Surf Forecasts:
Avalon-South surf forecast from 24 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 7PM (local time) - 4.5ft (1.4m), 8s period, NE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 10AM (local time) - 5ft (1.6m), 7s period, NE swell with 233 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 7PM (local time) - 4.5ft (1.4m), 8s period with NE 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 Tuesday (Aug 25) at 7PM. The primary swell is predicted to be 1.4m and 8s period. 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 1.6m 7s and forecast to arrive on Tuesday (Aug 25) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Thursday (Aug 27) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 25th Aug) | 4.5ft (1.4m) 8s |
| Best Surf | 7PM (Tue 25th Aug) | 4.5ft (1.4m) 8s |
| Most Powerful | 10AM (Tue 25th Aug) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, this is Rusty, checking in. Let's be real with you – the outlook for Avalon-South over the next couple of weeks is a bit of a flat spell. We've got a long stretch of very small, weak waves on the cards, so don't get your hopes up for anything epic.
Right now, through the end of August and into the first week of September, the swell is tiny. We're looking at waves mostly between 1ft and 4ft, and the energy is weak – often with combined swell energy values in the tens or low hundreds. The direction is swinging around from the NE and ENE, but the period is short, mostly under 10 seconds, so the waves lack any real punch. Winds are a mixed bag, but there are a few moments of glassy conditions, like the early morning of Friday the 28th of August, where it's dead calm and clean. The problem is, even with clean conditions, there's just no swell to ride.
The water temp is sitting around 64°F, which is pretty close to average for this time of year, so nothing unusual there.
There is a slight bump in the energy around the 29th of August, with a 3ft SSE swell pushing the combined energy up on Saturday morning under glassy conditions. That's about the best we'll see, but it's still just "surfable waves but very ordinary conditions." It's not a standout, just a fleeting moment of something that might be rideable for a beginner on a longboard.
The only real highlight? Well, the best of a bad bunch is the morning of Saturday the 29th of August. You'll get a 3ft SSE swell, clean and glassy with light winds. It's a beginner-friendly size, but don't expect much more than a knee-high dribble. The break is fairly consistent, so it might offer a few small waves. Crowds are likely, as it's "often" busy there.
For the rest of the period, it's a long, drawn-out run of poor surf. The second week of September is a total write-off, with waves barely reaching 2ft.
Honestly, if you're desperate for a paddle, keep an eye on that Saturday morning, but I'd say save your energy. The forecasts can change, but right now, we're in a flat patch.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Tue night. Warm (max 21°C on Tue morning, min 14°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Fri morning, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | NE 5 | NE 5 | NE 6 | NE 7 | ENE 7 | NE 8 | NE 8 | S 6 | NE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 | SSE 11 | SSE 10 | SSE 9 | SSE 10 | SSE 9 | SSE 9 | SSE 8 | ENE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 60 | 59 | 152 | 233 | 183 | 215 | 140 | 169 | 60 | 54 | 40 | 70 | 59 | 103 | 145 | 168 | 205 | 149 | 65 | 46 | 48 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | glassy | glassy | on | cross-off | glassy | cross-on | glassy | glassy | cross-on | cross-off |
High Tide | 5:46PM1.40m | 6:30AM1.00m | 6:27PM1.47m | 7:07AM1.08m | 7:04PM1.52m | 7:41AM1.15m | 7:40PM1.55m | 8:15AM1.23m | 8:15PM1.55m | 8:49AM1.30m | 8:51PM1.52m | 9:24AM1.36m | 9:28PM1.45m | ||||||||
Low Tide | 11:07AM0.49m | 00:37AM0.31m | 11:56AM0.43m | 1:12AM0.24m | 12:39PM0.37m | 1:43AM0.18m | 1:19PM0.32m | 2:14AM0.13m | 1:59PM0.28m | 2:44AM0.10m | 2:39PM0.25m | 3:15AM0.10m | 3:21PM0.25m | 3:46AM0.12m | |||||||
 | |  |  |  |  |  | |  | | |  | |  | | | | | | | | |
 | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — |
mm | — | — | — | — | 2 | 6 | 6 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 17 | 21 | 18 | 16 | 18 | 16 | 15 | 15 | 15 | 14 | 17 | 15 | 14 | 16 | 16 | 15 | 16 | 16 | 15 |
Feels °C | 17 | 16 | 14 | 18 | 15 | 15 | 16 | 12 | 13 | 13 | 13 | 14 | 15 | 13 | 13 | 14 | 14 | 15 | 14 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | NE 7 | ENE 7 | NE 8 | NE 8 | ENE 8 | NE 8 | S 8 | S 8 | S 8 | S 9 | S 9 | SSE 10 | SSE 9 | SSE 10 | SSE 9 | SSE 9 | SSE 8 | ENE 9 |
| kJ | 156 | 94 | 72 | 131 | 183 | 215 | 140 | 106 | 60 | 331 | 160 | 161 | 239 | 122 | 145 | 168 | 205 | 149 | 65 | 46 | 48 |
Swell 2 Height (m) Direction Period (s) | NE 5 | S 18 | S 17 | S 10 | S 10 | S 9 | S 16 | S 11 | S 15 | ENE 8 | ENE 8 | S 12 | ENE 8 | SSE 11 | S 11 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | SE 8 |
| kJ | 41 | 25 | 6 | 44 | 29 | 15 | 42 | 10 | 5 | 54 | 40 | 180 | 59 | 103 | 86 | 38 | 42 | 44 | 42 | 44 | 32 |
Swell 3 Height (m) Direction Period (s) | ENE 8 | E 13 | — | S 16 | S 16 | S 16 | — | — | S 11 | S 15 | S 14 | ENE 9 | S 15 | ENE 8 | ENE 8 | S 10 | S 10 | S 7 | SSW 9 | S 9 | S 8 |
| kJ | 6 | 3 | — | 19 | 20 | 47 | — | — | 10 | 38 | 66 | 70 | 17 | 44 | 41 | 33 | 30 | 4 | 27 | 25 | 18 |
Wind waves Height (m) Direction Period (s) | NE 5 | NE 5 | NE 6 | NE 7 | — | NW 3 | WSW 2 | S 6 | S 7 | — | — | — | — | — | — | — | — | — | — | — | NE 3 |
| kJ | 60 | 59 | 152 | 233 | — | 6 | 1 | 169 | 257 | — | — | — | — | — | — | — | — | — | — | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 187 | 11 | 1 | 1 | 0 | 0 | 170 | 0 | 0 | 7 | 0 | 0 | 10 | 0 | 0 | 10 | 0 | 0 | 117 | 0 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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