Surf Forecasts:
Avalon-South surf forecast from 3 Sep 2026:
- Best quality surf: Friday 4 Sep, 4AM (local time) - 1.5ft (0.4m), 10s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 1AM (local time) - 8ft (2.5m), 9s period, SSE swell with 888 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 4AM (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 Friday (Sep 04) at 4AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.5m and 7s. 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 2.5m 9s and forecast to arrive on Thursday (Sep 10) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 10s period and expected on Thursday (Sep 10) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 4th Sep) | 1.5ft (0.4m) 10s |
| Best Surf | 4AM (Fri 4th Sep) | 1.5ft (0.4m) 10s |
| Most Powerful | 1AM (Thu 10th Sep) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s chew the fat on what’s coming down the pipe for the next couple of weeks.
Well, I’m not gonna sugarcoat it – this is a lean stretch. The whole 16-day window is looking pretty flat and frustrating. The wave energy is almost non-existent, with the combined energy barely reaching 39 (weak) at its best, and often just single digits. There’s a tiny bump of energy on Tuesday the 8th of September, with the combined energy hitting 572 (strong), but even that is marked as “poor surf conditions” and comes with a messy cross-shore wind. For the most part, we’re looking at ankle-snappers or nothing at all.
The standout, if you can call it that, is Avalon-South. It’s a beginner-friendly spot that’s fairly consistent, but it’s just not getting any love from the swell window. The optimum swell direction is from the ENE, but the small pulses we see are mostly from the NE or SSE. The water temperature is about average for this time of year, so nothing wild there.
The best chance of anything remotely rideable is on Tuesday, September 8th. The morning brings a 7ft SSE swell with a short period of 8 seconds, but the wind is a messy cross-shore from the S at 12 mph. The combined energy is 572 (strong), but it’s going to be a lumpy, choppy mess. The afternoon settles a bit with a 6ft swell and lighter SE winds, which is “marginal” at best. This is only for the experienced crew; 6ft is pushing it for beginners, and the quality is poor.
After that, it’s back to tiny, weak dribble. From Wednesday the 9th right through to the end of the 16 days, the swell is consistently under 3ft, with periods mostly under 10 seconds. The wind is a mixed bag of cross-off and cross-on, but the swell just isn’t there to make it worthwhile. There’s a long gap of very poor surf from the 9th onward.
Honestly, if you’re desperate for a paddle, Tuesday the 8th at Avalon-South is the only thing even worth a look, and that’s a big maybe. The rest of the time, the board stays in the car. The setup looks more interesting for a kite surfer than a paddle surfer in those bigger, windier moments.
Stay patient, folks. Forecasts can change.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sat afternoon, min 13°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Very mild (max 19°C on Mon morning, min 11°C on Tue night). Winds increasing (calm on Mon morning, fresh winds from the S by Wed afternoon). | ||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
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) | SSE 10 | NE 8 | ENE 8 | NE 5 | ENE 9 | NE 5 | NE 6 | NE 7 | NE 6 | E 10 | E 10 | SE 11 | SSE 9 | SSE 8 | SSE 8 | SE 8 | SE 7 | SSE 8 | SSE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 33 | 20 | 39 | 19 | 17 | 49 | 46 | 28 | 14 | 8 | 8 | 31 | 417 | 560 | 459 | 93 | 43 | 345 | 888 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross-off | glassy | on | cross | cross | cross-on | cross-off | off | cross | cross-off |
High Tide | 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 | 6:45AM1.20m | 6:46PM1.65m | |||||||
Low Tide | 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 | 12:24PM0.27m | 1:23AM0.03m | |||||||
 |  | |  | | | | | | | | |  |  | | |  | |  | |
 | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 5 |
Temp °C | 16 | 19 | 18 | 16 | 29 | 30 | 21 | 21 | 18 | 16 | 19 | 17 | 16 | 16 | 16 | 14 | 19 | 16 | 15 |
Feels °C | 12 | 16 | 14 | 14 | 25 | 25 | 18 | 17 | 14 | 15 | 17 | 14 | 14 | 12 | 14 | 12 | 15 | 11 | 8 |
Swell 1 Height (m) Direction Period (s) | NE 7 | S 11 | S 8 | S 7 | S 9 | NE 5 | NE 6 | SSW 7 | S 9 | S 10 | S 8 | S 8 | ENE 10 | E 10 | SSE 8 | S 8 | S 8 | ENE 9 | S 16 |
| kJ | 25 | 498 | 112 | 51 | 85 | 49 | 46 | 79 | 153 | 610 | 217 | 169 | 10 | 9 | 459 | 110 | 132 | 8 | 20 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | NE 8 | ENE 10 | NE 5 | ENE 9 | S 9 | S 9 | NE 7 | NE 6 | NE 6 | E 10 | SE 11 | N 7 | NE 9 | ENE 10 | SE 8 | SE 7 | E 17 | ENE 9 |
| kJ | 33 | 20 | 18 | 19 | 17 | 60 | 43 | 28 | 14 | 6 | 8 | 31 | 1 | 3 | 9 | 93 | 43 | 6 | 8 |
Swell 3 Height (m) Direction Period (s) | ENE 9 | ENE 10 | S 18 | S 11 | S 16 | E 9 | E 11 | E 11 | E 10 | E 10 | NE 7 | E 10 | NE 8 | — | N 9 | E 10 | SE 10 | S 17 | E 16 |
| kJ | 17 | 19 | 26 | 89 | 19 | 7 | 9 | 9 | 9 | 8 | 2 | 8 | 3 | — | 2 | 8 | 15 | 6 | 5 |
Wind waves Height (m) Direction Period (s) | SW 5 | — | ENE 8 | — | NNE 3 | WNW 3 | SW 3 | SSW 7 | S 9 | — | — | ENE 3 | SSE 9 | SSE 8 | — | — | — | SSE 8 | SSE 9 |
| kJ | 37 | — | 39 | — | 10 | 4 | 2 | 134 | 269 | — | — | 3 | 417 | 560 | — | — | — | 345 | 888 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 2 | 65 | 2 | 5 | 2 | 3 | 3 | 597 | 2 | 2 | 170 | 45 | 123 | 7 | 0 | 0 | 132 | 260 |
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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