Surf Forecasts:
Avalon-South surf forecast from 25 Aug 2026:
- Best quality surf: Friday 28 Aug, 10AM (local time) - 5ft (1.6m), 11s period, SSE swell with offshore winds.
- Most powerful swell: Saturday 29 Aug, 4AM (local time) - 5ft (1.6m), 11s period, SSE swell with 575 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 10PM (local time) - 4.5ft (1.3m), 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 10PM. The primary swell is predicted to be 1.3m 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 11s and forecast to arrive on Saturday (Aug 29) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 9s period and expected on Thursday (Aug 27) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 25th Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 10AM (Fri 28th Aug) | 5ft (1.6m) 11s |
| Most Powerful | 4AM (Sat 29th Aug) | 5ft (1.6m) 11s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, let’s be straight with you. The surf forecast for the next couple weeks is lookin’ pretty darn ordinary. There’s a long stretch of flatness ahead, so don’t get your hopes up too high. The good news is there’s one shiny day in the middle of it all, but you gotta be patient.
The first few days are a total bust. Tiny, weak waves and crappy conditions. It’s not even worth lookin’ at the ocean, let alone paddling out. This dry spell runs from now until about Friday the 28th. That’s a solid three-day gap of absolutely nothing.
Then, like a gift, Friday morning shows up with some life. We’ve got a 5-foot swell out of the SSE with an 11-second period. The energy in the water is strong, at 605. The wind is light and offshore from the WSW, so the surf is going to be clean. This is the one to circle on the calendar. The waves at Avalon-South are going to have some push, and with those clean faces, it’s going to be your best chance for a proper surf.
Saturday morning is still holding onto some of that energy, with a 5-foot SSE swell and light cross-offshore winds keepin’ things tidy. It’s not as good as Friday, but it’s still a solid option. After that, the swell fades fast and the wind gets messy.
The rest of the first week turns into junk. A tiny bump on the 1st of September gets ruined by onshore winds, so that’s a no-go. Then we drop off a cliff. From September 2nd through the 6th, we’re talkin’ ankle-biters and knee-high dribble. I wouldn’t bother.
The second week doesn’t offer much hope either. There’s a hint of a swell on the 7th, but it’s coming with strong winds that will chop it up. Not worth the effort. The ocean is going to be pretty quiet and uninviting for a while.
If you’re a beginner, that 5-foot day on Friday is right at your limit, so it’s a good day to get out there and test yourself. It’s not huge, but it’s got some power. The water temp is about 64°, which is pretty much what you’d expect for this time of year.
So, the long and short of it is: wait for Friday the 28th. That’s your window. Get out there and enjoy it because after that, it’s gonna be a desert for a while.
Rusty
Short Range ForecastHeavy rain (total 21mm), heaviest during Tue afternoon. Very mild (max 17°C on Wed morning, min 11°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sat morning. Very mild (max 17°C on Mon morning, min 12°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 7 | NE 8 | NE 8 | S 6 | ENE 8 | NE 8 | ENE 8 | ENE 9 | SSE 11 | SSE 10 | SSE 9 | SSE 10 | SSE 11 | SSE 10 | SE 9 | ENE 9 | ENE 10 | ENE 9 | ENE 9 | ENE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 160 | 173 | 140 | 181 | 84 | 62 | 40 | 68 | 561 | 501 | 336 | 417 | 214 | 183 | 86 | 31 | 36 | 17 | 16 | 16 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross | cross | cross-on | cross-off | off | cross | cross | cross-off | on | glassy | cross-off | cross | off | glassy | on | cross |
High Tide | 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 | 10:01AM1.41m | 10:08PM1.36m | |||||||
Low Tide | 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 | 4:06PM0.26m | ||||||||
 |  |  | |  |  |  |  | | |  | | | |  | | | | | | |
 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — |
 | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — |
mm | 8 | 7 | 5 | 1 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 16 | 15 | 15 | 14 | 14 | 16 | 15 | 15 | 16 | 15 | 14 | 15 | 15 | 14 | 17 | 17 | 15 |
Feels °C | 14 | 15 | 15 | 12 | 13 | 13 | 12 | 14 | 13 | 12 | 14 | 16 | 13 | 14 | 12 | 12 | 13 | 16 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 8 | NE 8 | NE 8 | ENE 8 | S 9 | S 9 | S 9 | SSE 11 | SSE 10 | ENE 8 | SSE 10 | S 10 | SSE 10 | S 9 | S 9 | S 8 | S 10 | S 10 | S 11 |
| kJ | 160 | 173 | 140 | 151 | 84 | 562 | 390 | 252 | 561 | 501 | 24 | 417 | 262 | 183 | 192 | 404 | 142 | 340 | 319 | 326 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 9 | — | S 11 | S 15 | NE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | S 11 | S 9 | SSE 11 | S 9 | SE 9 | ENE 9 | S 17 | S 16 | ENE 9 | ENE 9 |
| kJ | 29 | 15 | — | 9 | 5 | 62 | 40 | 68 | 44 | 36 | 21 | 311 | 214 | 106 | 86 | 31 | 572 | 243 | 16 | 16 |
Swell 3 Height (m) Direction Period (s) | S 16 | S 16 | — | — | — | S 15 | S 14 | S 14 | S 14 | SSW 13 | — | ENE 8 | ENE 8 | ENE 9 | ENE 9 | S 18 | ENE 10 | ENE 9 | S 16 | ENE 12 |
| kJ | 20 | 47 | — | — | — | 17 | 36 | 57 | 36 | 53 | — | 28 | 28 | 31 | 30 | 26 | 36 | 17 | 47 | 14 |
Wind waves Height (m) Direction Period (s) | N 3 | NW 3 | SSW 4 | S 6 | S 7 | — | — | — | — | S 4 | SSE 9 | — | — | — | — | — | — | — | ENE 2 | NE 4 |
| kJ | 7 | 3 | 18 | 181 | 269 | — | — | — | — | 6 | 336 | — | — | — | — | — | — | — | 1 | 12 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1 | 0 | 4 | 96 | 0 | 0 | 10 | 0 | 0 | 3 | 3 | 0 | 10 | 0 | 0 | 3 | 2 | 2 | 10 | 2 |
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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