
Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 1AM (local time) - 3.5ft (1.1m), 7s period, SE swell with glassy winds.
- Most powerful swell: Monday 17 Aug, 1AM (local time) - 6.5ft (2.0m), 7s period, SE swell with 368 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 10AM (local time) - 1.5ft (0.5m), 10s period with ENE 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 12) at 10AM. The primary swell is predicted to be 0.5m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Narrabeen-Alley Rights in the next 16 days are 2.0m 7s and forecast to arrive on Monday (Aug 17) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 8s period and expected on Saturday (Aug 15) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Wed 12th Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 1AM (Wed 19th Aug) | 3.5ft (1.1m) 7s |
| Most Powerful | 1AM (Mon 17th Aug) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s have a look at what’s cooking for Narrabeen-Alley Rights (beach/sandbar). This spot’s a real solid performer when conditions line up, and we’ve got a bit of a mixed bag ahead. The water temp is sitting about average for this time of year, so nothing out of the ordinary there.
First up, Wednesday the 12th and Thursday the 13th are pretty small with swell around 2ft to 1ft from the ENE, period around 10 seconds. The combined energy (52) is weak, and while the wind is cross-offshore, it’s just not enough push to get excited about. We’ve got a real quiet spell from there through to the end of the third week of August – Friday the 14th through to Wednesday the 19th sees swell dropping to 1.0ft–1ft, and then a bit of a bump from Sunday the 16th with 5ft–6ft from the SSE then ESE, but the wind is all onshore or cross-onshore, and the period is short (6–8 seconds). The energy climbs to 184–389 (moderate), but the conditions are poor – choppy and messy. Not worth paddling out.
Then we hit a real promising window. Thursday the 20th of August starts with glassy conditions – dead calm wind – and 5ft swell from the ENE at 9 seconds, combined energy 416 (moderate). The morning looks clean and glassy, proper surfable. Friday the 21st morning has clean cross-offshore wind and 5ft ENE swell, energy 330 (moderate). But the real standout is Saturday the 22nd of August. That morning, we’ve got offshore wind from the NW at 6 mph, clean as a whistle, with 6ft ENE swell, period stretching to 11 seconds, and a combined energy of 698 (strong). The afternoon is similar with 6ft ENE swell, energy 893 (strong), and cross-offshore wind. This is the best of the whole run – clean, solid, and consistent. Sunday the 23rd also holds up nicely with 5ft–5ft ENE swell, period 11 seconds, and cross-offshore wind, energy 546–625 (strong). Keep in mind, with a longer period like 11 seconds, the sets will have good shape and energy, but there’ll be a bit more time between them – makes paddling out easier.
From Monday the 24th of August, the wind picks up and the quality drops – the swell is still around 4ft–6ft ENE, but the wind is cross-offshore and strong (16–19 mph), and the energy is moderate (367–554). The conditions are clean but the wind strength makes it less appealing. Tuesday the 25th has a bit of marginal quality, and by Wednesday the 26th the swell drops back to 3ft with weak energy (96). So that big Saturday is your best bet.
Because Narrabeen-Alley Rights is a beach/sandbar and can get crowded, especially on the good days, expect plenty of company on Saturday the 22nd and Sunday the 23rd. It’s a consistent spot, so you’ll get waves – just share ‘em.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Wed afternoon, min 10°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 19mm), heaviest on Fri night. Very mild (max 16°C on Sun night, min 13°C on Sat night). Winds increasing (light winds from the S on Fri night, fresh winds from the SSE by Sat night). | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 10 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | SSE 6 | SSE 7 | SE 7 | ESE 7 | ESE 7 | ESE 7 |
Wave Graph | |||||||||||||||||||
47 | 52 | 52 | 50 | 54 | 35 | 29 | 31 | 30 | 29 | 29 | 18 | 18 | 165 | 254 | 368 | 263 | 270 | 336 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | on | cross-off | cross-off | on | cross-on | cross-on | cross-on | cross | on | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 7:49AM1.19m | 7:50PM1.78m | 8:34AM1.25m | 8:36PM1.75m | 9:17AM1.31m | 9:20PM1.66m | 9:59AM1.34m | 10:02PM1.53m | 10:40AM1.36m | 10:44PM1.37m | 11:22AM1.36m | 11:27PM1.21m | |||||||
Low Tide | 1:50AM-0.01m | 1:22PM0.22m | 2:33AM-0.04m | 2:13PM0.19m | 3:13AM-0.02m | 3:02PM0.19m | 3:51AM0.02m | 3:50PM0.23m | 4:27AM0.10m | 4:40PM0.28m | 5:01AM0.19m | 5:31PM0.36m | |||||||
— | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | |
— | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | |
mm | — | — | — | — | — | — | — | — | — | 4 | 3 | — | 5 | — | 2 | 2 | 1 | 2 | 4 |
Temp °C | 14 | 16 | 19 | 13 | 17 | 16 | 14 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 15 | 15 |
Feels °C | 8 | 12 | 15 | 9 | 14 | 12 | 10 | 13 | 12 | 13 | 10 | 10 | 9 | 9 | 12 | 12 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | S 9 | S 8 | ENE 10 | S 9 | S 8 | S 9 | S 8 | S 7 | ENE 9 | ENE 10 | S 17 | S 16 | S 12 | S 11 | S 10 | S 9 | S 9 |
584 | 319 | 160 | 108 | 54 | 335 | 207 | 229 | 196 | 134 | 29 | 18 | 52 | 79 | 44 | 61 | 96 | 61 | 36 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 10 | ENE 10 | ENE 9 | S 11 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | S 16 | S 19 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 9 | S 14 | SSW 12 |
47 | 52 | 52 | 50 | 20 | 35 | 29 | 31 | 30 | 29 | 5 | 29 | 18 | 19 | 20 | 11 | 41 | 16 | 14 | |
Swell 3 Height (m) Direction Period (s) | — | S 15 | S 15 | S 13 | S 12 | — | S 15 | S 19 | S 16 | S 15 | S 20 | S 14 | — | S 13 | S 15 | S 17 | S 16 | S 14 | — |
— | 4 | 4 | 3 | 3 | — | 17 | 28 | 19 | 17 | 8 | 4 | — | 4 | 39 | 6 | 5 | 16 | — | |
Wind waves Height (m) Direction Period (s) | W 3 | WNW 3 | NNW 3 | W 4 | S 8 | S 9 | WSW 3 | — | — | — | S 8 | S 8 | SSE 7 | SSE 6 | SSE 7 | SE 7 | ESE 7 | ESE 7 | ESE 7 |
6 | 5 | 5 | 9 | 115 | 492 | 4 | — | — | — | 368 | 413 | 191 | 165 | 254 | 368 | 263 | 270 | 336 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 0 | 2 | 89 | 1 | 1 | 18 | 2 | 162 | 54 | 1 | 123 | 123 | 223 | 173 | 317 | 128 |
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.











