Surf Forecasts:
Avalon-South surf forecast from 18 Jul 2026:
- Best quality surf: Sunday 19 Jul, 10PM (local time) - 6.5ft (2.0m), 11s period, ENE swell with glassy winds.
- Most powerful swell: Sunday 19 Jul, 10AM (local time) - 7ft (2.2m), 11s period, ENE swell with 1,086 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 10PM (local time) - 6.5ft (2.0m), 11s 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 (Jul 19) at 10PM. The primary swell is predicted to be 2.0m and 11s 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 2.2m 11s and forecast to arrive on Sunday (Jul 19) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 9s period and expected on Friday (Jul 24) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 19th Jul) | 6.5ft (2.0m) 11s |
| Best Surf | 10PM (Sun 19th Jul) | 6.5ft (2.0m) 11s |
| Most Powerful | 10AM (Sun 19th Jul) | 7ft (2.2m) 11s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, let’s talk about what’s coming up in our local waters. Rusty here, and I’ll tell it like it is.
Don’t even think about paddling out this weekend. The surf is marginal with bumpy, cross-onshore wind and weak waves. The first real opportunity is Monday morning, July 20th. Avalon-South will have a clean 7ft swell from the ENE. The wind is glassy – dead calm – and that makes all the difference. Water temp is 65°, which is about normal for July. The combined swell energy is 934 (moderate to strong), and with a period of 11 seconds, these are proper groundswell waves with good shape. This is your standout for the whole first week.
Tuesday morning still has surfable 5ft ENE swell, but the wind goes cross-shore, losing that perfect clean feel. From Wednesday on, the swell drops fast. By Thursday, you’re looking at ankle-snappers, and the wind picks up. Not worth a session.
In the second week, things get interesting again. On Tuesday, July 28th, early morning, a very long-period groundswell from the SSE arrives with a 17-second period. The swell is only 4ft, but that period is pure energy. Combined energy is 898 (moderate), and the wind is a light offshore breeze. This will be clean and punchy, best at a point or reef break. The afternoon goes flat.
Thursday July 30th and Friday July 31st bring another SSE swell around 5ft with an 11-second period. The mornings are clean with light offshore winds, offering consistent, surfable waves. Not huge, but very user-friendly.
Then, mark your calendar for Monday August 3rd. Early morning, a solid 10ft SSE swell with a 13-second period hits. Combined energy is 3462 – that is strong to very strong. The wind is light offshore, creating excellent conditions. This is big, powerful surf for experienced surfers only. The afternoon drops to 8ft with a cross-onshore wind, so get it in the morning.
The best calls: Monday July 20th for clean, fun waves, and Monday August 3rd for a big, expert-only session. The mornings of July 30th and 31st offer clean, solid backup.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sun morning, min 11°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Wed morning, min 6°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
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) | ENE 11 | ENE 10 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1086 | 803 | 867 | 925 | 705 | 607 | 425 | 325 | 430 | 212 | 161 | 130 | 92 | 70 | 42 | 28 | 18 | 14 | 7 | 6 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | glassy | cross-on | cross-off | cross | cross-on | cross | off | glassy | off | off | cross-off | off | off | glassy | off | off | off | off |
High Tide | 12:10PM1.26m | 00:03AM1.32m | 12:59PM1.27m | 00:53AM1.15m | 1:51PM1.28m | 1:50AM1.02m | 2:46PM1.29m | 2:56AM0.92m | 3:41PM1.31m | 4:08AM0.88m | 4:36PM1.34m | 5:15AM0.88m | 5:26PM1.39m | ||||||||
Low Tide | 6:00PM0.41m | 6:31AM0.22m | 7:03PM0.47m | 7:11AM0.31m | 8:13PM0.51m | 7:54AM0.39m | 9:28PM0.51m | 8:43AM0.45m | 10:38PM0.48m | 9:37AM0.48m | 11:38PM0.43m | 10:34AM0.49m | 00:26AM0.37m | ||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 15 | 14 | 15 | 14 | 14 | 16 | 16 | 15 | 20 | 20 | 16 | 16 | 15 | 9 | 14 | 16 | 10 | 18 | 17 | 14 |
Feels °C | 14 | 13 | 14 | 14 | 12 | 13 | 14 | 14 | 13 | 17 | 18 | 13 | 9 | 8 | 2 | 10 | 13 | 4 | 13 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 10 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | S 10 | S 9 | S 9 | S 10 | S 10 | SSW 12 | S 13 | S 11 |
| kJ | 1086 | 803 | 867 | 925 | 705 | 607 | 425 | 325 | 430 | 212 | 161 | 130 | 92 | 89 | 430 | 440 | 384 | 127 | 550 | 1104 | 588 |
Swell 2 Height (m) Direction Period (s) | S 17 | S 16 | S 13 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 | ENE 9 | S 10 | ENE 8 | NE 8 | S 18 | S 18 | ENE 8 | ENE 8 |
| kJ | 211 | 176 | 160 | 184 | 134 | 84 | 56 | 32 | 31 | 17 | 20 | 8 | 2 | 70 | 168 | 28 | 18 | 54 | 225 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | SE 17 | SE 17 | SE 16 | SE 15 | SE 15 | SE 14 | S 16 | S 15 | S 14 | S 12 | — | — | — | E 8 | ENE 9 | — | S 22 | ENE 8 | ENE 8 | — | S 18 |
| kJ | 12 | 11 | 10 | 9 | 9 | 8 | 19 | 17 | 4 | 11 | — | — | — | 1 | 42 | — | 9 | 14 | 7 | — | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNE 3 | — | NE 4 | NE 5 | WNW 2 | — | WSW 3 | SW 6 | SSW 6 | S 10 | WNW 3 | NNW 3 | SW 5 | W 4 | WSW 4 | WSW 4 |
| kJ | — | — | — | — | — | 4 | — | 10 | 87 | 1 | — | 3 | 92 | 41 | 911 | 1 | 1 | 79 | 15 | 24 | 11 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 7 | 0 | 0 | 1 | 0 | 1 | 75 | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 2 | 3 | 2 | 3 | 3 |
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)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Avalon-South surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest