Surf Forecasts:
Avalon-South surf forecast from 14 Jul 2026:
- Best quality surf: Monday 20 Jul, 4AM (local time) - 6.5ft (2.0m), 10s period, ENE swell with glassy winds.
- Most powerful swell: Sunday 19 Jul, 10AM (local time) - 7.5ft (2.3m), 10s period, ENE swell with 1,100 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 4AM (local time) - 6.5ft (2.0m), 10s 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 Monday (Jul 20) at 4AM. The primary swell is predicted to be 2.0m and 10s 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 2.3m 10s 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 3.0m 10s period and expected on Wednesday (Jul 15) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Mon 20th Jul) | 6.5ft (2.0m) 10s |
| Best Surf | 4AM (Mon 20th Jul) | 6.5ft (2.0m) 10s |
| Most Powerful | 10AM (Sun 19th Jul) | 7.5ft (2.3m) 10s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
We're starting off with a bit of a flat spell, I'm not gonna lie. The first few days are a write-off for any decent surf. Wednesday the 15th through to Saturday the 18th are just poor, with choppy cross-shore winds and barely any swell energy to speak of. You're better off staying home and cleaning the wax off your board.
Things finally start to look up around Sunday the 19th. The swell starts to build, but it's still a bit messy with a cross-onshore wind. By Monday morning the 20th, we get a nice pulse of ENE groundswell pushing in at about 6ft, with a period of 10 seconds—not the longest, but it's got some decent energy behind it (743). The wind goes glassy, and the conditions are looking very good. This is where it gets interesting. Avalon-South is a beginner-friendly spot, but with the swell size around 6ft, it might be pushing it for absolute beginners. The wind is offshore from the SSE, which is a good direction for this spot, so the waves will be clean and well-shaped. The crowd factor is "often," so you'll likely have company, but it's not a total zoo.
The rest of the week is a bit of a mixed bag. Tuesday the 21st still has some clean waves in the morning with a light offshore from the NW, but the swell drops to 5ft. Wednesday the 22nd and Thursday the 23rd mornings see the swell drop further to 4ft and 4ft, but with clean offshore winds, they're very surfable, just not the standout. The water temperature is about what you'd expect for this time of year, nothing unusual.
The second week looks a bit more inconsistent. There's a small window on Saturday the 25th morning with a glassy 3ft, but it's pretty weak. After that, we're back to small, weak swells with cross-shore winds. The last week of the month is mostly just small, clean waves in the 2ft to 3ft range, nothing to get too excited about.
The standout: Monday the 20th morning. That's the one to circle on the calendar. 6ft of ENE groundswell, glassy conditions, and clean surf. It's the best bet in the whole 16-day window.
Alright, signing off. Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Thu afternoon. Very mild (max 17°C on Fri morning, min 12°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Very mild (max 17°C on Sat morning, min 15°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | E 10 | S 10 | S 9 | S 7 | S 8 | S 7 | ESE 5 | ESE 5 | ESE 5 | E 6 | ESE 7 | E 7 | E 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 0 | 0 | 0 | 0 | 0 | 39 | 30 | 36 | 76 | 151 | 120 | 567 | 1100 | 969 | 889 | 734 | 650 | 689 | 442 | 433 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | cross-on | cross-off | cross-on |
High Tide | 8:56AM1.16m | 8:54PM1.83m | 9:45AM1.19m | 9:42PM1.77m | 10:33AM1.22m | 10:29PM1.65m | 11:21AM1.24m | 11:16PM1.49m | 12:10PM1.26m | 00:03AM1.32m | 12:59PM1.27m | 00:53AM1.15m | 1:51PM1.28m | ||||||||
Low Tide | 2:56AM-0.06m | 2:23PM0.23m | 3:43AM-0.06m | 3:16PM0.24m | 4:28AM-0.03m | 4:08PM0.28m | 5:11AM0.04m | 5:02PM0.34m | 5:51AM0.13m | 6:00PM0.41m | 6:31AM0.22m | 7:03PM0.47m | 7:11AM0.31m | ||||||||
 |  | |  |  | |  | | | |  |  |  | | | | | | | | | |
 | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — |
 | — | — | 5:02 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 |
mm | — | — | — | — | 1 | 3 | 5 | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 15 | 14 | 16 | 16 | 16 | 17 | 17 | 15 | 17 | 17 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 17 |
Feels °C | 10 | 8 | 9 | 9 | 10 | 11 | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 13 | 14 | 14 | 16 | 15 | 16 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | S 11 | — | — | S 15 | S 18 | S 18 | S 7 | S 6 | ESE 5 | S 10 | S 10 | E 7 | E 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 |
| kJ | 10 | — | — | 5 | 25 | 55 | 167 | 78 | 36 | 138 | 71 | 120 | 567 | 1100 | 969 | 889 | 734 | 650 | 689 | 442 | 433 |
Swell 2 Height (m) Direction Period (s) | S 10 | — | — | — | — | S 14 | S 18 | S 16 | S 8 | S 23 | S 21 | S 10 | S 10 | S 18 | S 16 | S 13 | S 12 | S 12 | S 11 | S 11 | S 10 |
| kJ | 8 | — | — | — | — | 15 | 25 | 19 | 82 | 10 | 34 | 66 | 44 | 97 | 85 | 119 | 106 | 100 | 58 | 36 | 31 |
Swell 3 Height (m) Direction Period (s) | E 10 | — | — | — | — | — | S 12 | E 7 | S 11 | S 18 | S 19 | S 19 | S 19 | S 9 | S 9 | SE 16 | SE 15 | SE 15 | SE 14 | SE 14 | SE 13 |
| kJ | 2 | — | — | — | — | — | 11 | 4 | 21 | 6 | 7 | 29 | 62 | 24 | 13 | 10 | 9 | 9 | 8 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | SSW 6 | S 10 | S 9 | S 7 | S 8 | S 7 | ESE 5 | ESE 5 | — | E 6 | ESE 7 | S 4 | — | — | — | — | — | — | NNE 3 | — | — |
| kJ | 55 | 1319 | 1210 | 447 | 620 | 578 | 39 | 30 | — | 76 | 151 | 13 | — | — | — | — | — | — | 3 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 90 | 7 | 7 | 170 | 81 | 3 | 3 | 3 | 0 | 96 | 132 | 23 | 50 | 7 | 23 | 0 | 29 | 1 | 0 | 1 |
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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