Surf Forecasts:
Avalon-South surf forecast from 26 Aug 2026:
- Best quality surf: Friday 28 Aug, 7AM (local time) - 5ft (1.6m), 11s period, SSE swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 10AM (local time) - 5.5ft (1.7m), 11s period, SSE swell with 655 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 10PM (local time) - 2.5ft (0.7m), 9s period with ENE 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 (Aug 27) at 10PM. The primary swell is predicted to be 0.7m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Avalon-South in the next 16 days are 1.7m 11s and forecast to arrive on Friday (Aug 28) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 9s period and expected on Thursday (Aug 27) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 27th Aug) | 2.5ft (0.7m) 9s |
| Best Surf | 7AM (Fri 28th Aug) | 5ft (1.6m) 11s |
| Most Powerful | 10AM (Fri 28th Aug) | 5.5ft (1.7m) 11s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the table for the next 16 days. Right off the bat, I’ve gotta be straight with you: this is a grim stretch. For the first week or so, we’re looking at a real desert of surf. There’s a decent little pulse that shows up on Friday the 28th of August, but then it dries up again and we’re looking at a long, long gap of near-flat, messy conditions that stretches right through the middle of September. There’s a tiny flicker of life right at the very end of the forecast, but it’s nothing to get excited about. So, let’s break it down.
The only real standout is on Friday morning, August 28th at Avalon-South. The swell is hitting 6 ft from the SSE with a period of 11 seconds, and the combined energy is moderate at 699. The wind is a light 3 mph from the SW – that’s a clean cross-off breeze, which is gold. The water is 64°, which is just about bang on average for this time of year, so no surprises there. This is a solid option for beginners and intermediates – the size is manageable, the direction is lined up nicely, and the wind is your friend. It’s going to be a classic little morning session.
After that, it’s a long haul. The rest of the weekend and the entire following week offer nothing but tiny, poorly directed, or onshore junk. The combined energy readings drop into the double digits or low triple digits, with swell barely cracking 2 ft for days on end. There’s a brief window of glassy conditions on Sunday, August 30th, but the swell is only 2 ft from the SE, and the energy is just 116 – it’s small, ordinary, and barely worth paddling for. The gap from then until the end of the forecast is a real blank run. You’d be better off checking the forecast again in a few days, because this kind of flat spell can turn around.
So, to sum it up: Friday morning, August 28th is your one and only shot. Get it while you can. The rest is a washout.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed night. Very mild (max 17°C on Fri morning, min 11°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue morning, min 13°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SE 10 | ENE 9 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 11 | E 11 | E 10 |
Wave Graph | ||||||||||||||||||||
136 | 84 | 54 | 40 | 65 | 655 | 442 | 419 | 530 | 154 | 171 | 96 | 29 | 38 | 29 | 28 | 26 | 23 | 57 | 51 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-off | glassy | cross-on | cross | cross | cross-on | glassy | glassy | on | glassy | glassy | cross-on | cross | cross-off | off | cross-off |
High Tide | 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 | 10:41AM1.43m | 10:53PM1.25m | |||||||
Low Tide | 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 | 4:20AM0.17m | 4:56PM0.28m | ||||||||
— | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | |
5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | |
mm | — | 2 | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 14 | 15 | 15 | 14 | 17 | 15 | 15 | 15 | 15 | 14 | 17 | 16 | 14 | 17 | 16 | 15 | 25 | 25 | 20 |
Feels °C | 12 | 12 | 12 | 13 | 13 | 14 | 12 | 14 | 12 | 13 | 13 | 15 | 14 | 14 | 15 | 13 | 13 | 21 | 20 | 17 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | S 7 | S 9 | S 8 | S 9 | SSE 11 | SSE 10 | ENE 8 | SSE 10 | S 8 | S 8 | S 9 | S 9 | S 9 | S 8 | S 10 | S 10 | S 11 | S 11 | S 10 |
136 | 251 | 707 | 364 | 247 | 655 | 442 | 24 | 530 | 245 | 142 | 181 | 215 | 220 | 120 | 194 | 120 | 160 | 149 | 73 | |
Swell 2 Height (m) Direction Period (s) | S 11 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | S 11 | ENE 9 | SSE 10 | SSE 10 | SE 10 | ENE 9 | ENE 10 | S 15 | S 16 | S 15 | ENE 11 | E 11 | E 10 |
9 | 84 | 54 | 40 | 65 | 45 | 26 | 37 | 30 | 154 | 171 | 96 | 29 | 38 | 167 | 125 | 104 | 23 | 57 | 51 | |
Swell 3 Height (m) Direction Period (s) | — | S 15 | S 15 | S 14 | S 13 | S 14 | S 13 | — | — | ENE 9 | ENE 9 | ENE 9 | S 17 | S 16 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | N 12 | NE 5 |
— | 4 | 17 | 36 | 56 | 33 | 54 | — | — | 29 | 31 | 30 | 22 | 82 | 29 | 28 | 26 | 14 | 3 | 12 | |
Wind waves Height (m) Direction Period (s) | S 6 | — | — | — | — | — | — | SSE 10 | S 9 | — | — | — | — | — | — | — | NNE 3 | NNE 4 | NE 4 | NW 2 |
206 | — | — | — | — | — | — | 419 | 320 | — | — | — | — | — | — | — | 3 | 2 | 16 | 2 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 45 | 0 | 0 | 10 | 1 | 0 | 170 | 3 | 3 | 10 | 0 | 0 | 10 | 2 | 2 | 10 | 2 | 2 | 0 | 1 |
Best forecast wave conditions in Sydney North Coast | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











