Surf Forecasts:
Avalon-South surf forecast from 6 Sep 2026:
- Best quality surf: Saturday 12 Sep, 4AM (local time) - 6ft (1.8m), 10s period, SSE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 1PM (local time) - 7.5ft (2.3m), 9s period, SSE swell with 755 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 1AM (local time) - 3ft (0.9m), 8s period with SE 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 Wednesday (Sep 09) at 1AM. The primary swell is predicted to be 0.9m 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 2.3m 9s and forecast to arrive on Tuesday (Sep 08) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 10s period and expected on Wednesday (Sep 09) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 9th Sep) | 3ft (0.9m) 8s |
| Best Surf | 4AM (Sat 12th Sep) | 6ft (1.8m) 10s |
| Most Powerful | 1PM (Tue 8th Sep) | 7.5ft (2.3m) 9s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let's be straight with you – this outlook for Avalon-South is a tough one to write. We're looking at a 16-day window starting now in early September, and honestly, there's nothing in the first week and a half that's worth getting wet for, except maybe a single, very marginal opportunity. You're best off leaving the board in the car or on the rack for a while.
Looking at the whole picture, we've got a long, flat spell with only a blip of something on Wednesday the 9th that's barely surfable. After that, the ocean seems to shut down almost completely until about Sunday the 20th. That's a big gap of over a week with zero recommendations.
Let's run through it. Monday the 7th offers a tiny 2 ft swell from the SSE, but the wave comment says "poor surf conditions" straight up. The combined energy is a weak 65, so there's just nothing pushing through. Even with the glassy wind from the NNW, the early call isn't worth paddling for.
The only time the forecasters even ticked a "1 out of 10" was for Wednesday morning, the 9th of September. That's your single, stand-out marginal chance. We've got a 5 ft swell from the SSE with a short 8-second period, giving a moderate combined energy of 279. The wind will be a clean cross-offshore from the SSW. It's barely hanging in there, and tide conditions are questionable. Don't expect much, but if you're desperate for a paddle, this is the only window in the entire outlook. After that, it's back to the doldrums.
From Thursday the 10th all the way through to Saturday the 19th, the swell drops to tiny 0.3 ft, 0.7 ft, 1.0 ft readings with weak energy values often under 50. The wind gets messy, with strong breezes and cross-shore chop. Sunday the 20th shows some offshore wind from the WNW, but with a swell of only 0.3 ft, there's nothing to ride.
So, that's the story. One look at Avalon-South on Wednesday the 9th, morning only, and then a long dry spell. Water temperature is about average for this time of year. For the rest of it, save the fuel.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Very mild (max 19°C on Mon morning, min 10°C on Tue night). Winds increasing (calm on Mon morning, strong winds from the S by Wed afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Fri morning, min 11°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | SSE 10 | SSE 9 | E 11 | E 10 | SSE 9 | SE 8 | SE 7 | ESE 13 | ESE 11 | ESE 10 | ESE 9 | ENE 15 | E 15 | ENE 14 | ENE 13 | ENE 14 | ENE 14 | SSE 10 | ENE 13 | SSE 9 | NNE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 60 | 396 | 9 | 9 | 616 | 96 | 64 | 34 | 47 | 38 | 17 | 21 | 4 | 18 | 18 | 19 | 19 | 335 | 17 | 147 | 95 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | on | cross-off | cross | cross-on | cross-off |
High Tide | 5:00PM1.55m | 5:57AM1.10m | 5:56PM1.61m | 6:45AM1.20m | 6:46PM1.65m | 7:28AM1.30m | 7:32PM1.63m | 8:07AM1.38m | 8:14PM1.58m | 8:45AM1.44m | 8:55PM1.48m | 9:21AM1.47m | 9:35PM1.36m | ||||||||
Low Tide | 10:24AM0.42m | 11:54PM0.14m | 11:28AM0.35m | 00:41AM0.07m | 12:24PM0.27m | 1:23AM0.03m | 1:14PM0.21m | 2:00AM0.03m | 2:02PM0.17m | 2:35AM0.06m | 2:47PM0.16m | 3:08AM0.11m | 3:32PM0.18m | 3:40AM0.19m | |||||||
 |  |  | | |  | |  |  | | | | | | | | | | | | | |
 | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — |
mm | — | — | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 17 | 15 | 16 | 16 | 13 | 16 | 14 | 14 | 14 | 14 | 14 | 16 | 15 | 14 | 15 | 15 | 14 | 19 | 18 | 16 |
Feels °C | 16 | 14 | 10 | 11 | 13 | 11 | 11 | 6 | 6 | 8 | 9 | 11 | 13 | 11 | 12 | 13 | 13 | 13 | 15 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | S 8 | SSE 9 | E 11 | E 10 | SSE 9 | S 9 | S 8 | ESE 13 | ESE 11 | ESE 10 | S 22 | ENE 15 | E 15 | S 9 | SSE 10 | S 11 | S 10 | SSE 10 | S 10 | SSE 9 | NE 5 |
| kJ | 245 | 396 | 9 | 9 | 616 | 306 | 136 | 34 | 47 | 38 | 150 | 21 | 4 | 775 | 710 | 790 | 562 | 335 | 221 | 147 | 52 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | E 10 | — | — | E 10 | SE 8 | SE 7 | ENE 9 | SSW 16 | S 23 | ESE 9 | E 18 | E 10 | ENE 14 | S 12 | S 19 | S 17 | ENE 13 | ENE 13 | ENE 13 | S 10 |
| kJ | 60 | 8 | — | — | 8 | 96 | 64 | 8 | 52 | 90 | 17 | 6 | 2 | 18 | 26 | 28 | 93 | 17 | 17 | 17 | 122 |
Swell 3 Height (m) Direction Period (s) | NNE 7 | E 10 | — | — | — | E 10 | E 9 | E 17 | NE 16 | E 16 | E 15 | — | S 21 | ENE 14 | ENE 13 | ENE 14 | ENE 14 | NNE 3 | S 19 | — | ENE 13 |
| kJ | 5 | 8 | — | — | — | 7 | 7 | 6 | 10 | 5 | 4 | — | 9 | 18 | 18 | 19 | 19 | 1 | 7 | — | 17 |
Wind waves Height (m) Direction Period (s) | — | NE 8 | S 8 | S 9 | — | — | WSW 2 | S 8 | S 10 | S 10 | S 10 | S 10 | S 10 | — | — | — | — | — | NNE 3 | NE 4 | NNE 6 |
| kJ | — | 3 | 1130 | 1099 | — | — | 1 | 1187 | 2849 | 1702 | 2229 | 1853 | 1170 | — | — | — | — | — | 2 | 27 | 95 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 10 | 123 | 123 | 3 | 0 | 0 | 330 | 96 | 7 | 203 | 2 | 3 | 90 | 2 | 3 | 10 | 0 | 10 | 137 | 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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