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: Sunday 16 Aug, 4PM (local time) - 4.5ft (1.4m), 7s period, SSE swell with 170 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 1.4m 7s and forecast to arrive on Sunday (Aug 16) at 4PM. Winds are predicted to be onshore 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 | 4PM (Sun 16th Aug) | 4.5ft (1.4m) 7s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down this 16-day stretch for the coast. To be straight with you, it's a tough outlook. We're looking at a long stretch of small, weak surf, with only a few brief windows of clean, rideable waves. The real size shows up late in the month, but the wind will be against us.
First up, the water is running a bit colder than normal, at 62°, which is a couple of degrees cooler than the long-term average. You'll want the full suit.
The opening days are a complete bust. Sunday the 16th is a right-off with onshore winds and a weak 5ft SE swell. The energy is weak at 157. Monday the 17th and Tuesday the 18th are better, but that's not saying much. We get some glassy mornings with a small 3ft ESE swell, but the period is short and the energy is weak, down in the 80s and 90s. It's surfable, but you'll be scratching for anything. The afternoons are messy with cross-onshore winds.
Wednesday the 19th is a repeat: a glassy morning with a small 3ft ESE swell, but still weak. The wind goes offshore from the NW on Friday the 21st, which is a good sign, but the swell has dropped to around 3ft and the energy is weak. It stays clean but tiny through the weekend, with the swell fading to almost nothing. By Sunday the 23rd and Monday the 24th, we're in ankle-slashers of 1ft. This creates a solid 10-day gap where the surf is just not worth your time.
The reason for this flat spell is a mix of small, short-period swell and a lot of onshore wind. The only real pulse in the middle of this comes on Wednesday the 26th. The swell kicks up to 6ft from the SSE, and the energy jumps to 516, a moderate pulse. But the wind is cross-onshore and it’s choppy, so the quality will be poor. It's a messy, powerful session, not a clean one. Thursday the 27th has a similar story with a 4ft SSE swell and a longer 11-second period, but the wind is still on it. There's a lot of water moving, but it'll be lumpy and hard work.
The final days of the month are more of the same: small, weak, and junky. There is a little bump from the SSE on the 29th, but the wind is wrong.
So, what's the pick of the litter? Honestly, the best option is the glassy windows on the mornings of the 17th and 18th. The waves are tiny, but the conditions are clean. You might find a few fun ones on the banks at Narrabeen-Alley Rights if you're in the right spot. It’s not a standout, but it's the best of a bad bunch. The bigger swell on the 26th is the only time we see any real size, but the wind ruins the quality. That day is one for the experienced chargers only. For everyone else, this is a week to catch up on other things.
With the onshore winds and small swells, this stretch might actually be better for the kite surfers than us. The swell directions are all over the place, so the banks will be inconsistent. It's a waiting game, for sure. The break is usually pretty consistent, so this kind of blank run is more of an anomaly, and forecasts can change. But right now, it's a lean period.
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 | |||||||||||||||||||||
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 |
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 |
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 |
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 | — |
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.











