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Surf Forecasts:

Avalon-South surfForecast / NSW – Sydney North Coast / Australia

information circle12 Day Weather and Surf, issued 4 am Saturday 17 Jan 2026 AEDT
Forecast update in hr  min  s Forecast update imminent
Avalon-South surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Avalon-South sea temperature is
22.7° C
 (Which is slightly cooler than normal)

Best Forecast Surf Conditions for Avalon-South this week:

The surf forecast for Avalon-South over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jan 20) at 11PM. The primary swell is predicted to be 3.5m and 9s period with a secondary swell of 0.1m and 14s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Avalon-South in the next 12 days are 4.0m 10s and forecast to arrive on Saturday (Jan 17) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Jan 21) at 2PM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 20th Jan)11ft (3.5m) 9s
Best Surf11PM (Tue 20th Jan)11ft (3.5m) 9s
Most Powerful 5PM (Sat 17th Jan)13ft (4.0m) 10s

Table - best surf conditions forecast for Avalon-South over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 179mm), heaviest during Sun morning. Warm (max 21°C on Sat morning, min 19°C on Sun morning). Winds decreasing (fresh winds from the SE on Sun morning, light winds from the SSE by Mon night).

Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Tue afternoon. Warm (max 22°C on Wed afternoon, min 17°C on Thu night). Winds decreasing (fresh winds from the S on Wed afternoon, light winds from the SSW by Thu night).

Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
1
0
0
1
!
1
3
1
1
2
2
1
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
3.5
SE
4
SE
3.5
ESE
4
ESE
3.5
ESE
2.4
SE
1.9
SE
1.8
SE
1.6
SE
1.9
SE
2.5
SE
3
SE
3.5
SE
3
ESE
2.5
ESE
2.5
ESE
2.2
ESE
2.2
ESE
2.1
ESE
2.1
ESE
1.9
ESE
Period(s) (?)101099999998910101010101010101111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)28102962223727602065827525492408445110219302195151313911163961961952997846
Wind
(km/h)
25
SE
30
SE
25
SE
30
SE
25
SE
25
SE
20
SSE
20
SE
10
SSE
20
SSE
30
S
25
SSE
30
S
30
S
20
SSW
25
S
25
S
10
S
10
SSE
15
ESE
5
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscross-
on		crosscrosscrosscrosscross-
off		crosscrosscrosscross-
on		cross-
on		glass
High Tide
/ height (m)
8:08AM
1.54
8:48PM
1.01
8:46AM
1.59
9:26PM
1.05
9:22AM
1.62
10:03PM
1.09
9:58AM
1.63
10:40PM
1.13
10:34AM
1.61
11:19PM
1.17
11:11AM
1.56
12:00AM
1.21
11:51AM
1.47
12:44AM
1.26
Low Tide
/ height (m)
2:59PM
0.22
2:10AM
0.37
3:35PM
0.17
2:50AM
0.34
4:09PM
0.13
3:30AM
0.32
4:43PM
0.10
4:10AM
0.33
5:16PM
0.09
4:53AM
0.34
5:50PM
0.10
5:39AM
0.37
6:26PM
0.12
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sunrise6:00--6:01--6:01--6:03--6:03--6:05--6:05--
Sunset-8:07--8:07--8:06--8:06--8:06--8:05--8:05-
thunderstorm
thunderstorm
thunderstorm
thunderstorm
heavy rain
mod rain
rain showers
rain showers
clear
rain showers
thunderstorm
thunderstorm
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
Rain (mm)
57188255912-135---------
Temp. °C212120192020212120212120212220212120212120
Feels °C (?)191917161817181818191716161716171718201919
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Avalon-South surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Avalon-South at:
surf-forecast.com

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 12 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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