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

information circle12 Day Weather and Surf, issued 10 pm Monday 01 Dec 2025 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
22.1° C
(Which is 1.4°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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 04) at 5AM. The primary swell is predicted to be 1.0m and 5s period with a secondary swell of 0.8m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Avalon-South in the next 12 days are 2.5m 8s and forecast to arrive on Saturday (Dec 06) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 9s period and expected on Tuesday (Dec 02) at 5PM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 4th Dec)3.5ft (1.0m) 5s
Best Surf 2AM (Fri 5th Dec)6.5ft (2.0m) 7s
Most Powerful 8PM (Sat 6th Dec)8ft (2.5m) 8s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Mon night. Warm (max 25°C on Thu afternoon, min 13°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Sun morning. Warm (max 34°C on Fri morning, min 18°C on Sun morning). Winds decreasing (fresh winds from the NNE on Thu night, light winds from the N by Fri night).

Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Mon
08
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
2
0
0
2
0
0
2
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
E
0.3
E
0.3
E
0.2
E
0.3
E
0.9
ENE
1.1
NE
0.6
NE
1.3
NE
2
NE
1.3
NE
1.9
NE
2.3
NE
1.4
NE
2.5
NE
1.9
NE
1
NE
2.2
SSE
1.7
SSE
0.9
SSE
1.2
ENE
Period(s) (?)10101010104555776887888874
Wave
Graph
(?)Metric surfscale
Energy kJ (?)171717817235520763631512605672266254901385853537755
Wind
(km/h)
20
WSW
25
S
25
SSE
10
WSW
10
NE
25
NE
10
NNE
10
NE
30
NE
10
NNW
10
N
30
NE
15
N
15
N
30
NE
5
SSW
25
S
25
SSE
10
SE
15
ENE
30
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcrosscrosscross-
off
cross-
on
cross-
on
crosscross-
on
cross-
on
cross-
off
crosscross-
on
crosscrosscross-
on
cross-
off
crosscross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
6:27AM
1.56
6:47PM
1.21
7:14AM
1.69
7:46PM
1.20
8:01AM
1.78
8:43PM
1.19
8:50AM
1.84
9:39PM
1.16
9:39AM
1.85
10:34PM
1.13
10:29AM
1.81
11:29PM
1.09
11:21AM
1.73
Low Tide
/ height (m)
11:52PM
0.16
12:56PM
0.22
12:40AM
0.16
1:52PM
0.09
1:29AM
0.18
2:46PM
-0.01
2:17AM
0.20
3:40PM
-0.06
3:06AM
0.23
4:33PM
-0.07
3:56AM
0.28
5:27PM
-0.04
4:48AM
0.33
6:20PM
0.03
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Mon
08
Sunrise-5:37--5:37--5:37--5:37--5:37--5:37--5:37-
Sunset--7:50--7:51--7:52--7:52--7:52--7:53--7:54
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
cloud
cloud
part cloud
clear
Rain (mm)
1---------------1----
Temp. °C171819182022192425223433283234271819192122
Feels °C (?)141213131818162322183029232931261415181818
  • 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 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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