
Surf Forecasts:
Avalon-North surf forecast from 12 Sep 2026:
- Best quality surf: Thursday 17 Sep, 10PM (local time) - 8ft (2.4m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 10PM (local time) - 8ft (2.4m), 9s period, SSE swell with 897 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 5ft (1.6m), 6s period with NE swell.
Best Forecast Surf Conditions for Avalon-North this week:
The surf forecast for Avalon-North over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 14) at 1AM. The primary swell is predicted to be 1.6m and 6s period with a secondary swell of 1.3m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Avalon-North in the next 16 days are 2.4m 9s and forecast to arrive on Thursday (Sep 17) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 10s period and expected on Wednesday (Sep 16) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 14th Sep) | 5ft (1.6m) 6s |
| Best Surf | 10PM (Thu 17th Sep) | 8ft (2.4m) 9s |
| Most Powerful | 10PM (Thu 17th Sep) | 8ft (2.4m) 9s |
Table - best surf conditions forecast for Avalon-North over the next 16 days.
The Lowdown
Alright, let’s get into it. This is Rusty.
Look, I’m not gonna sugarcoat it – the next week and a half is a real tough stretch for surf at Avalon-North. We’re seeing a pattern of onshore winds, choppy conditions, and meager swell. It’s going to be a serious test of patience. There’s a big gap with almost nothing rideable from now until around mid-week next week. We’re talking about days of poor surf from Sunday the 13th right through to Thursday the 17th, with only tiny, weak waves and mostly cross or onshore winds. A few mornings like Tuesday the 15th might show a clean face from a light offshore breeze, but the swell is tiny and weak, with combined energy only at 71. It’s just not worth paddling out for.
The first real glimmer of hope doesn’t come until Friday morning, September 18th. We get a glassy morning with the wind swinging light offshore from the NNW, and a bit of a pulse from the ESE. The swell will be around 3ft with a period of 8 seconds, and the combined energy bumps up to 121. It’s still not firing, but you can get a few clean, knee-to-waist high runners if you’re desperate. Saturday morning the 19th looks similar – glassy again, with a touch more period at 11 seconds, and energy at 208. It’ll be clean, but the swell is still modest. Not a standout, just a chance to wet the line.
Now, hold onto your board, because the real standout is shaping up for Saturday morning, September 26th. This is the one to circle on the calendar. We’ve got a clean, cross-off breeze from the NNW, and the swell jumps up to a solid 5ft from the NE. The combined energy rockets up to 420 – that’s moderate to strong energy, and the wave period is a punchy 7 seconds. This is when Avalon-North will actually start working. The swell direction is right in the optimum from the ENE, so the point should set up nicely. It’ll be a proper head-high, punchy wave. Just a heads up, though, at 5ft it might be a little much for total beginners, but for any intermediate and above, it’s game on. It’s a consistent break here, but keep an eye out because it can get crowded often. With a clean 5ft NE swell, the lineup is going to be busy.
Don’t get too excited about Sunday the 27th. That morning has clean conditions with a light SSW breeze, but the swell drops back to 4ft and the energy goes down to 194. It’s surfable, but nowhere near the quality of the Saturday before.
