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

information circle16 Day Weather and Surf, issued 10 pm Saturday 28 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
24.9° C
(Which is 2.1°C warmer than 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 Sunday (Mar 29) at 5AM. The primary swell is predicted to be 3.5m and 11s period with a secondary swell of 0.1m and 12s. 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 3.5m 11s and forecast to arrive on Sunday (Mar 29) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 11s period and expected on Sunday (Mar 29) at 5AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sun 29th Mar)11ft (3.5m) 11s
Best Surf 5AM (Sun 29th Mar)11ft (3.5m) 11s
Most Powerful 5AM (Sun 29th Mar)11ft (3.5m) 11s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 22°C on Tue afternoon, min 15°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Wed afternoon, min 19°C on Tue night). Wind will be generally light.

Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thursday
02
Friday
03
Sat
04
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
!
3
2
3
2
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
4
SSE
3
SSE
2.5
SSE
2
SSE
1.5
SSE
1.3
SSE
1.1
SE
0.9
SE
0.7
SE
0.5
SE
0.8
ENE
0.9
ENE
1.1
NE
1
ENE
1
ENE
1.3
ENE
0.9
ENE
0.8
ENE
0.4
SSE
1.1
S
1
E
Period(s) (?)121110109988875556666712610
Wave
Graph
(?)Metric surfscale
Energy kJ (?)416421641378756377280158915525324274718212064614877198
Wind
(km/h)
15
SW
15
SSW
15
SSE
5
SSW
5
SW
15
E
5
N
0
ESE
15
NE
10
NNW
10
NNE
20
ENE
10
N
10
NNE
20
NE
10
N
10
NNE
15
SE
15
SSE
25
SSE
25
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
crosscross-
off
glassonglassglasscross-
on
cross-
off
cross-
on
cross-
on
crosscross-
on
cross-
on
crosscrosscross-
on
crosscrosscross
High Tide
/ height (m)
6:18AM
1.46
7:12PM
1.18
7:09AM
1.47
7:52PM
1.28
7:54AM
1.46
8:27PM
1.37
8:35AM
1.43
9:01PM
1.44
9:13AM
1.37
9:33PM
1.49
9:50AM
1.30
10:05PM
1.50
10:27AM
1.21
Low Tide
/ height (m)
11:56PM
0.44
1:02PM
0.17
12:54AM
0.36
1:41PM
0.14
1:44AM
0.29
2:16PM
0.13
2:28AM
0.23
2:47PM
0.15
3:10AM
0.20
3:17PM
0.18
3:50AM
0.18
3:46PM
0.23
4:29AM
0.20
4:15PM
0.29
Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thursday
02
Friday
03
Sat
04
Sunrise-7:03--7:03--7:05--7:05--7:05--7:07--7:07-
Sunset--6:54--6:52--6:52--6:51--6:49--6:47--6:46
clear
clear
clear
part cloud
cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
thunderstorm
rain showers
light rain
Rain (mm)
------------------543
Temp. °C191920201921202122212224222223222224222120
Feels °C (?)151617191920182221202223212222222223242017
  • 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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