Avalon-South Surf Break

Lat Long: 33.64° S 151.34° E

Avalon-South Surf Forecast and Surf Report

Issued: 3 pm 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Avalon-South sea temperature is
18.4°C
0.1° 

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 20 Sep 2026:

  • Best quality surf: Friday 25 Sep, 10PM (local time) - 6ft (1.8m), 7s period, NE swell with glassy winds.
  • Most powerful swell: Tuesday 22 Sep, 1PM (local time) - 6ft (1.8m), 11s period, SSE swell with 692 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 22 Sep, 7PM (local time) - 3.5ft (1.1m), 5s period with E 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 22) at 7PM. The primary swell is predicted to be 1.1m and 5s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Avalon-South in the next 16 days are 1.8m 11s and forecast to arrive on Tuesday (Sep 22) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 10s period and expected on Monday (Sep 21) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Tue 22nd Sep)3.5ft (1.1m) 5s
Best Surf10PM (Fri 25th Sep)6ft (1.8m) 7s
Most Powerful 1PM (Tue 22nd Sep)6ft (1.8m) 11s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Tue night. Warm (max 28°C on Mon morning, min 14°C on Mon afternoon). Winds decreasing (fresh winds from the SSE on Mon morning, calm by Tue afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 29°C on Sat morning, min 15°C on Wed night). Winds decreasing (fresh winds from the NE on Wed afternoon, calm by Fri night).

Sun
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
PM
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
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
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)
0.7
NE
4
0.5
S
17
0.4
NNW
4
0.1
E
11
2.5
S
10
1.5
SSE
8
1
E
5
1.3
ENE
5
1.4
ENE
6
1.7
ENE
6
1.5
NE
6
1.3
ENE
6
1.8
NE
6
1.6
NE
6
1.2
ENE
6
1.4
NE
6
1.4
NE
7
1.2
ENE
7
1.1
NE
7
1.2
NE
7
Wave Graph
Metric surfscale
Energy kJ
12
0
5
2
0
273
55
102
119
211
159
108
209
184
106
152
200
134
109
143
Wind (km/h)
10
NE
15
NW
15
SW
30
SSE
20
SSE
15
SE
5
SE
15
NE
10
NNE
30
NE
15
NNE
20
NNE
25
NE
10
N
5
NNE
20
NE
5
NNW
5
NE
15
NE
15
SSW
Wind State
cross-on
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross-on
glassy
cross-on
cross-on
cross-off
High Tide
4:27AM0.91m
4:18PM1.28m
5:17AM0.99m
5:08PM1.34m
5:57AM1.08m
5:51PM1.40m
6:32AM1.19m
6:30PM1.45m
7:06AM1.29m
7:08PM1.47m
7:40AM1.39m
7:47PM1.46m
Low Tide
10:27PM0.44m
9:41AM0.58m
11:15PM0.37m
10:43AM0.52m
11:53PM0.29m
11:32AM0.44m
00:26AM0.22m
12:17PM0.36m
00:58AM0.16m
12:59PM0.28m
1:29AM0.12m
1:41PM0.21m
2:01AM0.10m
clear
clear
clear
cloud
cloud
cloud
light rain
mod rain
rain showers
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:46
5:45
5:43
5:41
5:41
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:47
5:49
5:50
5:51
5:51
5:52
5:52
 mm
2
6
2
Temp °C
26
24
28
15
14
15
15
15
19
17
17
20
19
18
26
23
23
29
27
28
Feels °C
23
20
23
10
9
12
15
15
17
13
14
16
15
16
23
20
23
26
24
27
  • 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 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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