So, in summary: the next week is mostly a write-off. Wait for that Saturday the 26th. That’s your day. The water temp is about average for this time of year, so a 3/2 fullsuit will be perfect.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 11°C on Tue night). Winds increasing (light winds from the NNW on Sun night, fresh winds from the S by Tue night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Fri morning, min 9°C on Wed night). Winds decreasing (fresh winds from the S on Wed morning, light winds from the NW by Fri morning). | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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) | NE 5 | NE 5 | NE 6 | NE 6 | NE 5 | NE 6 | NE 6 | NE 7 | NE 7 | ENE 14 | S 10 | S 10 | E 13 | E 13 | ESE 8 | ESE 10 | SE 11 | ESE 11 | ESE 11 | SE 10 | SE 8 |
Wave Graph | |||||||||||||||||||||
30 | 56 | 207 | 54 | 66 | 177 | 61 | 46 | 18 | 20 | 0 | 0 | 7 | 3 | 175 | 409 | 476 | 418 | 238 | 108 | 35 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross | off | cross-off | cross-on | cross-off | off | cross-on | off |
High Tide | 9:35PM1.36m | 9:57AM1.47m | 10:15PM1.23m | 10:34AM1.44m | 10:56PM1.11m | 11:14AM1.39m | 11:41PM1.00m | 12:00PM1.32m | 00:37AM0.91m | 12:56PM1.26m | 1:51AM0.85m | 2:05PM1.23m | 3:17AM0.86m | ||||||||
Low Tide | 3:32PM0.18m | 3:40AM0.19m | 4:16PM0.23m | 4:11AM0.28m | 5:03PM0.30m | 4:43AM0.37m | 5:53PM0.38m | 5:19AM0.45m | 6:52PM0.45m | 6:03AM0.53m | 8:04PM0.49m | 7:05AM0.59m | 9:22PM0.48m | ||||||||
5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | 5:48 | — | — | |
— | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 17 | 23 | 22 | 21 | 21 | 17 | 13 | 13 | 14 | 14 | 15 | 14 | 13 | 19 | 18 | 16 | 25 | 24 | 20 |
Feels °C | 16 | 15 | 14 | 20 | 19 | 18 | 19 | 15 | 6 | 4 | 6 | 6 | 9 | 8 | 10 | 16 | 14 | 14 | 22 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | NE 6 | NE 6 | S 11 | NE 6 | NE 6 | NE 7 | NE 7 | ENE 14 | — | — | E 13 | E 13 | S 9 | ESE 10 | SE 11 | ESE 11 | ESE 11 | S 9 | S 9 |
181 | 181 | 145 | 54 | 81 | 128 | 61 | 46 | 15 | 20 | — | — | 3 | 3 | 516 | 409 | 476 | 418 | 238 | 110 | 104 | |
Swell 2 Height (m) Direction Period (s) | NE 5 | ENE 13 | S 12 | S 11 | ENE 13 | S 10 | S 10 | S 9 | ENE 13 | NE 7 | — | — | NE 13 | S 19 | ESE 8 | S 8 | S 9 | S 9 | S 9 | SE 10 | NE 5 |
20 | 17 | 175 | 123 | 16 | 48 | 29 | 14 | 18 | 2 | — | — | 7 | 7 | 175 | 234 | 251 | 287 | 130 | 108 | 22 | |
Swell 3 Height (m) Direction Period (s) | S 17 | ENE 13 | ENE 13 | ENE 13 | — | ENE 12 | NE 13 | ENE 13 | — | — | — | — | — | — | E 13 | S 18 | S 18 | S 16 | S 14 | S 14 | SE 8 |
49 | 17 | 17 | 17 | — | 15 | 6 | 17 | — | — | — | — | — | — | 3 | 6 | 24 | 132 | 102 | 103 | 35 | |
Wind waves Height (m) Direction Period (s) | NE 5 | NE 5 | NE 6 | — | NE 5 | NE 6 | SSW 3 | SSE 4 | S 8 | S 9 | S 10 | S 10 | S 10 | S 10 | — | — | — | — | — | ENE 3 | — |
30 | 56 | 207 | — | 66 | 177 | 1 | 14 | 1003 | 1526 | 3232 | 3461 | 2324 | 1729 | — | — | — | — | — | 3 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 10 | 198 | 0 | 1 | 11 | 0 | 0 | 132 | 90 | 824 | 743 | 204 | 7 | 123 | 0 | 0 | 65 | 0 | 0 | 47 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Avalon-North Surf forecast
The above surf forecast table for Avalon-North provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Avalon-North can be found by selecting the local surf guide option on the grey menu. Our Avalon-North 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-North) 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-North 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-North is 14 km (9 miles) from the city of 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.










