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

information circle16 Day Weather and Surf, issued 10 am Sunday 15 Mar 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 normal for this time of year)

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 (Mar 17) at 8AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 1.2m and 7s. 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 1.8m 7s and forecast to arrive on Tuesday (Mar 17) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Wednesday (Mar 18) at 5AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Tue 17th Mar)5ft (1.5m) 7s
Best Surf 8AM (Tue 17th Mar)5ft (1.5m) 7s
Most Powerful 5AM (Tue 17th Mar)6ft (1.8m) 7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 7mm), mostly falling on Tue night. Warm (max 30°C on Tue afternoon, min 18°C on Sun morning). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Wed morning. Warm (max 23°C on Thu afternoon, min 20°C on Wed night). Wind will be generally light.

Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
1
1
0
0
0
0
0
0
1
0
0
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.7
E
0.6
E
1.1
NE
1.1
NE
1.2
NE
1.6
NE
1.1
NE
0.9
ENE
1.2
S
1.4
SSE
1.1
SSE
0.5
ESE
0.4
ENE
0.8
SE
1
SE
0.9
SE
0.8
SE
0.7
SE
0.5
ENE
0.8
ENE
0.5
E
Period(s) (?)985656775665866667888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7852736979220103767513510115284071524744356633
Wind
(km/h)
10
NNE
20
NE
10
N
10
NE
25
NE
15
NNE
10
NW
15
SSW
15
S
20
SSE
20
SSE
5
SSW
10
SSW
15
SSE
5
SSW
10
ESE
15
ESE
5
ENE
5
ENE
15
ENE
10
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
crosscross-
on
cross-
on
crosscross-
off
cross-
off
crosscrosscross-
on
cross-
off
cross-
off
cross-
on
glasscross-
on
onglasscross-
on
cross-
on
cross
High Tide
/ height (m)
7:14PM
1.07
7:08AM
1.46
7:51PM
1.18
7:49AM
1.52
8:27PM
1.29
8:29AM
1.55
9:03PM
1.40
9:09AM
1.54
9:40PM
1.49
9:51AM
1.49
10:18PM
1.55
10:35AM
1.41
10:59PM
1.58
Low Tide
/ height (m)
1:12PM
0.28
12:46AM
0.42
1:47PM
0.19
1:32AM
0.34
2:20PM
0.11
2:16AM
0.25
2:54PM
0.06
3:00AM
0.18
3:27PM
0.05
3:45AM
0.13
4:02PM
0.07
4:32AM
0.11
4:38PM
0.12
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunrise6:52--6:54--6:54--6:54--6:56--6:56--6:56--
Sunset-7:13--7:12--7:10--7:08--7:07--7:07--7:05-
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
rain showers
rain showers
rain showers
part cloud
part cloud
thunderstorm
rain showers
rain showers
thunderstorm
part cloud
part cloud
part cloud
part cloud
Rain (mm)
--------771--1145----
Temp. °C212321222422263024222222222322212222232322
Feels °C (?)202019222220253023212022222323222223242322
  • 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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