Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 7AM (local time) - 2.5ft (0.7m), 10s period, ESE swell with glassy 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★+): Wednesday 19 Aug, 7AM (local time) - 2.5ft (0.7m), 10s period with ESE swell.
Best Forecast Surf Conditions for Narrabeen-Alley Rights this week:
The surf forecast for Narrabeen-Alley Rights over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 7AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.8m and 5s. Another secondary swell of 1.1m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Narrabeen-Alley Rights 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 1.1m 5s period and expected on Thursday (Aug 20) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 19th Aug) | 2.5ft (0.7m) 10s |
| Best Surf | 7AM (Wed 19th Aug) | 2.5ft (0.7m) 10s |
| Most Powerful | 10AM (Tue 25th Aug) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
G’day, I’m Rusty.
Let’s be straight with it – this 16-day window for Narrabeen-Alley Rights is a bit of a slow burn, but it does have a couple of moments that’ll get the heart rate up, especially if you’re patient. The first week is mostly small and ordinary, with a few glassy windows that’ll give you a fun little slide if you’re desperate, but nothing special. The real payoff looks likely on Thursday the 27th and Friday the 28th, when a better swell pushes through with clean conditions.
Alright, let’s start with Wednesday morning the 19th. It’s glassy, with a light NE breeze at 3 mph, and a small 2ft ESE swell creeping in with a 10-second period. The combined energy is moderate at 196 – it’s surfable, but very ordinary. That afternoon, the wind picks up to 12 mph from the NE, turning it cross-shore and choppy, making it pretty poor.
Thursday the 20th and Friday the 21st offer small, clean windows with light offshore or cross-off breezes, but the swell is tiny – 2ft to 3ft from the ESE and ENE, and the period is short at 6 seconds. The energy is weak, below 100. You can get a slide, but it’s a long paddle for not much reward. Saturday the 22nd through to Tuesday the 25th is mostly flat and poor, with swell barely pushing 1ft to 2ft. There’s a brief glassy window Monday afternoon the 24th with a 2ft ENE swell and a 9-second period, but the energy is only 61 – it’s a knee-high dribbler.
Now, keep your eyes on Thursday the 27th morning. The wind swings offshore from the NNW at 9 mph, and a 3ft ESE swell with a solid 8-second period rolls in. The combined energy jumps to a moderate 209, and the conditions are clean. That afternoon gets even better: the wind is light from the N at 6 mph, cross-off, and the swell bumps up to 5ft from the SE with an 8-second period, energy hitting 313. This is the best on offer for the period – expect good surf, clean, with some proper push. It’s an exposed beach/sandbar setup, and it gets crowded often, so be prepared to share the peak. The swell direction is from the SE, which is off the optimum ENE direction, but the quality and size still make it a standout.
Friday the 28th morning holds a 3ft SE swell, 9-second period, with a light W cross-off breeze, and energy at 162 – still surfable and clean. But that afternoon the wind howls from the SSW at 22 mph, turning it lumpy and poor.
From Saturday the 29th onward, things turn ugly. A massive 12ft SSE swell hits on Saturday with strong onshore winds at 28 mph, energy through the roof at 1994 – but it’s a washing machine. This is only for top-level experts, and even then, the wind is terrible. Sunday the 30th sees a 7ft SE swell with 25 mph onshore winds, still messy. The rest of the period into the first week of September is a write-off – small, onshore, and poor, with most days scoring zero.
So, to sum it up: the standout is Thursday the 27th, with that 5ft SE swell and clean cross-off wind in the afternoon. If you’ve got the patience, that’s your best shot. The surf is inconsistent here, but when it lines up, it’s worth the wait.
Stay frothy,
Rusty
Short Range ForecastLight rain (total 7mm), 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 SummarySome 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 | |
Swell Height Map | |||||||||||||||||||||
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 | |||||||||||||||||||||
80 | 307 | 86 | 37 | 53 | 126 | 58 | 39 | 14 | 9 | 9 | 9 | 27 | 43 | 23 | 17 | 81 | 200 | 321 | 156 | 86 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-on | glassy | glassy | cross | cross-off | cross-off | off | cross-off | cross-off | glassy | cross |
High Tide | 12:54PM1.30m | 1:09AM0.94m | 1:50PM1.27m | 2:20AM0.87m | 2:55PM1.26m | 3:43AM0.85m | 4:00PM1.28m | 4:55AM0.88m | 4:58PM1.34m | 5:48AM0.93m | 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 | ||||||||
6:30 | — | — | 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 | — | — | — | — | — | — | 1 | 5 | — | — | — | — | — | — | — | — | 1 | — | 5 | 1 |
Temp °C | 17 | 16 | 16 | 20 | 21 | 19 | 20 | 16 | 15 | 17 | 16 | 16 | 16 | 16 | 16 | 23 | 22 | 18 | 19 | 18 | 14 |
Feels °C | 14 | 12 | 13 | 17 | 18 | 17 | 17 | 12 | 12 | 16 | 14 | 16 | 13 | 12 | 14 | 20 | 19 | 16 | 16 | 18 | 11 |
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 |
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 |
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 |
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 |
53 | 307 | 86 | 32 | 53 | — | — | 1 | 2 | 1 | — | 6 | 27 | 43 | 23 | 1 | 81 | 200 | 321 | 27 | 25 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 392 | 0 | 0 | 0 | 0 | 0 | 1 | 261 | 378 | 338 | 170 | 2 | 323 | 1 | 1 | 0 | 0 | 0 | 2 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Narrabeen-Alley Rights Surf forecast
The above surf forecast table for Narrabeen-Alley Rights provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Narrabeen-Alley Rights can be found by selecting the local surf guide option on the grey menu. Our Narrabeen-Alley Rights 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 (Narrabeen-Alley Rights) 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 Narrabeen-Alley Rights 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.
Narrabeen-Alley Rights is 5 km (3 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.











