
Surf Forecasts:
Avalon-South surf forecast from 4 Aug 2026:
- Best quality surf: Friday 7 Aug, 7AM (local time) - 1.5ft (0.5m), 10s period, SSE swell with offshore winds.
- Most powerful swell: Monday 10 Aug, 1AM (local time) - 5ft (1.6m), 9s period, ENE swell with 395 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 7AM (local time) - 1.5ft (0.5m), 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 (Aug 07) at 7AM. The primary swell is predicted to be 0.5m and 10s period. 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 1.6m 9s and forecast to arrive on Monday (Aug 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 1.0m 8s period and expected on Thursday (Aug 06) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 7th Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 7AM (Fri 7th Aug) | 1.5ft (0.5m) 10s |
| Most Powerful | 1AM (Mon 10th Aug) | 5ft (1.6m) 9s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, let’s cut through the noise and get to what matters for the next couple weeks. The beginning is going to be a total bust, a real test of patience. We’re looking at a lot of tiny, weak surf and not much to get excited about.
Right around Wednesday the 5th, we have a glassy morning but with waves only about a foot high and weak energy (32). It’s just flat-out nothing. That vibe carries through the weekend. From Thursday the 6th through Monday the 10th, we see the swell meter move, but it’s all just knee-high slop. Mornings will be clean with offshore wind, but that’s a meaningless point when there’s no power. We’ll see a bump to about 4 feet on Sunday the 9th, but the period is short and the energy is weak. It’s not going to have any push. Monday the 10th sees a bit more size in the morning at 4 feet, but it’s still poor quality.
The middle of the week is more of the same. Tuesday the 11th and Wednesday the 12th offer up some 2-4 foot surf, but it's inconsistent and "ordinary" at best. The ocean is just going through the motions without any conviction. Then we drop right back down to 1-foot dribble for the rest of the week and into the next. Thursday the 13th through Saturday the 15th is a total write-off.
Now, here’s where it gets interesting. On Sunday the 16th, a new swell pushes in, but it’s ugly. We’re looking at 6 feet of short-period SSE windswell, with a lot of energy (around 400), but it’s riddled with rain and onshore winds. The period is a dismal 7 seconds, making it lumpy and unrideable in my book. This setup at Avalon-South is going to be a messy, powerful crumble. It’s too big for the groms and too messy for anyone else. Honestly, that’s a day for kiteboards, not surfboards.
But then, the tide turns. Monday the 17th is the first day we get a glimpse of something good. The rain clears, the wind goes glassy, and we have 4-5 foot waves of SE swell. The energy is building (276 to 398) and the period is a workable 8-9 seconds. It’s going to be clean and a whole lot of fun.
And the pick of the entire run is Tuesday the 18th in the morning. We’ve got 6 feet of swell, a 10-second period, and the energy readings are cranking at a strong 629. With a light offshore wind, it’s going to be the cleanest, strongest, and most lined-up the break has looked. This is the one day to circle on the calendar. The afternoon sees the wind switch onshore and turn it into slop, so you’ll want to be out there early.
After that, we fade into small leftovers for Wednesday and Thursday. So, the plan is simple: sit tight, wait out the flat spell, and be ready for Tuesday the 18th. That’s your day.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Wed afternoon, min 8°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Very mild (max 19°C on Sun morning, min 10°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the WNW by Sun night). | ||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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) | E 11 | E 10 | E 9 | E 10 | E 10 | E 12 | SE 10 | SSE 12 | SSE 9 | SSE 9 | SSE 9 | ENE 7 | E 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | NE 9 |
Wave Graph | |||||||||||||||||||
10 | 18 | 27 | 8 | 16 | 25 | 24 | 27 | 88 | 64 | 30 | 32 | 30 | 194 | 131 | 395 | 258 | 135 | 79 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | glassy | off | off | on | off | off | cross-on | off | off | cross-on | cross-off | cross | cross | cross-off | off | off | cross-off |
High Tide | 11:58PM1.22m | 12:53PM1.34m | 00:57AM1.10m | 1:52PM1.38m | 2:12AM1.01m | 2:58PM1.43m | 3:37AM0.97m | 4:06PM1.51m | 4:57AM0.99m | 5:10PM1.60m | 6:04AM1.05m | 6:09PM1.69m | |||||||
Low Tide | 6:17AM0.25m | 7:11PM0.44m | 7:06AM0.31m | 8:29PM0.42m | 8:06AM0.36m | 9:51PM0.36m | 9:15AM0.39m | 11:05PM0.26m | 10:25AM0.37m | 00:08AM0.15m | 11:30AM0.33m | 1:02AM0.06m | |||||||
— | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | |
— | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 12 | 16 | 18 | 12 | 15 | 15 | 13 | 16 | 15 | 14 | 16 | 15 | 14 | 19 | 19 | 19 | 16 | 16 | 11 |
Feels °C | 8 | 12 | 15 | 7 | 12 | 11 | 11 | 12 | 11 | 13 | 14 | 11 | 11 | 14 | 13 | 13 | 8 | 10 | 7 |
Swell 1 Height (m) Direction Period (s) | SSW 5 | E 10 | E 9 | S 10 | S 9 | S 8 | S 7 | S 9 | SSE 9 | S 9 | S 7 | S 7 | E 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | NE 9 |
20 | 18 | 27 | 17 | 106 | 132 | 37 | 106 | 88 | 74 | 53 | 38 | 30 | 194 | 131 | 395 | 258 | 135 | 79 | |
Swell 2 Height (m) Direction Period (s) | E 6 | E 13 | SSW 5 | E 10 | E 10 | E 12 | S 9 | SSE 12 | ENE 6 | SSE 9 | ENE 7 | ENE 7 | NE 7 | SSE 8 | SSE 8 | E 14 | S 8 | SW 4 | SSW 6 |
3 | 14 | 4 | 8 | 16 | 25 | 26 | 27 | 4 | 64 | 29 | 32 | 11 | 7 | 6 | 15 | 1 | 3 | 7 | |
Swell 3 Height (m) Direction Period (s) | E 11 | S 10 | S 11 | E 8 | NE 8 | ENE 8 | SE 10 | E 9 | E 8 | ENE 7 | SSE 9 | SSE 9 | SSE 8 | S 6 | E 15 | SE 10 | S 13 | E 13 | E 13 |
10 | 8 | 10 | 5 | 3 | 6 | 24 | 15 | 5 | 19 | 30 | 30 | 14 | 2 | 4 | 4 | 3 | 4 | 3 | |
Wind waves Height (m) Direction Period (s) | W 3 | SW 4 | — | SW 4 | W 3 | — | N 3 | WSW 3 | — | — | WSW 3 | — | NE 4 | NNE 5 | NE 5 | NNW 4 | WNW 4 | W 4 | WNW 3 |
2 | 14 | — | 15 | 2 | — | 3 | 3 | — | — | 1 | — | 22 | 47 | 42 | 29 | 16 | 4 | 4 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 128 | 12 | 7 | 4 | 2 | 48 | 2 | 2 | 7 | 0 | 2 | 117 | 0 | 1 | 11 | 11 | 193 | 0 | 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.











