Avalon-North Surf Break

Lat Long: 33.63° S 151.34° E

Avalon-North Surf Forecast and Surf Report

Issued: 9 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Avalon-North sea temperature is
17.4° C
0.6° 

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


Avalon-North surf forecast from 17 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 4AM (local time) - 3.5ft (1.0m), 7s period, ESE swell with glassy winds.
  • Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 3.5ft (1.1m), 10s period, ESE swell with 235 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 18 Aug, 4AM (local time) - 3.5ft (1.0m), 7s period with ESE swell.

Best Forecast Surf Conditions for Avalon-North this week:

The surf forecast for Avalon-North over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 4AM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.3m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Avalon-North in the next 16 days are 1.1m 10s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 9s period and expected on Monday (Aug 17) at 7PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Tue 18th Aug)3.5ft (1.0m) 7s
Best Surf 4AM (Tue 18th Aug)3.5ft (1.0m) 7s
Most Powerful 4PM (Wed 19th Aug)3.5ft (1.1m) 10s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what’s cookin’ for Avalon-North.

Well, I gotta be straight with you – this is one of those stretches where the ocean just ain’t cooperating for a good chunk of the forecast. We’re lookin’ at a real quiet start, with hardly anything worth paddling out for through the first week and a half. The good news? There’s a little glimmer of hope right at the tail end of this 16-day run, but you’re gonna need some patience.

From now through most of August, the swell is tiny – we’re talkin’ knee-high dribble at best, with short, weak periods under 8 seconds and combined energy mostly down in the weak zone (values like 16 to 112). The wind is often on it or side-on, and the reports just say "poor surf conditions" again and again. There’s a glassy window on Wednesday morning the 19th, but the swell is only 2ft from the ESE at a 10-second period, so it’s surfable but very ordinary. You might get a clean little wave on Thursday morning the 20th with a light cross-offshore wind, but again it’s small – 2ft.

We go through a long dry spell. Saturday the 22nd, forget it – 1ft. The whole next week is similar, with tiny swell and not enough push. The water temp is sittin’ around 63°F, which is near enough to average for this time of year, so nothin’ wild there.

Then, on the morning of Wednesday the 27th of August, we finally see a pulse. The swell jumps to 6ft from the NE, with a 7-second period. The combined energy hits a strong 593 (moderate-to-strong), and the wind is a clean cross-offshore from the SW at 15 mph. The report says “expect good surf conditions.” This is the standout. It’s not a monster, but for a stretch that’s been almost flat for days, this will feel like a proper session. Remember though, it’s still a short-period swell, so it’ll be a bit lumpy and less organized than a long groundswell, but for a point break like this one, it should line up alright. The afternoon turns onshore, so get it early.

After that, the swell backs off quickly – Friday the 28th is 3ft and clean but ordinary, and by Saturday it’s back down to 1ft. The very end of the forecast into September is small again.

So the short story: wait it out. If you’ve got a board you don’t mind paddling around on tiny days, the glassy Wednesday the 19th or the clean Thursday the 20th might give you a few fun ones, but the real go is Thursday morning the 27th of August. That’s your best bet. The rest is a whole lot of nothin’.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Mon morning. Very mild (max 17°C on Wed morning, min 13°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Fri night. Warm (max 21°C on Thu morning, min 12°C on Fri night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
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
1
1
0
1
1
0
0
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)
1.1
ESE
7
1
ESE
7
1
ESE
7
1
ESE
7
0.9
ESE
7
0.9
ESE
8
0.6
ESE
10
1.1
ESE
10
0.7
SE
9
0.7
ESE
7
0.9
E
6
0.8
ENE
6
0.7
ENE
6
0.6
ENE
6
0.4
ENE
6
0.4
ENE
6
0.4
ENE
6
0.4
NE
6
0.5
NE
9
0.4
ENE
9
0.4
ENE
8
Wave Graph
Metric surfscale
Energy kJ
102
83
96
99
84
100
80
235
81
40
64
51
39
23
14
15
15
13
37
30
28
Wind (km/h)
5
E
10
ESE
5
ENE
10
E
10
E
5
NNW
0
WSW
15
NE
10
NNW
10
NNW
10
N
10
WNW
5
WSW
5
WNW
15
NW
15
WSW
10
SE
5
NNW
10
N
20
NE
10
WNW
Wind State
on
cross-on
cross-on
on
on
glassy
glassy
cross-on
cross-off
cross-off
cross
cross-off
cross-off
glassy
cross-off
cross-off
cross-on
glassy
cross
cross-on
cross-off
High Tide
11:22AM1.36m
11:27PM1.21m
12:05PM1.34m
00:13AM1.06m
12:54PM1.30m
1:08AM0.94m
1:50PM1.27m
2:20AM0.87m
2:55PM1.26m
3:43AM0.85m
4:00PM1.28m
4:55AM0.88m
4:58PM1.34m
Low Tide
5:31PM0.36m
5:35AM0.29m
6:27PM0.43m
6:12AM0.38m
7:32PM0.49m
6:55AM0.47m
8:48PM0.52m
7:50AM0.53m
10:06PM0.50m
9:00AM0.55m
11:10PM0.45m
10:09AM0.54m
11:58PM0.38m
rain showers
part cloud
rain showers
light rain
part cloud
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
light rain
rain showers
clear
clear
part cloud
clear
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:28
6:28
6:26
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:25
5:25
5:27
5:28
5:28
5:29
5:30
 mm
2
3
1
1
5
Temp °C
16
16
15
16
16
16
17
16
16
21
19
19
18
16
14
17
16
15
18
18
17
Feels °C
13
13
13
13
14
15
15
13
14
18
17
17
16
15
12
14
13
15
15
15
14
  • 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-North Surf forecast

The above surf forecast table for Avalon-North provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Avalon-North can be found by selecting the local surf guide option on the grey menu. Our Avalon-North 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-North) 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-North 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-North is 14 km (9 miles) from the city of 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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