Surf Forecasts:
Avalon-South surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 10PM (local time) - 3ft (0.9m), 7s period, SSE swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 1AM (local time) - 3.5ft (1.1m), 9s period, SSE swell with 211 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 10PM (local time) - 3ft (0.9m), 7s 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 14) at 10PM. The primary swell is predicted to be 0.9m and 7s 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 1.1m 9s and forecast to arrive on Saturday (Aug 15) at 1AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 7s period and expected on Saturday (Aug 15) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 14th Aug) | 3ft (0.9m) 7s |
| Best Surf | 10PM (Fri 14th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 1AM (Sat 15th Aug) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break it down in feet and Fahrenheit.
Bottom line: Avalon-South is looking pretty quiet for the next couple of weeks. There’s a long stretch of tiny waves until Thursday the 19th of August, and even then nothing’s screaming “go”.
Thursday 13th & Friday 14th – Waves are only 1ft to 2ft from the ENE, weak and short-period. Water temp is 63°F, which is about normal for this time of year. The wind is mostly cross-onshore and messy.
Saturday 15th & Sunday 16th – Still small. Sunday morning bumps up to 5ft, but it’s short-period wind swell (6 seconds) and choppy with a cross-onshore wind. Combined energy hits 212 (moderate energy), but the quality’s poor.
Monday 17th & Tuesday 18th – Swell drops under 4ft, period stays short at 7 seconds. Light east winds but the waves are weak. Not worth it.
Wednesday 19th & Thursday 20th – A couple of mornings that are just surfable. Wednesday the 19th has 4ft from the ESE at 7 seconds, with a light offshore breeze from the WSW. Combined energy is 179 (moderate). Thursday the 20th morning offers 4ft with a light NNW cross-off wind. Clean, but ordinary.
Friday 21st through Monday 24th – Small stuff, mostly under 3ft. The best morning might be Sunday the 23rd with 3ft and a solid offshore wind from the west at 15-25 km/h, keeping it clean. Combined energy around 155-162 (moderate). Still small, but it’s your best bet if you’re keen.
Tuesday 25th to Friday 28th – Fading out to near nothing. The last few days are tiny with strong south winds and rain. Forget it.
The standout? There’s no real winner, but Sunday morning the 23rd of August is the cleanest of the lot with 3ft waves and a consistent offshore wind. That’s your call if you’re jonesing.
Keep an eye out, things might change.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sat morning. Very mild (max 16°C on Thu afternoon, min 10°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Tue night. Very mild (max 16°C on Tue morning, min 13°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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 9 | ENE 9 | ENE 10 | ENE 10 | SSE 9 | ENE 9 | ENE 10 | ENE 10 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 6 | SE 7 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 35 | 29 | 31 | 31 | 211 | 17 | 18 | 19 | 120 | 106 | 132 | 121 | 96 | 136 | 65 | 57 | 132 | 77 | 93 | 88 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | off | cross-on | glassy | cross | cross | cross-off | cross-on | cross-on | on | on | on | on | cross-on | cross-on | glassy | on | on | off |
High Tide | 8:36PM1.75m | 9:17AM1.31m | 9:20PM1.66m | 9:59AM1.34m | 10:02PM1.53m | 10:40AM1.36m | 10:44PM1.37m | 11:22AM1.36m | 11:27PM1.21m | 12:05PM1.34m | 00:13AM1.06m | 12:54PM1.30m | 1:08AM0.94m | |||||||
Low Tide | 3:13AM-0.02m | 3:02PM0.19m | 3:51AM0.02m | 3:50PM0.23m | 4:27AM0.10m | 4:40PM0.28m | 5:01AM0.19m | 5:31PM0.36m | 5:35AM0.29m | 6:27PM0.43m | 6:12AM0.38m | 7:32PM0.49m | ||||||||
 |  | | |  |  | | | |  | | | | | | | | | | | |
 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — |
 | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — |
mm | — | — | — | — | 3 | 3 | 2 | 4 | 2 | — | 3 | 2 | — | 1 | — | — | 3 | 1 | 2 | 1 |
Temp °C | 16 | 13 | 16 | 15 | 15 | 14 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 15 |
Feels °C | 12 | 9 | 13 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 8 | S 9 | S 8 | SSE 9 | S 9 | ENE 10 | S 7 | S 8 | ESE 6 | S 11 | ESE 7 | S 9 | S 8 | SE 7 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 |
| kJ | 436 | 224 | 245 | 142 | 211 | 220 | 18 | 181 | 72 | 106 | 185 | 121 | 80 | 35 | 65 | 57 | 132 | 77 | 93 | 88 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | S 18 | S 17 | S 18 | S 12 | S 18 | S 10 | SSW 12 | S 12 | E 6 | E 6 | ESE 11 | E 6 | ESE 9 | ENE 6 |
| kJ | 35 | 29 | 31 | 31 | 17 | 17 | 60 | 95 | 96 | 220 | 24 | 118 | 52 | 25 | 24 | 25 | 47 | 25 | 45 | 23 |
Swell 3 Height (m) Direction Period (s) | S 19 | S 16 | S 18 | S 15 | S 15 | S 19 | E 7 | ENE 10 | S 12 | S 18 | ENE 10 | SSW 13 | SSW 12 | ENE 9 | S 11 | S 11 | S 10 | ESE 10 | S 8 | — |
| kJ | 7 | 5 | 26 | 18 | 18 | 65 | 1 | 19 | 27 | 54 | 10 | 53 | 30 | 16 | 58 | 56 | 18 | 36 | 12 | — |
Wind waves Height (m) Direction Period (s) | — | WSW 3 | W 3 | — | — | — | S 8 | — | ESE 6 | — | ESE 6 | — | ESE 7 | ESE 6 | — | — | — | — | — | NE 6 |
| kJ | — | 7 | 1 | — | — | — | 294 | — | 120 | — | 132 | — | 96 | 136 | — | — | — | — | — | 20 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 7 | 2 | 2 | 45 | 2 | 3 | 45 | 3 | 132 | 7 | 96 | 96 | 203 | 11 | 45 | 45 | 0 | 0 | 83 |
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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