Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 16 Aug 2026:
- Best quality surf: Monday 17 Aug, 1AM (local time) - 3ft (0.9m), 6s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 3ft (0.9m), 9s period, ESE swell with 141 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 1AM (local time) - 3ft (0.9m), 6s 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 Monday (Aug 17) at 1AM. The primary swell is predicted to be 0.9m and 6s period. 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 0.9m 9s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 9s period and expected on Saturday (Aug 22) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 17th Aug) | 3ft (0.9m) 6s |
| Best Surf | 1AM (Mon 17th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 7PM (Wed 19th Aug) | 3ft (0.9m) 9s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
Right off the bat, it’s looking pretty flat and messy around here. We’ve got a long stretch ahead with nothing doing. The water’s sitting at 62°, which is a bit colder than usual for this time of year – you’ll want the hood and booties.
The first week and a bit is a write-off. From Sunday the 16th through to Friday the 28th, we’re looking at tiny, short-period slop with onshore or cross-shore breezes messing things up. Sure, there are moments of glass, like Wednesday the 19th morning with a clean 2ft, but it’s just not worth the paddle. The energy is weak, maxing out around 239 (moderate at best) but mostly sitting in that weak sub-100 range. It’s frustrating. There’s a stretch of about twelve days where you’re better off doing something else. The swell direction is mostly from the ESE, which is fine for Narrabeen-Alley Rights (that exposed beach/sandbar set-up), but the period is around 6-7 seconds and that’s just not enough to make it break with any sort of punch.
Then, finally, we get a glimmer. On Saturday the 29th of August, the morning is the one to circle. We’ve got a proper pulse of swell arriving – 7ft from the NE with a period of 8 seconds. The energy jumps right up to 733, which is strong. The wind is forecast to be glassy, which is about as good as it gets for this place. This is the standout. It’s not a monster, but after that long flat spell, a clean 7ft at Alley Rights with no wind is going to have some proper shape to it. It’s an advanced break, so be ready for a crowd – it’s often busy, especially when it’s been flat for a while. This is the one you want to be on. The size is getting up there, so it’s not for beginners, but for the crew who know the bank, it’s going to be good. The NE direction is right in the sweet spot for this break.
The Sunday the 30th morning after that still has some life, with 4ft from the NE and a clean cross-offshore wind, but the energy drops back to 229 (moderate). It’ll be okay, but not the same as the day before. After that, the swell fades back out to small, junky leftovers. So, the plan is simple: sit tight, wait for that Saturday morning, and go get some. It’s a long way off, so the forecast could change, but as it stands, that’s the one.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sun night. Very mild (max 16°C on Sun morning, min 13°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Warm (max 20°C on Thu morning, min 13°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | SE 6 | SSE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 11 | ESE 10 | E 6 | ESE 9 | ESE 6 | NE 4 | NE 6 | ENE 6 | ENE 6 | ENE 7 | SSW 5 | S 6 | NE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 152 | 170 | 55 | 70 | 73 | 78 | 88 | 82 | 98 | 80 | 81 | 99 | 55 | 27 | 100 | 42 | 33 | 53 | 32 | 66 | 22 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | cross-off | cross-on | cross-on | cross-on | cross-on | glassy | glassy | cross | off | cross-off | glassy | glassy | glassy | off | off | cross-off | cross-on | cross |
High Tide | 10:40AM1.36m | 10:44PM1.37m | 11:22AM1.36m | 11:27PM1.21m | 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 | ||||||||
Low Tide | 4:40PM0.28m | 5:01AM0.19m | 5:31PM0.36m | 5:36AM0.29m | 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 | ||||||||
 | |  |  | | | |  |  | | | | |  | |  | | | | |  | |
 | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — |
mm | — | — | 6 | 2 | — | 1 | 2 | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 14 | 15 | 15 | 15 | 16 | 16 | 15 | 16 | 16 | 16 | 20 | 18 | 16 | 17 | 18 | 16 | 15 | 14 | 13 |
Feels °C | 12 | 12 | 12 | 14 | 12 | 13 | 13 | 13 | 14 | 15 | 13 | 15 | 16 | 17 | 16 | 13 | 14 | 12 | 8 | 6 | 8 |
Swell 1 Height (m) Direction Period (s) | S 10 | SSE 7 | S 11 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | S 11 | ESE 8 | ESE 6 | E 6 | ESE 9 | ESE 6 | ESE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | S 8 |
| kJ | 65 | 170 | 182 | 70 | 73 | 78 | 88 | 55 | 77 | 72 | 81 | 99 | 55 | 27 | 68 | 42 | 33 | 53 | 29 | 29 | 266 |
Swell 2 Height (m) Direction Period (s) | S 17 | S 14 | ESE 6 | S 10 | S 9 | S 8 | S 11 | ESE 13 | ESE 11 | ESE 10 | ESE 9 | ENE 5 | E 11 | E 10 | S 12 | S 11 | S 11 | S 10 | SSE 9 | — | NE 7 |
| kJ | 148 | 36 | 55 | 113 | 99 | 50 | 82 | 70 | 98 | 80 | 69 | 17 | 2 | 2 | 3 | 10 | 9 | 8 | 8 | — | 22 |
Swell 3 Height (m) Direction Period (s) | ENE 10 | S 18 | SSE 7 | ENE 10 | ENE 9 | S 12 | ESE 11 | E 9 | S 10 | S 8 | S 9 | S 8 | — | S 14 | E 10 | E 10 | SE 7 | — | S 15 | — | S 16 |
| kJ | 20 | 57 | 25 | 10 | 16 | 24 | 11 | 7 | 46 | 19 | 14 | 11 | — | 4 | 2 | 2 | 2 | — | 5 | — | 5 |
Wind waves Height (m) Direction Period (s) | SE 6 | ESE 6 | — | — | — | — | — | ESE 7 | — | — | ENE 5 | NE 4 | — | NE 4 | NE 6 | NW 2 | NW 2 | WNW 3 | SSW 5 | S 6 | — |
| kJ | 152 | 69 | — | — | — | — | — | 82 | — | — | 19 | 19 | — | 21 | 100 | 1 | 2 | 3 | 32 | 66 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 87 | 2 | 0 | 0 | 291 | 1 | 21 | 38 | 0 | 0 | 169 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 95 | 114 | 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.
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