Surf Forecasts:
Avalon-South surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 10 Sep, 1AM (local time) - 5.5ft (1.7m), 8s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 4AM (local time) - 7ft (2.2m), 8s period, SSE swell with 526 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 10PM (local time) - 1.5ft (0.4m), 10s period with SSE 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 Thursday (Sep 03) at 10PM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.4m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Avalon-South in the next 16 days are 2.2m 8s and forecast to arrive on Thursday (Sep 10) 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 2.0m 8s period and expected on Tuesday (Sep 08) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 3rd Sep) | 1.5ft (0.4m) 10s |
| Best Surf | 1AM (Thu 10th Sep) | 5.5ft (1.7m) 8s |
| Most Powerful | 4AM (Thu 10th Sep) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Howdy, Rusty here. Let’s keep it real. The next couple of weeks around Avalon-South are looking pretty flat and quiet. There’s a long stretch of tiny, weak waves and messy conditions. The first real pulse doesn’t come until the second week, and even then it’s rough. There’s a gap of several days with nothing worth paddling for.
Right now, from Thursday the 3rd through Monday the 7th of September, it’s all under 1ft to 2ft swell with short periods of 4 to 10 seconds. Combined wave energy is barely ticking over between 14 and 36. Leave the board at home. Winds are mostly moderate breezes from the west and north-west, with some glassy moments early Monday the 7th, but there’s just no size.
Tuesday the 8th of September morning sees a spike of 6ft from the SSE, period at 9 seconds, with combined energy of 426. That’s moderate energy finally arriving, but the swell direction is cross-shore and the winds are a moderate cross-off from the SSW. It’s marginal—could be lumpy and tide-dependent. This is about the only pulse worth a look, but it’s not a standout. For the rest of the week and into the next, it’s back to tiny 2ft to 4ft swell from the NE and ENE, with periods barely pushing 6 seconds. Wind stays mostly cross-off or cross-on, with a lot of choppy afternoons.
Thursday the 10th morning has 6ft from the SSE, period 7 seconds, energy 331, but the wind is light cross-shore and the quality is marginal. It’s a fleeting moment before it drops off again. After that, through to Wednesday the 16th and Thursday the 17th, it’s tiny swell again with offshore winds that’ll be clean but just no power. The water temperature this whole time is about average for the start of September—nothing wild.
So, what’s the best of it? Honestly, Tuesday the 8th and maybe Thursday the 10th mornings are your best shots, but neither is a true standout. The swell is short-period and the winds aren’t ideal. For the size, it’s a beginner-friendly chest-high day at best. If the wind drops glassy and the tide lines up, there could be a fun little wave for a patient local. Otherwise, it’s a quiet period ahead.
Stay keen, but don’t get your hopes up too high just yet.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Sat morning, min 13°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 20°C on Sat night, min 11°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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) | ENE 10 | NNE 5 | ENE 10 | SSE 10 | ENE 10 | ENE 10 | NE 5 | NNE 4 | NE 5 | NE 6 | NE 6 | E 10 | NE 8 | NE 7 | SSE 11 | E 10 | SSE 9 | SSE 8 | SE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 33 | 19 | 19 | 33 | 19 | 18 | 14 | 18 | 16 | 17 | 9 | 8 | 9 | 8 | 12 | 9 | 417 | 359 | 92 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | on | cross-off | cross-off | cross-off | off | cross-off | on | glassy | glassy | glassy | cross-off | cross-off | cross-on | off |
High Tide | 11:46PM1.13m | 12:21PM1.42m | 00:52AM1.02m | 1:25PM1.41m | 2:15AM0.95m | 2:40PM1.43m | 3:45AM0.95m | 3:54PM1.48m | 4:59AM1.01m | 5:00PM1.55m | 5:57AM1.10m | 5:56PM1.61m | |||||||
Low Tide | 5:43AM0.32m | 7:02PM0.36m | 6:38AM0.40m | 8:23PM0.36m | 7:48AM0.45m | 9:47PM0.31m | 9:08AM0.46m | 10:57PM0.23m | 10:24AM0.42m | 11:54PM0.14m | 11:28AM0.35m | 00:41AM0.07m | |||||||
 |  | |  | | | | |  | | | | | | |  | | | | |
 | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — |
 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 20 | 25 | 25 | 16 | 20 | 18 | 16 | 29 | 28 | 20 | 18 | 17 | 14 | 20 | 20 | 14 | 16 | 16 | 15 |
Feels °C | 17 | 21 | 20 | 11 | 17 | 14 | 15 | 24 | 23 | 14 | 13 | 13 | 14 | 18 | 18 | 10 | 13 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | NE 7 | S 11 | S 8 | S 7 | S 9 | NE 5 | NE 6 | S 10 | S 12 | S 9 | S 10 | S 9 | E 10 | SSE 9 | SSE 8 | S 8 |
| kJ | 71 | 73 | 52 | 24 | 382 | 115 | 39 | 85 | 16 | 17 | 290 | 714 | 220 | 314 | 189 | 9 | 417 | 359 | 116 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | NNE 5 | NE 5 | SSE 10 | NE 7 | ENE 10 | NE 5 | ENE 9 | S 9 | E 11 | NE 6 | NE 6 | S 12 | NE 7 | SSE 11 | NE 4 | S 8 | ENE 10 | SE 10 |
| kJ | 33 | 17 | 10 | 33 | 8 | 18 | 14 | 17 | 62 | 9 | 9 | 6 | 44 | 7 | 12 | 1 | 108 | 9 | 92 |
Swell 3 Height (m) Direction Period (s) | NE 6 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | S 18 | S 11 | S 16 | ENE 9 | N 4 | E 11 | E 10 | NE 8 | E 10 | ENE 10 | NE 8 | ENE 9 | N 9 | ENE 10 |
| kJ | 5 | 19 | 19 | 18 | 19 | 6 | 60 | 19 | 8 | 1 | 9 | 8 | 9 | 8 | 9 | 3 | 9 | 2 | 9 |
Wind waves Height (m) Direction Period (s) | NW 2 | NW 3 | SW 2 | SSW 5 | — | ENE 7 | — | NNE 4 | WNW 4 | SSW 4 | — | — | — | — | NE 4 | S 7 | — | — | — |
| kJ | 1 | 2 | 1 | 44 | — | 18 | — | 18 | 13 | 20 | — | — | — | — | 3 | 293 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2 | 2 | 3 | 0 | 2 | 73 | 2 | 12 | 2 | 4 | 2 | 597 | 2 | 2 | 2 | 3 | 7 | 7 | 0 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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