Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 1AM (local time) - 3ft (0.9m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 3.5ft (1.1m), 10s period, ESE swell with 235 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 1AM (local time) - 3ft (0.9m), 8s 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 1AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.6m and 11s. 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 1.1m 10s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be cross-shore 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+) | 1AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Best Surf | 1AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Most Powerful | 4PM (Wed 19th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ for the next couple of weeks.
Right off the bat, I gotta be straight with you: the next week and a half is a bit of a dud for Narrabeen-Alley Rights. Don’t get your hopes up. We’ve got a long stretch from Tuesday the 18th right through to Monday the 31st of August with nothing but tiny, weak, and ordinary surf. The combined swell energy is mostly in the low double digits or triple digits at best, but the height just isn’t there. A few mornings might look clean, but the waves are too small to bother with.
The one standout, and it’s a real tease, lands on Wednesday the 2nd of September. That morning, the swell jumps up to 6ft from the SE, with a period of 10 seconds. The combined energy is moderate at 675. The wind is light cross-onshore from the SSE, so there’ll be a few ripples on the surface. It’s not perfect, but it’s the best we’ll see. By the afternoon, the swell pushes even bigger to 8ft from the SSE with a period of 9 seconds, but the energy spikes to 2338. That’s a lot of power. That size is only for the experts; beginners will want to sit this one out.
The water temperature is sitting at 63°, which is about 1° cooler than the average for this time of year. Nothing to write home about temperature-wise.
So, to sum it up: the first week and a half is a write-off, with a solid but expert-only pulse arriving on the 2nd of September. The best window is Wednesday morning, the 2nd, if you’re comfortable in the bigger stuff.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue night. Warm (max 20°C on Thu morning, min 14°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Fri morning, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 7 | ESE 7 | ESE 8 | ESE 7 | ESE 10 | SE 9 | ESE 7 | NE 4 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | S 18 | NE 9 | NE 5 | ENE 8 | ENE 7 | ENE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 114 | 96 | 104 | 86 | 235 | 81 | 38 | 31 | 82 | 52 | 34 | 13 | 8 | 9 | 8 | 0 | 37 | 25 | 23 | 34 | 47 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 12:05PM1.34m | 00:14AM1.06m | 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 | ||||||||
Low Tide | 6:27PM0.43m | 6:12AM0.39m | 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 | ||||||||
 |  |  |  | |  | | | | | | | | |  | | | | | |  | |
 | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 |
Temp °C | 17 | 16 | 16 | 16 | 16 | 16 | 20 | 20 | 19 | 20 | 16 | 16 | 19 | 16 | 16 | 16 | 16 | 16 | 23 | 23 | 16 |
Feels °C | 14 | 13 | 14 | 13 | 12 | 14 | 16 | 17 | 18 | 18 | 12 | 13 | 16 | 13 | 16 | 16 | 13 | 14 | 19 | 21 | 15 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | ESE 8 | ESE 7 | ESE 10 | SE 9 | NE 5 | ESE 6 | ENE 6 | ENE 6 | ESE 7 | ENE 6 | NE 6 | NE 6 | NE 6 | S 5 | S 8 | NE 5 | S 10 | S 10 | ENE 6 |
| kJ | 82 | 56 | 104 | 86 | 235 | 81 | 30 | 31 | 82 | 52 | 5 | 13 | 8 | 9 | 8 | 4 | 35 | 25 | 69 | 69 | 47 |
Swell 2 Height (m) Direction Period (s) | E 9 | ESE 14 | ESE 11 | ESE 10 | S 8 | E 12 | ESE 7 | E 10 | S 12 | SE 7 | S 11 | SE 7 | S 5 | S 8 | S 4 | S 9 | S 15 | S 10 | NE 5 | ENE 7 | S 9 |
| kJ | 6 | 61 | 100 | 80 | 10 | 3 | 38 | 2 | 3 | 7 | 2 | 2 | 2 | 13 | 3 | 14 | 69 | 77 | 5 | 34 | 41 |
Swell 3 Height (m) Direction Period (s) | SE 15 | E 9 | S 10 | S 9 | E 9 | — | E 11 | S 13 | — | S 11 | — | S 10 | S 9 | S 4 | S 6 | S 18 | E 7 | NE 8 | ENE 8 | S 16 | ENE 9 |
| kJ | 9 | 7 | 46 | 23 | 6 | — | 2 | 4 | — | 2 | — | 2 | 6 | 1 | 3 | 55 | 1 | 17 | 23 | 21 | 9 |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 7 | — | — | — | NE 5 | — | NE 4 | — | — | ENE 6 | — | SSW 2 | — | — | — | NE 9 | NNE 5 | — | NE 3 | NNW 3 |
| kJ | 114 | 96 | — | — | — | 62 | — | 26 | — | — | 34 | — | 1 | — | — | — | 37 | 40 | — | 5 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 39 | 39 | 0 | 0 | 392 | 0 | 0 | 20 | 0 | 0 | 1 | 261 | 252 | 755 | 170 | 1 | 323 | 1 | 1 | 7 | 7 |
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.
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