Surf Forecasts:
Avalon-South surf forecast from 7 Aug 2026:
- Best quality surf: Sunday 9 Aug, 1AM (local time) - 2.5ft (0.7m), 8s period, ENE swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 7AM (local time) - 7ft (2.2m), 9s period, ENE swell with 732 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 1AM (local time) - 2.5ft (0.7m), 8s 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 Sunday (Aug 09) at 1AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.5m and 4s. 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 2.2m 9s and forecast to arrive on Monday (Aug 10) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 10s period and expected on Thursday (Aug 13) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 9th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 1AM (Sun 9th Aug) | 2.5ft (0.7m) 8s |
| Most Powerful | 7AM (Mon 10th Aug) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s talk about Avalon-South. I’ve been staring at the charts, and to be honest, we’re looking at a lot of flat days before anything really worth a paddle shows up.
The water temp is about 64°F, which is nothing special for this time of year.
Saturday the 8th is a bust. Tiny 2ft waves from the SSE, a west wind blowing offshore, and hardly any energy (63). The call is poor surf.
Sunday the 9th gets a little bump to about 3ft from the ENE, energy creeps up to 199, but a light north cross-shore wind puts a bit of chop on it. Still poor.
Monday the 10th sees the biggest swell of the early window at 7ft from the ENE, with very strong energy (723). But that’s paired with a 30 mph NW cross-off wind. For a wave that size, that’s messy. This setup looks more interesting for kite surfing than a real surf session.
Tuesday the 11th drops to 3ft, but the wind goes offshore from the WNW, making it clean. The energy is only moderate (103) and the comment says “surfable but ordinary.” It’s small but tidy.
From Wednesday the 12th all the way to Thursday the 21st, it’s a near-total drought. Swell barely gets above 2ft, energy readings are mostly weak (under 100), and the wind is all over the place. Almost two weeks of nothing.
Then, Saturday the 22nd of August. That’s the one. We get a nice 5ft of SSE swell, short period of 8 seconds, with 293 moderate energy. The wind is glassy – dead calm from the SSW. The commentary says expect good surf conditions. It’s clean, fun, and surfable for most. Crowds here are “often” a problem, so expect plenty of company in the lineup.
Sunday the 23rd drops off to a tiny 2ft, glassy again but forgettable.
Best bet: Saturday the 22nd of August. Get up early for glassy 5ft waves from the SSE. That’s the one.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Mon morning. Very mild (max 18°C on Sun morning, min 10°C on Sat night). Winds increasing (light winds from the W on Sat morning, fresh winds from the NW by Mon afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Tue morning, min 8°C on Thu night). Winds decreasing (fresh winds from the NW on Wed morning, light winds from the SSE by Thu afternoon). | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 9 | SSE 9 | ENE 8 | ENE 9 | ENE 9 | NE 7 | ENE 9 | NE 9 | NE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 45 | 30 | 67 | 156 | 203 | 540 | 723 | 456 | 194 | 103 | 70 | 43 | 64 | 74 | 54 | 32 | 20 | 10 | 10 | 10 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | cross-off | cross | cross | cross | cross-off | cross-off | off | off | off | cross-off | cross-off | off | off | cross-off | cross-on | off | off | on | off |
High Tide | 4:06PM1.51m | 4:57AM0.99m | 5:10PM1.60m | 6:04AM1.05m | 6:09PM1.69m | 7:00AM1.12m | 7:01PM1.76m | 7:49AM1.19m | 7:50PM1.78m | 8:34AM1.25m | 8:36PM1.75m | 9:17AM1.31m | 9:20PM1.66m | ||||||||
Low Tide | 11:05PM0.26m | 10:25AM0.37m | 00:08AM0.15m | 11:30AM0.33m | 1:02AM0.06m | 12:29PM0.27m | 1:50AM-0.01m | 1:22PM0.22m | 2:33AM-0.04m | 2:13PM0.19m | 3:13AM-0.02m | 3:02PM0.19m | 3:51AM0.02m | ||||||||
 | |  |  |  |  |  | | | | | | | | | | | | | | | |
 | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — |
 | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — |
mm | — | — | — | — | 2 | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 13 | 18 | 16 | 16 | 16 | 15 | 16 | 19 | 19 | 13 | 19 | 14 | 13 | 15 | 16 | 11 | 17 | 16 | 14 |
Feels °C | 13 | 12 | 10 | 14 | 13 | 10 | 8 | 6 | 10 | 14 | 13 | 10 | 13 | 6 | 5 | 10 | 12 | 7 | 14 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 7 | ENE 8 | ENE 9 | ENE 9 | E 14 | ENE 9 | NE 9 | NE 9 | ENE 9 | ENE 9 | S 12 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | S 12 | S 10 | S 10 | S 9 | S 8 |
| kJ | 58 | 39 | 67 | 156 | 203 | 15 | 723 | 456 | 194 | 103 | 70 | 99 | 64 | 74 | 54 | 32 | 1926 | 605 | 434 | 234 | 142 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | ENE 7 | S 7 | NE 5 | SSE 8 | SE 8 | S 13 | S 13 | E 13 | SSW 6 | SSW 8 | ENE 9 | S 8 | S 10 | SSW 8 | S 16 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 |
| kJ | 45 | 18 | 14 | 13 | 6 | 3 | 3 | 3 | 4 | 8 | 21 | 43 | 22 | 49 | 22 | 5 | 20 | 10 | 10 | 10 | 10 |
Swell 3 Height (m) Direction Period (s) | ENE 7 | SSE 9 | SSE 8 | S 6 | S 6 | S 13 | — | — | S 12 | S 12 | SSW 10 | NNE 7 | S 10 | N 4 | S 13 | — | — | — | S 18 | S 18 | S 15 |
| kJ | 18 | 30 | 14 | 6 | 2 | 3 | — | — | 3 | 3 | 20 | 5 | 8 | 5 | 3 | — | — | — | 6 | 6 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | NE 4 | NNE 4 | NNE 4 | NE 7 | NW 4 | NW 4 | WNW 4 | NW 3 | WNW 2 | NW 3 | NNW 4 | W 4 | W 5 | SSW 8 | — | WSW 4 | W 4 | — | WSW 3 |
| kJ | — | — | 6 | 30 | 24 | 540 | 42 | 58 | 19 | 2 | 1 | 5 | 21 | 12 | 71 | 477 | — | 18 | 4 | — | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 117 | 0 | 1 | 1 | 748 | 123 | 117 | 4 | 0 | 0 | 2 | 1 | 185 | 3 | 3 | 3 | 2 | 2 | 10 | 2 |
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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