Avalon-South Surf Break

Lat Long: 33.64° S 151.34° E

Avalon-South Surf Forecast and Surf Report

Issued: 9 pm 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Avalon-South sea temperature is
17.8°C
0.2° 

Avalon-South surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Avalon-South surf forecast from 31 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 10PM (local time) - 1.5ft (0.4m), 10s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 4PM (local time) - 5.5ft (1.7m), 7s period, NE swell with 253 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 10PM (local time) - 1.5ft (0.4m), 10s period with ENE swell.

Best Forecast Surf Conditions for Avalon-South this week:

The surf forecast for Avalon-South over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 10PM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.8m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Avalon-South in the next 16 days are 1.7m 7s and forecast to arrive on Monday (Sep 07) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Friday (Sep 04) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Tue 1st Sep)1.5ft (0.4m) 10s
Best Surf10PM (Tue 1st Sep)1.5ft (0.4m) 10s
Most Powerful 4PM (Mon 7th Sep)5.5ft (1.7m) 7s

Table - best surf conditions forecast for Avalon-South over the next 16 days.


The Lowdown

Alright, folks, it’s Rusty here. Let’s be straight with you: the next couple of weeks are looking pretty damn flat and uninspiring for our stretch of coast. I’ve scanned the charts, and there’s no real swell on the horizon that’s going to get the heart rate up. We’re looking at a long stretch of small, weak surf. It’s the kind of outlook where you might be better off waxing the longboard just in case, but honestly, you might not even need to bother. The first week is a write-off, with only ankle-biters and onshore chop messing things up.

The second week brings a little more energy, but it’s still nothing to write home about. There’s a brief pulse of bumpy, disorganized surf on Monday the 7th and again on Tuesday the 15th, but the wind and quality aren’t there. For the most part, the swell direction is coming from the ENE, which isn't ideal for our setup. The water temp is about average for this time of year, so no surprises there. The energy levels are weak, with values mostly under 100 for much of the period. The combined energy only cracks triple digits a handful of times, like the 421 on the 7th, but that's attached to messy conditions.

Let’s break it down. The first week is a total dud. From Tuesday the 1st all the way through to Sunday the 6th, we see nothing but poor surf conditions. Wave heights are mostly under 3ft, with weak periods. There’s a little bump of about 6ft on the afternoon of Monday the 7th, but it’s coming with a cross-offshore breeze and an energy reading of 421, which sounds meaty, but the period is a short 7 seconds. It’s going to be lumpy and messy, not the clean, lined-up waves we’re after. It’s a marginal call at best, and I’d say it’s more for the kitesurfer than the surfer.

The following week is more of the same. A brief pulse on the morning of the 16th brings about 3ft of swell with a 7-second period, but again, it’s just ordinary. The wind is cross-offshore and the conditions are clean, but 3ft at that period is going to be weak and soft. The combined energy is 131, which is moderate, but it’s just not worth the paddle for most.

So here’s the reality: there are no standout days in the next 16 days. There’s no single swell that lines up with good winds and a decent period. It’s a flat, quiet spell. This is a “keep the board in the car and watch the forecast” kind of situation. We’ve got a long run of nothing, and it’ll probably take a while for things to turn around.

Keep the faith, though. It never stays this flat for long.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue afternoon, min 14°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Sat morning, min 12°C on Sat night). Wind will be generally light.

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
1
0
0
0
0
0
1
0
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)
0.3
ENE
9
0.3
ENE
11
0.4
ENE
11
0.8
NE
6
0.4
ENE
10
0.4
ENE
10
0.4
ENE
10
0.7
NE
5
0.3
ENE
10
0.4
SSE
10
0.3
ENE
10
0.3
ENE
10
0.7
NE
5
0.9
NNE
5
0.6
NE
6
0.5
NE
6
0.4
NE
6
0.2
E
10
0.9
NE
4
Wave Graph
Metric surfscale
Energy kJ
15
23
37
36
33
33
33
28
19
33
19
19
24
47
27
18
12
8
34
Wind (km/h)
10
N
10
N
15
NNW
10
NNW
20
WNW
15
WNW
15
NNW
25
WNW
15
W
10
WSW
10
NNE
20
ENE
10
NNW
15
NW
25
WNW
15
WSW
10
S
15
E
10
NNE
Wind State
cross-off
cross
cross-off
cross-off
cross-off
off
cross-off
off
off
cross-off
cross
cross-on
cross-off
cross-off
cross-off
cross-off
cross
on
cross-on
High Tide
10:08PM1.36m
10:41AM1.43m
10:53PM1.25m
11:27AM1.44m
11:46PM1.13m
12:21PM1.42m
00:52AM1.02m
1:25PM1.41m
2:15AM0.95m
2:40PM1.43m
3:45AM0.95m
3:54PM1.48m
Low Tide
4:20AM0.17m
4:56PM0.28m
4:58AM0.24m
5:53PM0.32m
5:43AM0.32m
7:02PM0.36m
6:38AM0.40m
8:23PM0.36m
7:48AM0.45m
9:47PM0.31m
9:08AM0.46m
10:57PM0.23m
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:11
6:11
6:09
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:36
5:36
5:37
5:37
5:37
5:38
 mm
2
Temp °C
15
23
26
19
26
26
20
24
24
16
20
19
17
27
26
21
17
16
15
Feels °C
14
19
22
16
22
23
17
19
19
12
16
15
15
22
20
19
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 Avalon-South Surf forecast

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

Avalon-South is 13 km (8 miles) from Dee Why. If you plan a holiday in Sydney North Coast, look for hotels and other accommodation in Dee Why. Dee Why has rooms for a wide range of budgets as well as car hire and transport links.

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