Avalon-South Surf Forecast and Surf Report

Lat Long: 33.64° S 151.34° E

Issued: 3 am 19 Aug 2026 (local time)

Forecast update in hr min

Today's Avalon-South sea temperature is

17.5° C

Avalon-South surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

Avalon-South surf forecast from 19 Aug 2026:

Best quality surf: Thursday 20 Aug, 10PM (local time) - 5ft (1.6m), 6s period, NE swell with cross-offshore winds.
Most powerful swell: Tuesday 25 Aug, 10AM (local time) - 6ft (1.8m), 7s period, NE swell with 321 kJ wave energy.
Next surfable swell (1★+): Thursday 20 Aug, 4AM (local time) - 2.5ft (0.7m), 9s period with SE 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 Thursday (Aug 20) at 4AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 1.0m and 6s. Another secondary swell of 1.1m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Avalon-South in the next 16 days are 1.8m 7s and forecast to arrive on Tuesday (Aug 25) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Wednesday (Aug 26) at 4AM.

Wave Type	Time (AEST) & Date	Wave Height & Period
Next good surf (1 star+)	4AM (Thu 20th Aug)	2.5ft (0.7m) 9s
Best Surf	10PM (Thu 20th Aug)	5ft (1.6m) 6s
Most Powerful	10AM (Tue 25th Aug)	6ft (1.8m) 7s

Table - best surf conditions forecast for Avalon-South over the next 16 days.

The Lowdown

Alright folks, Rusty here. Let’s see what’s on offer for the Avalon-South stretch over the next couple of weeks.

First things first, you’re going to need some patience. The first week or so is pretty grim. We’ve got a long stretch of small, weak swell and a lot of cross or onshore winds. The water temperature is sitting at 64°F, which is about average for this time of year, so nothing strange there.

The only real bright spot is a long way off, on Friday the 28th of August. That morning, we’ll see a clean 5ft SSE groundswell with a 9-second period, bumping up the combined energy to a solid 361 (moderate). The wind swings offshore from the west, keeping things clean. The afternoon looks even better: glassy conditions with the same 5ft SSE swell, energy hitting 384 (moderate). That’s the standout window for the whole forecast. For a beginner-friendly break like Avalon-South, this is about as good as it gets. The swell direction from the SSE is a bit off the optimum ENE, but the clean conditions and manageable size make it the call.

The Sunday the 30th of August morning sees a bigger 7ft SSE swell, but it’s lumpy with a cross-offshore wind. That’s pushing into the "too big for beginners" territory, and the quality looks marginal. The period is short at 8 seconds, so the waves will be a bit crumbly, not the clean lines you’d want.

Tuesday the 1st of September brings a promising 5ft SE swell with a long 12-second period, and the energy is strong at 728. But the wind is cross-onshore, which will mess up the surface. That long period makes it a groundswell, which is better for points or reefs, but here at a beach break, it might just be too straight.

Honestly, besides that Friday the 28th, the rest of the 16 days is a write-off. There are multi-day gaps with no decent surf. The consistency is low, and the wind is rarely your friend. If you’re a beginner, stick to that Friday window. If you’re more experienced, you might get a look on the 30th, but the wind will be a battle.

Rusty.

	Short Range Forecast Light rain (total 8mm), mostly falling on Fri night. Warm (max 21°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light.									Days 4-6 Weather Summary Some drizzle, heaviest during Mon night. Warm (max 23°C on Mon morning, min 13°C on Sun night). Wind will be generally light.
	Wednesday 19			Thursday 20			Friday 21			Saturday 22			Sunday 23			Monday 24			Tuesday 25
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	1	2	1	1	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 10	E 10	NE 6	NE 6	ENE 6	ENE 6	NE 6	NE 6	ENE 6	NE 6	NE 6	NE 6	ENE 6	ENE 9	NE 9	NE 8	ENE 7	NE 6	NE 7	NE 7	NE 8
Wave Graph
kJ	80	307	86	37	53	126	58	39	14	9	9	9	27	43	23	17	81	200	321	156	86
Wind (km/h)	NNE	NE	N	N	N	NW	NW	W	WNW	W	ESE	WSW	NE	NE	N	NNW	NW	NNW	NNW	NNW	SW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	glassy	cross-on	cross	cross	cross	cross-off	cross-off	off	off	off	on	glassy	glassy	cross-on	cross	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off
High Tide	12:54PM1.30m		1:08AM0.94m		1:50PM1.27m	2:20AM0.87m		2:55PM1.26m	3:43AM0.85m		4:00PM1.28m		4:55AM0.88m	4:58PM1.34m		5:47AM0.93m	5:46PM1.40m		6:30AM1.00m	6:27PM1.47m
Low Tide			7:32PM0.49m	6:55AM0.47m		8:48PM0.52m	7:50AM0.53m		10:06PM0.50m	9:00AM0.55m		11:10PM0.45m	10:09AM0.54m		11:58PM0.38m	11:07AM0.49m		00:37AM0.31m	11:56AM0.43m		1:12AM0.24m


