
Surf Forecasts:
Avalon-South surf forecast from 29 Jul 2026:
- Best quality surf: Sunday 2 Aug, 4AM (local time) - 6ft (1.8m), 13s period, SSE swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 10PM (local time) - 6ft (1.8m), 14s period, SSE swell with 1,230 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 10AM (local time) - 5ft (1.6m), 9s 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 Saturday (Aug 01) at 10AM. The primary swell is predicted to be 1.6m and 9s period with a secondary swell of 0.4m and 14s. 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 1.8m 14s and forecast to arrive on Saturday (Aug 01) at 10PM. 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 10s period and expected on Thursday (Jul 30) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 1st Aug) | 5ft (1.6m) 9s |
| Best Surf | 4AM (Sun 2nd Aug) | 6ft (1.8m) 13s |
| Most Powerful | 10PM (Sat 1st Aug) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Avalon-South over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s shaping up for Avalon-South. It’s a quiet start, so don’t get your hopes up for the first few days. There’s a bit of a wait before the ocean actually wakes up.
We’re looking at a slow beginning. The first few days are pretty flat or just offering tiny, weak waves. You’ll see nothing really worth paddling out for from Thursday the 30th of July through to Friday the 7th of August. There’s a solid gap of over a week where the surf is just poor or non-existent. It’s a frustrating start, but it can happen.
Then, finally, Saturday the 1st of August brings a change. The early morning has a clean 5ft swell from the SSE, with a light offshore breeze. The wave energy is moderate (493). It’s a decent little window for a beginner-friendly wave, but the crowds are often around here, so you won’t be alone. The water is 65°F, which is about average for this time of year, so nothing to write home about there.
The real standout, the one you’ve been waiting for, hits on Monday the 10th of August. The morning session is looking very good. We’ve got a 6ft swell from the SE, clean with a light cross-offshore wind. The combined energy is strong at 758. That’s a proper groundswell with a period of 11 seconds, meaning good shape and power. It’s a bit too big for beginners, but for the average surfer, this is the pick of the window.
The action keeps rolling through Tuesday the 11th and Wednesday the 12th of August. Tuesday morning offers a 7ft SE swell with clean offshore winds and strong energy (699). The period is short at 7 seconds, so it’ll be a bit lumpy and less powerful than the Monday, but still very surfable. Wednesday morning is the biggest of the run, with a 8ft SSE swell and clean offshore wind. The energy is strong (785). That’s getting into expert-only territory, so know your limits. The period is 8 seconds, so again, it’s a bit windswell-like.
By Thursday the 13th of August, the swell drops a touch to 5ft from the SSE, but the afternoon goes glassy. That’s a rare treat, clean, smooth, and still decent energy (465) for a good session.
After that, it fades out again into small stuff from Friday the 14th onwards.
So, to sum it up: the first week is a write-off. The second week is where it’s at. The best on offer is Monday the 10th of August, with that solid, clean SE groundswell. Tuesday and Wednesday are also strong, but watch the size on Wednesday. Get in the water for that Monday morning.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Fri morning, min 10°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Mon afternoon, min 9°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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) | E 13 | E 12 | S 10 | ENE 7 | ENE 7 | ENE 7 | SSE 9 | SSE 9 | SSE 13 | SSE 12 | SE 12 | SSE 12 | SE 11 | SE 11 | SE 10 | SE 10 | SSE 10 | E 13 | ENE 13 | ENE 13 | ENE 9 |
Wave Graph | |||||||||||||||||||||
4 | 3 | 0 | 4 | 4 | 5 | 442 | 351 | 1186 | 984 | 925 | 449 | 233 | 140 | 68 | 25 | 10 | 14 | 17 | 33 | 16 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | off | cross-off | cross | off | off | on | cross | cross | cross-on | cross-off | cross-off | cross-off | off | off | cross-off | off | off | on | off |
High Tide | 8:43PM1.58m | 9:23AM1.14m | 9:17PM1.56m | 9:59AM1.19m | 9:52PM1.51m | 10:37AM1.23m | 10:29PM1.43m | 11:17AM1.27m | 11:10PM1.33m | 12:02PM1.31m | 11:58PM1.22m | 12:53PM1.34m | 00:57AM1.10m | ||||||||
Low Tide | 2:17PM0.34m | 3:24AM0.14m | 2:56PM0.33m | 3:56AM0.13m | 3:37PM0.35m | 4:27AM0.13m | 4:20PM0.37m | 5:00AM0.15m | 5:09PM0.40m | 5:36AM0.19m | 6:05PM0.42m | 6:17AM0.25m | 7:11PM0.44m | ||||||||
6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | |
— | 5:13 | — | — | 5:14 | — | — | 5:15 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 13 | 15 | 14 | 14 | 15 | 15 | 15 | 16 | 17 | 15 | 19 | 21 | 14 | 17 | 16 | 11 | 17 | 16 | 13 |
Feels °C | 10 | 11 | 10 | 11 | 10 | 11 | 13 | 12 | 12 | 12 | 13 | 11 | 13 | 17 | 9 | 12 | 10 | 6 | 14 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 10 | S 10 | S 10 | S 9 | SSE 9 | SSE 9 | SSE 13 | SSE 12 | SE 12 | SSE 12 | SE 11 | SE 11 | SE 10 | SE 10 | S 7 | S 10 | S 10 | S 10 | S 10 |
680 | 407 | 955 | 612 | 646 | 556 | 442 | 351 | 1186 | 984 | 925 | 449 | 233 | 140 | 68 | 25 | 59 | 356 | 407 | 555 | 472 | |
Swell 2 Height (m) Direction Period (s) | ENE 6 | NE 6 | — | ENE 7 | ENE 7 | ENE 7 | SE 14 | SSE 14 | E 18 | NE 9 | S 21 | NE 5 | NE 5 | NE 5 | NNE 5 | ESE 7 | SSE 10 | E 13 | ENE 13 | ENE 13 | ENE 9 |
4 | 1 | — | 4 | 4 | 5 | 46 | 168 | 6 | 3 | 36 | 32 | 12 | 6 | 2 | 5 | 10 | 14 | 17 | 33 | 16 | |
Swell 3 Height (m) Direction Period (s) | E 13 | E 12 | — | E 13 | E 13 | E 13 | ENE 7 | NE 7 | — | E 17 | E 17 | S 21 | NE 8 | E 15 | E 15 | E 14 | ESE 7 | E 8 | E 8 | E 18 | E 12 |
3 | 3 | — | 3 | 3 | 3 | 5 | 2 | — | 6 | 6 | 35 | 2 | 5 | 4 | 16 | 5 | 5 | 1 | 6 | 11 | |
Wind waves Height (m) Direction Period (s) | S 10 | — | — | S 10 | — | — | — | — | NE 7 | — | NE 8 | NNE 5 | NW 2 | NW 3 | SW 5 | SW 6 | SSW 6 | W 4 | — | — | — |
1070 | — | — | 832 | — | — | — | — | 2 | — | 3 | 59 | 1 | 6 | 22 | 42 | 88 | 6 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 3 | 2 | 2 | 45 | 2 | 0 | 10 | 2 | 2 | 187 | 0 | 1 | 0 | 0 | 4 | 3 | 2 | 3 | 10 | 2 |
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.










