Surf Forecasts:
Avalon-South surf forecast from 13 Jul 2026:
- Best quality surf: Tuesday 21 Jul, 1AM (local time) - 5ft (1.5m), 10s period, ENE swell with glassy winds.
- Most powerful swell: Sunday 19 Jul, 10AM (local time) - 6ft (1.8m), 10s period, E swell with 618 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 1AM (local time) - 5ft (1.5m), 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 Tuesday (Jul 21) at 1AM. The primary swell is predicted to be 1.5m 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 1.8m 10s and forecast to arrive on Sunday (Jul 19) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 11s period and expected on Wednesday (Jul 15) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Tue 21st Jul) | 5ft (1.5m) 10s |
| Best Surf | 1AM (Tue 21st Jul) | 5ft (1.5m) 10s |
| Most Powerful | 10AM (Sun 19th Jul) | 6ft (1.8m) 10s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, let’s switch it up for the imperial crew. I’m Rusty, and here’s the same deal, but in feet and Fahrenheit.
Right, the start is a proper dead zone. From Tuesday the 14th through Saturday the 18th, there’s absolutely nothing. The combined wave energy is zero (0), and the wind is all over the place with onshore junk. Leave the board in the shed.
First sign of a pulse is Sunday the 19th at Avalon-South. The morning brings a 6ft swell from the east, with a 10-second period – that’s groundswell, so it’s got some heft. The combined energy is a moderate 618. The wind is light cross-shore, but the surf is still a bit dodgy with the tide. It’s a marginal call, not a standout. Water temp is about average for the season.
Monday the 20th is similar: 6ft from the east-northeast (energy 596), but the wind is light onshore, ruining the shape. Skip it.
Now, the real gem. Tuesday the 21st is the best of the whole forecast. The morning is clean, with a 5ft swell from the east-northeast, 10-second period, and light offshore wind from the west. The combined energy hits 406. This is your session. The spot is fairly consistent, fairly exposed, and the swell direction matches the optimum. It’s beginner-friendly, but expect company – crowds are often. The offshore wind makes it glassy and perfect. Mark it.
Wednesday the 22nd and Thursday the 23rd keep the vibes going. Wednesday morning gives you 5ft from the east-northeast, with light cross-offshore wind and clean conditions (energy 399). Thursday morning brings another 5ft from the east, same light wind, and energy 459. Both solid options, but not as crisp as Tuesday.
After that, the wave size drops. Friday the 24th holds 4ft from the east (energy 333), clean in the morning, then fades. Saturday the 25th and Sunday the 26th are small, under 4ft, with low energy and only ordinary conditions. The second week is weak – Monday the 27th through Wednesday the 29th sees smaller swell, rising winds, and poor surf. Don’t plan around it.
So, bottom line: first five days are a bust. The standout is Tuesday the 21st morning. That’s your best bet. After that, it’s a slow fizzle.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Very mild (max 19°C on Tue morning, min 11°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Thu night. Very mild (max 16°C on Thu night, min 15°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Mon 20 | |||||||||||||||
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) | N 4 | S 20 | S 12 | E 10 | S 10 | S 10 | S 8 | S 8 | S 8 | ESE 5 | ESE 5 | SSE 6 | E 6 | ESE 6 | ESE 7 | E 9 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 29 | 29 | 74 | 86 | 125 | 156 | 371 | 618 | 550 | 586 | 573 | 482 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross-on | on | on | on |
High Tide | 8:04AM1.13m | 8:04PM1.84m | 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 | ||||||||
Low Tide | 2:06AM-0.02m | 1:30PM0.24m | 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 | ||||||||
 |  | | | | |  |  |  |  | | |  |  | | | | | | | | |
 | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — |
 | — | — | 5:02 | — | — | 5:02 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — | — | 5:06 | — | — | 5:07 |
mm | — | — | — | — | — | — | — | — | 1 | 5 | 2 | 2 | 1 | — | 2 | — | — | 1 | — | — | — |
Temp °C | 12 | 19 | 19 | 14 | 15 | 15 | 14 | 16 | 16 | 16 | 15 | 16 | 16 | 15 | 16 | 16 | 16 | 16 | 16 | 17 | 16 |
Feels °C | 7 | 15 | 14 | 11 | 9 | 11 | 10 | 10 | 11 | 13 | 13 | 14 | 14 | 12 | 14 | 13 | 12 | 13 | 13 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | N 4 | SSW 7 | S 12 | S 11 | — | S 17 | S 15 | S 15 | S 13 | S 7 | S 6 | S 8 | S 10 | S 10 | S 10 | S 9 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 |
| kJ | 3 | 5 | 25 | 20 | — | 5 | 5 | 18 | 14 | 188 | 63 | 34 | 156 | 92 | 66 | 61 | 618 | 550 | 586 | 573 | 482 |
Swell 2 Height (m) Direction Period (s) | S 7 | S 10 | S 7 | E 10 | — | — | — | — | S 17 | ESE 5 | ESE 5 | E 7 | S 23 | S 21 | S 20 | S 19 | S 9 | S 9 | S 13 | S 13 | S 12 |
| kJ | 4 | 2 | 4 | 2 | — | — | — | — | 24 | 29 | 29 | 26 | 10 | 35 | 8 | 65 | 40 | 25 | 92 | 117 | 102 |
Swell 3 Height (m) Direction Period (s) | SSW 4 | S 20 | — | — | — | — | — | — | — | S 12 | SSW 10 | S 11 | — | — | S 16 | SE 18 | S 18 | S 17 | S 8 | SSE 15 | SSE 15 |
| kJ | 2 | 8 | — | — | — | — | — | — | — | 25 | 31 | 22 | — | — | 5 | 12 | 98 | 92 | 12 | 23 | 21 |
Wind waves Height (m) Direction Period (s) | WNW 3 | NW 3 | WNW 3 | SSW 6 | S 10 | S 10 | S 8 | S 8 | S 8 | — | — | SSE 6 | E 6 | ESE 6 | ESE 7 | E 9 | — | — | — | — | — |
| kJ | 3 | 5 | 1 | 75 | 1403 | 1043 | 430 | 601 | 640 | — | — | 74 | 86 | 125 | 156 | 371 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 263 | 263 | 364 | 35 | 3 | 7 | 3 | 123 | 162 | 3 | 3 | 45 | 0 | 7 | 0 | 0 | 0 | 7 | 23 | 45 | 47 |
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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