Surf Forecasts:
Avalon-South surf forecast from 11 Jul 2026:
- Best quality surf: Saturday 18 Jul, 1AM (local time) - 4ft (1.2m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Saturday 18 Jul, 7PM (local time) - 5ft (1.5m), 10s period, E swell with 415 kJ wave energy.
- Next surfable swell (1★+): Sunday 12 Jul, 7AM (local time) - 2.5ft (0.8m), 10s period with ESE 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 12) at 7AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.5m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Avalon-South in the next 16 days are 1.5m 10s and forecast to arrive on Saturday (Jul 18) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 11s period and expected on Wednesday (Jul 15) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sun 12th Jul) | 2.5ft (0.8m) 10s |
| Best Surf | 1AM (Sat 18th Jul) | 4ft (1.2m) 9s |
| Most Powerful | 7PM (Sat 18th Jul) | 5ft (1.5m) 10s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
Alright, this is Rusty again. We’re looking at the same stretch for Avalon-South, but in feet and miles per hour.
To start, it’s bone dry. Saturday the 11th has a little 3ft bump from the east-south-east, but the wind is cross-onshore and it’s messy. Not a chance. Sunday the 12th has cleaner wind but the swell is tiny – dropping from around 2ft to 2ft with weak energy. Nothing to bother with. There’s a dead stretch of several days with no decent waves at all.
Thursday the 16th throws up a short-period (7 seconds) south-easterly swell around 5ft, but the wind is cross-shore and it’s ugly. The surf quality is poor. Friday the 17th is similar – not worth the drive.
The real action starts the weekend after that. Saturday morning the 18th has a clean 4ft east swell (9 seconds, moderate energy) with light wind. A solid session. Sunday the 19th morning has a 7ft east swell with clean, light wind and strong energy – that’s good, but the afternoon gets choppy.
The best of the whole forecast is the next week. Monday the 20th afternoon: 7ft east swell, 11-second period, offshore wind, clean, and big energy. That’s a proper groundswell. Tuesday the 21st morning is heavy: 8ft from the east-north-east, 11-second period, light offshore breeze, and huge energy. This is for experts only, and it’ll be clean and powerful. The swell direction lines up perfectly with the optimal east-north-east, and the spot is fairly exposed.
Then Thursday the 23rd afternoon is glassy with 8ft from the east-south-east, a long 12-second period, and massive energy. A dream session for the experienced crew. The absolute standout is the morning of the 24th of July: 8ft from the south-south-east, a very long 13-second period, clean and light, with massive energy. That’s a big, clean groundswell – expect long lulls but excellent wave shape. The water temp is about 66°, which is standard for the season.
For the less experienced, there’s a window on the 25th with 5ft to 6ft, but the wind turns onshore. The end of the forecast falls off to small, weak surf.
So, the first week is a no-go, but the second week, especially the 20th through the 24th, is pumping. Circle the morning of the 24th – that’s the one to wait for. Long-range calls might wobble, but this one looks like a solid, powerful groundswell coming in. Be ready.
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Tue morning, min 10°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Tue afternoon, min 11°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sat 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 8 | SE 8 | E 8 | N 4 | S 16 | E 10 | S 10 | S 10 | S 9 | S 9 | SSE 7 | ESE 6 | E 8 | E 9 | E 9 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 217 | 180 | 86 | 52 | 16 | 7 | 3 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 245 | 31 | 72 | 152 | 239 | 274 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | off | off | off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 5:23PM1.62m | 6:07AM1.06m | 6:19PM1.72m | 7:08AM1.09m | 7:13PM1.80m | 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 | |||||||
Low Tide | 00:15AM0.16m | 11:38AM0.28m | 1:13AM0.05m | 12:36PM0.26m | 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 | ||||||||
 |  |  | |  | | | | | | | | | | | | | | | | | |
 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 |
 | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:02 | — | — | 5:02 | — | — | 5:04 | — | — | 5:05 | — | 5:05 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 13 | 16 | 14 | 11 | 18 | 18 | 13 | 19 | 18 | 13 | 15 | 14 | 14 | 15 | 16 | 15 | 16 | 16 | 15 | 15 |
Feels °C | 13 | 9 | 9 | 7 | 5 | 13 | 13 | 9 | 14 | 13 | 8 | 10 | 9 | 11 | 11 | 13 | 12 | 12 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SE 8 | ESE 10 | ESE 10 | ESE 10 | SW 6 | SSW 6 | SSW 11 | SSW 8 | SSW 7 | SSW 6 | S 11 | S 10 | — | — | S 9 | SSE 7 | S 7 | E 8 | E 9 | E 9 | E 9 |
| kJ | 132 | 180 | 86 | 52 | 9 | 14 | 25 | 12 | 5 | 8 | 62 | 369 | — | — | 613 | 245 | 82 | 72 | 152 | 239 | 274 |
Swell 2 Height (m) Direction Period (s) | ESE 11 | SSE 8 | SE 8 | SE 8 | ESE 9 | SSW 11 | SSW 6 | S 11 | N 4 | S 16 | E 10 | — | — | — | S 15 | S 13 | ESE 6 | S 7 | S 11 | S 21 | S 6 |
| kJ | 217 | 45 | 18 | 10 | 16 | 13 | 8 | 9 | 1 | 19 | 2 | — | — | — | 4 | 14 | 31 | 28 | 37 | 76 | 83 |
Swell 3 Height (m) Direction Period (s) | S 16 | S 15 | NE 4 | NE 5 | S 11 | ESE 8 | SE 8 | E 8 | S 10 | S 12 | E 10 | — | — | — | — | E 11 | S 12 | S 12 | S 17 | — | S 20 |
| kJ | 5 | 4 | 1 | 1 | 3 | 7 | 3 | 1 | 8 | 11 | 2 | — | — | — | — | 2 | 26 | 43 | 6 | — | 30 |
Wind waves Height (m) Direction Period (s) | — | NNW 3 | W 4 | WSW 4 | W 4 | WNW 4 | WNW 3 | NW 3 | NW 3 | SW 3 | SSW 5 | S 10 | S 10 | S 9 | S 8 | ESE 6 | — | S 5 | S 6 | S 5 | — |
| kJ | — | 9 | 27 | 22 | 14 | 8 | 2 | 3 | 9 | 2 | 64 | 552 | 1146 | 828 | 441 | 44 | — | 43 | 105 | 57 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1 | 0 | 4 | 123 | 162 | 56 | 195 | 263 | 195 | 3 | 3 | 7 | 2 | 3 | 7 | 4 | 7 | 45 | 0 | 0 |
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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