
Surf Forecasts:
Avalon-South surf forecast from 27 Jul 2026:
- Best quality surf: Saturday 1 Aug, 1PM (local time) - 4.5ft (1.3m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 10AM (local time) - 4.5ft (1.4m), 12s period, SSE swell with 598 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 10AM (local time) - 1.5ft (0.5m), 14s 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 Saturday (Aug 01) at 10AM. The primary swell is predicted to be 0.5m and 14s 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 1.4m 12s and forecast to arrive on Sunday (Aug 02) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 10s period and expected on Thursday (Jul 30) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 1st Aug) | 1.5ft (0.5m) 14s |
| Best Surf | 1PM (Sat 1st Aug) | 4.5ft (1.3m) 9s |
| Most Powerful | 10AM (Sun 2nd Aug) | 4.5ft (1.4m) 12s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s cookin’ for Avalon-South over the next couple of weeks.
Right off the bat, I gotta be straight with you – the first several days are a write-off. We’re looking at tiny, weak waves that won't even get you out of first gear. From the 27th of July all the way through the 31st, it’s pretty much flat with poor surf conditions. You’ll see a few ripples here and there, but nothing worth paddling out for. The combined energy is just a whisper, with values like 10 and 15 (weak energy) – not enough to push a sea-gull.
The first real glimmer of hope comes on Saturday, August 1st. The morning is still a bit ordinary with a weak 2ft swell from the SSE, but the afternoon is where it’s at. We get a jump to 4ft from the SSE, and the wind goes glassy. That’s a major positive. The water temp is sitting at 65°, which is about average for this time of year. The combined energy bumps up to 382 (moderate wave energy), so you’ll actually feel some push. This is the first standout of the period.
Sunday morning, August 2nd, is also looking sweet. The swell builds slightly to 5ft from the SSE, with a period of 12 seconds – that’s a nice groundswell. It’s got some grunt, with a combined energy of 609 (moderate wave energy). The morning wind is light and cross-offshore from the NNW, keeping things clean. This is a beauty of a window. The afternoon gets a bit choppy with a cross-onshore wind, so aim for the early session.
After that, the week of the 3rd to the 7th is a real mixed bag. The swell sticks around but the winds get messy. There’s a brief window on the morning of Wednesday, August 5th, with glassy conditions and a 6ft swell from the SSE, but the period is a short 6 seconds, so it’ll be a bit crumbly and soft. That size is still manageable for intermediates, but it's not the best shape.
Now, for the second week, things get a bit more serious. On Saturday, August 8th, the swell jumps up to 7ft from the SE with a period of 10 seconds. The combined energy is a strong 755 (moderate to strong wave energy). This is big, and the wind is a light cross-shore, so it’s an experts-only zone at that size. If you’re not confident, give it a wide berth. Sunday the 9th is similar, with 6ft from the SE, but the afternoon gets chopped up.
After that, the swell winds down fast. By Monday the 10th and Tuesday the 11th, we’re back to small, weak, and rainy. It’s another blank run to end the outlook.
So, to sum it up: your best bet is the Saturday afternoon (August 1st) and the Sunday morning (August 2nd). That’s the cleanest, most fun surf on offer. The bigger stuff later in the second week is for the experienced crew only.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Tue afternoon, min 8°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Sun morning, min 9°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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) | SE 14 | SE 8 | SE 7 | SE 7 | SE 7 | SE 6 | SE 13 | ENE 6 | ENE 6 | NE 6 | S 11 | ENE 7 | ENE 7 | ENE 7 | SSE 14 | SSE 9 | SSE 11 | SSE 12 | SSE 12 | SSE 11 |
Wave Graph | ||||||||||||||||||||
8 | 20 | 13 | 8 | 2 | 2 | 7 | 4 | 3 | 1 | 0 | 5 | 5 | 5 | 113 | 295 | 397 | 598 | 454 | 275 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-on | off | cross-off | cross | cross-off | cross-off | glassy | cross-off | cross-off | cross-on | cross-off |
High Tide | 6:53PM1.50m | 7:34AM1.01m | 7:32PM1.55m | 8:11AM1.05m | 8:08PM1.58m | 8:47AM1.10m | 8:43PM1.58m | 9:23AM1.14m | 9:17PM1.56m | 9:59AM1.19m | 9:52PM1.51m | 10:37AM1.23m | 10:29PM1.43m | |||||||
Low Tide | 1:44AM0.25m | 12:57PM0.39m | 2:19AM0.20m | 1:38PM0.36m | 2:53AM0.16m | 2:17PM0.34m | 3:24AM0.14m | 2:56PM0.33m | 3:56AM0.13m | 3:37PM0.35m | 4:27AM0.13m | 4:20PM0.37m | ||||||||
— | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | |
5:10 | — | — | 5:12 | — | — | 5:12 | — | — | 5:13 | — | — | 5:14 | — | — | 5:15 | — | — | 5:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 20 | 21 | 14 | 16 | 17 | 10 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 15 | 14 | 19 | 19 | 18 |
Feels °C | 13 | 13 | 16 | 18 | 10 | 10 | 10 | 4 | 9 | 9 | 11 | 10 | 11 | 11 | 11 | 14 | 12 | 16 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 9 | S 9 | S 8 | S 16 | S 12 | S 9 | S 9 | S 11 | S 10 | S 10 | S 10 | S 9 | SSE 9 | SSE 11 | SSE 12 | SSE 12 | SSE 11 |
143 | 65 | 28 | 24 | 13 | 5 | 5 | 66 | 389 | 349 | 984 | 590 | 654 | 541 | 287 | 295 | 397 | 598 | 454 | 275 | |
Swell 2 Height (m) Direction Period (s) | NE 7 | SE 8 | SE 7 | SE 7 | SE 7 | S 17 | SE 13 | ENE 6 | S 12 | S 12 | — | ENE 7 | ENE 7 | ENE 7 | SSE 14 | SSE 14 | SSE 14 | NE 6 | E 17 | SSE 14 |
2 | 20 | 13 | 7 | 2 | 23 | 7 | 4 | 110 | 347 | — | 5 | 5 | 5 | 113 | 82 | 220 | 6 | 6 | 140 | |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 16 | NE 4 | SE 15 | N 3 | SE 6 | SE 6 | S 13 | ENE 6 | NE 6 | — | E 13 | E 13 | E 13 | ENE 7 | ENE 7 | ENE 7 | NE 11 | E 11 | NE 4 |
8 | 10 | 2 | 8 | 1 | 2 | 2 | 3 | 3 | 1 | — | 3 | 3 | 3 | 5 | 5 | 4 | 5 | 2 | 9 | |
Wind waves Height (m) Direction Period (s) | — | NNE 4 | NW 2 | N 3 | W 3 | NW 3 | SW 4 | SSW 5 | S 9 | — | — | S 10 | — | — | — | — | — | — | ENE 3 | — |
— | 8 | 1 | 1 | 3 | 6 | 9 | 44 | 621 | — | — | 818 | — | — | — | — | — | — | 6 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 29 | 2 | 4 | 12 | 128 | 570 | 263 | 3 | 2 | 7 | 2 | 2 | 3 | 2 | 0 | 0 | 0 | 0 | 10 | 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.