	6:28	—	—	6:28	—	—	6:26	—	—	6:26	—	—	6:24	—	—	6:24	—	—	6:22	—	—
	—	5:27	—	—	5:28	—	—	5:28	—	—	5:29	—	—	5:30	—	—	5:30	—	—	5:30	—
mm	—	—	—	—	—	—	—	1	7	—	—	—	—	—	—	—	—	1	—	4	1
Temp °C	18	16	15	20	21	19	20	17	15	17	16	15	16	17	15	23	22	18	20	17	14
Feels °C	15	12	12	17	18	17	17	14	13	16	14	15	16	14	13	20	19	16	17	17	12
Swell 1 Height (m) Direction Period (s)	E 5	S 8	SE 9	NE 6	ESE 7	ENE 6	NE 6	NE 6	ENE 6	NE 6	NE 6	SSE 4	S 9	S 8	S 11	ENE 5	S 9	NE 6	NE 7	NE 7	NE 8
kJ	43	10	81	32	30	126	58	39	14	9	9	3	39	51	57	16	42	109	225	156	86
Swell 2 Height (m) Direction Period (s)	ESE 10	E 9	E 12	ESE 6	E 10	S 12	ESE 7	SE 7	S 10	SSW 5	S 4	S 9	SE 4	S 15	NE 9	S 9	S 16	S 9	S 9	S 9	S 10
kJ	80	6	3	37	2	3	5	2	2	5	3	13	4	40	20	41	19	28	27	13	7
Swell 3 Height (m) Direction Period (s)	SE 7	—	—	E 11	S 13	—	S 11	S 11	SE 7	S 9	S 9	NE 6	NE 6	E 14	E 14	NE 8	E 13	NE 9	S 14	S 14	S 12
kJ	44	—	—	2	4	—	2	2	2	2	13	9	10	4	4	17	3	21	16	4	3
Wind waves Height (m) Direction Period (s)	ENE 5	E 10	NE 6	NE 5	ENE 6	—	—	NW 2	NW 3	NNW 3	—	SE 4	ENE 6	ENE 9	NE 4	NW 2	ENE 7	NE 6	NE 7	NNW 4	SW 4
kJ	53	307	86	32	53	—	—	1	2	1	—	6	27	43	23	1	81	200	321	27	25
Nearest Offshore or Glassy	Avalon-North NSW - Sydney North Coast	Nambucca Heads NSW - Port Macquarie	Bilgola Beach NSW - Sydney North Coast	Bilgola Beach NSW - Sydney North Coast	Newport - The Peak NSW - Sydney North Coast	Avalon-North NSW - Sydney North Coast	Bilgola Beach NSW - Sydney North Coast	Curl Curl NSW - Sydney North Coast	North Haven NSW - Port Macquarie	North Haven NSW - Port Macquarie	Hat Head NSW - Port Macquarie	Marley NSW - Illawarra	Little Avalon NSW - Sydney North Coast	Hat Head NSW - Port Macquarie	Newport - The Peak NSW - Sydney North Coast	Newport - The Peak NSW - Sydney North Coast	Avalon-North NSW - Sydney North Coast	Avalon-North NSW - Sydney North Coast	Bilgola Beach NSW - Sydney North Coast	Avalon-North NSW - Sydney North Coast	Avalon-North NSW - Sydney North Coast
Rating (10 max)	1	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	1	1
Distance (km)	0	383	1	1	2	0	1	16	263	263	330	57	0	330	2	2	0	0	1	0	0
Best forecast wave conditions in Sydney North Coast	Winkipop		Bilgola Beach	Bilgola Beach	Turimetta Beach	Bilgola Beach	Bilgola Beach	Curl Curl					Turimetta Beach		Turimetta Beach	Butterbox	Bilgola Beach	Bilgola Beach	Bilgola Beach	Bilgola Beach	Winkipop
Rating (10 max)	2		1	1	1	1	1	1					1		1	1	1	2	2	1	1
Best forecast wave conditions in Australia	Shipstern Bluff TAS - East Coast	Luna Park VIC - Far West	Black Rock NSW - North Coast	Steep Point WA - North West	Snapper Rocks QLD - Gold Coast	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Cathedral Rock VIC - Cape Otway	Surfers Point WA - Margaret River	Cyclops WA - Far South	Bells Beach - Rincon VIC - Torquay	Ethel Wreck SA - Yorke Peninsula	Ethel Wreck SA - Yorke Peninsula	Quarantine VIC - Mornington Peninsula	Surfers Point WA - Margaret River	Bells Beach - Rincon VIC - Torquay	Bells Beach - Rincon VIC - Torquay	Cyclops WA - Far South	Boneyard NSW - Illawarra	Cyclops WA - Far South	Shipstern Bluff TAS - East Coast
Rating (10 max)	2	3	3	5	2	7	6	5	6	4	4	4	4	5	5	3	2	4	2	3	3
Header Global	Bali Village Indonesia	Balimbing Indonesia	Benkunqut Indonesia	Benkunqut Indonesia	Boneyards South Africa	Cobblestones Australia	Cobblestones Australia	Benkunqut Indonesia	Cow Bombie Australia	Asu Indonesia	Asu Indonesia	Asu Indonesia	Ntylonyane (Breezy Point) South Africa	Benkunqut Indonesia	Cobblestones Australia	Cobblestones Australia	Shingles New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Asu Indonesia	Kaifu Rivermouth Japan
Rating (10 max)	6	6	6	6	6	7	6	5	9	5	4	4	6	5	5	5	5	4	4	4	5

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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

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Quick surf report for Avalon-South:

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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.

Avalon-South Surf Forecast and Surf Report

Avalon-South surf forecast from 19 Aug 2026:

Best Forecast Surf Conditions for Avalon-South this week:

The Lowdown

Short Range Forecast

Days 4-6 Weather Summary

Latest Updates

Summer's Short. Life Is Long.

Roadsurfing in the Basque country

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

Summer School: The Timeline of The Boardshort

How Our WaveFinder Tool Makes Forecasting Easier Than Ever Before

Quick surf report for Avalon-South:

FREE! Surf-Forecast.com widget for your website

Information about the Avalon-South Surf forecast