW
17
2.3
WSW
17
2.2
WSW
16
2.4
WSW
16
2.2
WSW
15
2.1
WSW
14
2.2
WSW
14
2.3
WSW
13
2.2
WSW
13
2.5
WSW
14
2.5
WSW
14
3
WSW
14
3.5
WSW
14
4
WSW
15
3.5
WSW
16
3
WSW
14
3
W
14
5
WSW
13
Wave Graph
Metric surfscale
Energy kJ
4423
3037
3270
3028
2414
2827
2325
1874
1906
1807
1622
2618
2989
3985
4505
6228
6575
4005
3809
7761
Wind (km/h)
10
WSW
10
WNW
15
W
20
WSW
20
SSE
20
SSE
15
SSW
10
SSW
15
SSW
10
SSW
5
NE
15
NW
30
NW
35
W
25
SW
20
SSW
0
NNW
25
NW
40
NW
55
SSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
on
on
on
glassy
cross
cross
cross-on
on
cross-on
glassy
cross
cross
on
High Tide
11:12PM0.46m
10:39AM0.39m
11:28PM0.51m
10:46AM0.31m
11:52PM0.56m
00:27AM0.59m
1:21AM0.61m
2:57AM0.62m
4:44AM0.63m
Low Tide
4:43PM0.21m
5:13AM0.26m
4:38PM0.23m
6:24AM0.25m
4:20PM0.23m
2:58PM0.20m
1:44PM0.13m
2:04PM0.06m
2:35PM0.02m
clear
clear
cloud
part cloud
rain showers
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
cloud
rain showers
cloud
clear
part cloud
cloud
rain showers
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:35
6:33
6:33
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:01
6:01
6:02
6:02
6:04
6:04
 mm
2
3
1
14
Temp °C
20
18
18
19
18
15
16
15
15
16
15
16
16
18
16
16
14
15
17
14
Feels °C
19
17
16
16
16
11
12
12
12
13
13
12
10
12
10
10
11
10
10
3
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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 Back Beach Surf forecast

The above surf forecast table for Back Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Back Beach can be found by selecting the local surf guide option on the grey menu. Our Back Beach 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 (Back Beach) 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 Back Beach 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.

Are you planning a holiday in Perth City Coast? If you are looking for accommodation near Back Beach, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 125 km (78 miles) away.

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