Surf Forecasts:
Avalon-South surf forecast from 16 Aug 2026:
- Best quality surf: Monday 17 Aug, 1AM (local time) - 3ft (0.9m), 6s period, ESE swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 4PM (local time) - 4.5ft (1.4m), 7s period, SSE swell with 170 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 1AM (local time) - 3ft (0.9m), 6s period with ESE swell.
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 Monday (Aug 17) at 1AM. The primary swell is predicted to be 0.9m and 6s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Avalon-South in the next 16 days are 1.4m 7s and forecast to arrive on Sunday (Aug 16) 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 1.7m 9s period and expected on Saturday (Aug 22) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 17th Aug) | 3ft (0.9m) 6s |
| Best Surf | 1AM (Mon 17th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 4PM (Sun 16th Aug) | 4.5ft (1.4m) 7s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's have a look at what's on the cards for Avalon-South over the next couple of weeks.
To be straight up with you, it's a long, slow grind to start. For the first week or so, we are looking at a whole lot of nothing special. The surf is small, the wind is messy, and the conditions just aren't cooperating. There are days where you might see a waist-high wave, but it’s almost always blown out or just lacking any real push. You’re looking at a stretch of nearly 12 days where nothing really gets a solid recommendation. It’s one of those periods where you’re better off waiting for a change in the charts.
The one glimmer in this whole outlook is the morning of Saturday the 29th of August. Now that is a standout. We get a jump in the swell to 7ft from the NE, with a period of 8 seconds. The combined swell energy is strong at 733, so there’s some real power in the water. But the best part? The wind goes glassy, WSW at just 3 mph. That is about as clean as it gets. For a beginner-friendly break like this, that 7ft might be pushing it for a total rookie, but for anyone with a bit of experience, this is going to be the session to circle. The morning will be clean, with the swell holding some shape. It’s a long way out, so keep an eye on it, but right now it's the one day worth planning for. The water temperature is sitting around 63°, which is about normal for this time of year.
Outside of that one Saturday morning, the rest of the outlook is pretty ordinary. There are a few mornings with clean, glassy conditions, like Wednesday the 19th of August and Friday the 21st, but the swell is tiny, under 3ft. You could get a longboard out and have a paddle, but there’s no real power behind it. The combined energy on those days is low, around 44 to 152, so it's weak.
Late in the month, the morning of Sunday the 30th of August looks clean with light offshore winds and a 4ft swell from the NE, but the energy is moderate at best, and it's nothing like the Saturday before.
Overall, if you’re after a wave worth getting out of bed for, you’re waiting for that Saturday the 29th. Everything else is a case of just checking the cams and hoping the forecasts shift.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Sun night. Very mild (max 16°C on Sun morning, min 13°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Wed night. Warm (max 20°C on Thu morning, min 14°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SE 6 | SSE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 11 | ESE 10 | E 6 | ESE 9 | ESE 6 | NE 4 | NE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | S 6 | NE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 152 | 170 | 55 | 70 | 73 | 78 | 88 | 82 | 98 | 80 | 81 | 99 | 55 | 27 | 100 | 42 | 33 | 53 | 29 | 66 | 22 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-off | on | on | on | on | glassy | glassy | on | cross-off | cross-off | cross-on | glassy | glassy | cross-off | cross-off | cross-off | cross | cross-off |
High Tide | 10:40AM1.36m | 10:44PM1.37m | 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 | ||||||||
Low Tide | 4:40PM0.28m | 5:01AM0.19m | 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 | ||||||||
 | |  |  | | | |  |  | | | | |  | | | | | | |  | |
 | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — |
mm | — | — | 4 | 2 | — | 1 | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 14 | 15 | 16 | 15 | 16 | 16 | 15 | 16 | 16 | 16 | 20 | 19 | 16 | 17 | 18 | 16 | 16 | 14 | 13 |
Feels °C | 12 | 12 | 12 | 14 | 13 | 13 | 13 | 13 | 14 | 15 | 13 | 15 | 17 | 17 | 16 | 13 | 14 | 13 | 10 | 7 | 9 |
Swell 1 Height (m) Direction Period (s) | S 10 | SSE 7 | S 11 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | S 11 | ESE 8 | ESE 6 | E 6 | ESE 9 | ESE 6 | ESE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | S 8 |
| kJ | 65 | 170 | 182 | 70 | 73 | 78 | 88 | 55 | 77 | 72 | 81 | 99 | 55 | 27 | 68 | 42 | 33 | 53 | 29 | 29 | 266 |
Swell 2 Height (m) Direction Period (s) | S 17 | S 14 | ESE 6 | S 10 | S 9 | S 8 | S 11 | ESE 13 | ESE 11 | ESE 10 | ESE 9 | ENE 5 | E 11 | E 10 | S 12 | S 11 | S 11 | S 10 | SSE 9 | — | NE 7 |
| kJ | 148 | 36 | 55 | 113 | 99 | 50 | 82 | 70 | 98 | 80 | 69 | 17 | 2 | 2 | 3 | 10 | 9 | 8 | 8 | — | 22 |
Swell 3 Height (m) Direction Period (s) | ENE 10 | S 18 | SSE 7 | ENE 10 | ENE 9 | S 12 | ESE 11 | E 9 | S 10 | S 8 | S 9 | S 8 | — | S 14 | E 10 | E 10 | SE 7 | — | S 15 | — | S 16 |
| kJ | 20 | 57 | 25 | 10 | 16 | 24 | 11 | 7 | 46 | 19 | 14 | 11 | — | 4 | 2 | 2 | 2 | — | 5 | — | 5 |
Wind waves Height (m) Direction Period (s) | SE 6 | ESE 6 | — | — | — | — | — | ESE 7 | — | — | ENE 5 | NE 4 | — | NE 4 | NE 6 | NW 2 | NW 2 | WNW 3 | SSW 5 | S 6 | — |
| kJ | 152 | 69 | — | — | — | — | — | 82 | — | — | 19 | 19 | — | 21 | 100 | 1 | 2 | 3 | 32 | 66 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 96 | 7 | 0 | 0 | 283 | 4 | 29 | 47 | 0 | 0 | 161 | 0 | 1 | 5 | 0 | 0 | 8 | 0 | 87 | 123 | 3 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
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.
Nearest