Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 7AM (local time) - 2.5ft (0.7m), 10s period, ESE swell with cross-offshore 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★+): Tuesday 18 Aug, 1AM (local time) - 3.5ft (1.0m), 7s 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 Tuesday (Aug 18) at 1AM. The primary swell is predicted to be 1.0m and 7s 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 1.1m 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 1.2m 5s period and expected on Thursday (Aug 20) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Tue 18th Aug) | 3.5ft (1.0m) 7s |
| Best Surf | 7AM (Wed 19th Aug) | 2.5ft (0.7m) 10s |
| 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 on offer for Narrabeen-Alley Rights over the next couple of weeks.
Honestly, we’re looking at a pretty quiet stretch ahead. The surf for the next week is mostly tiny and wonky, with only a few flickers of something half-decent. The water temp is sitting around 63°, which is about average for this time of year. Not much to get excited about, so patience is the name of the game.
The first real standout, such as it is, comes on Wednesday morning, 19th August. Swell is a tiny 2ft from the ESE, but the period stretches out to 10 seconds, giving it a bit more shape than the junky 7-second stuff we’ve been seeing. The kicker here is the wind: it’s glassy – dead calm. That makes it clean as a whistle for a morning session on a log or a foamy. It’s a beach break setup exposed to the ENE, so a long-period groundswell can break a bit straight, but with that glass, it’s your best chance for a couple of fun ones. Don’t expect much power, the combined swell energy is weak at 151, but it’s about the only time the stars align.
From there, it’s a long, painful gap. Thursday the 20th and Friday the 21st offer tiny, weak waves (2ft and 2ft) with lighter offshore winds, making them clean but seriously lacking in push. We’re talking knee-high dribblers with combined energy down in the 44 to 66 range. Not proper surf.
We then hit a dry spell from the 22nd right through to the 25th of August. Swell drops to 1ft or 2ft and the winds get messy or offshore but on tiny, crumbly waves. Just a flat spell.
Things get a *little* more interesting on Wednesday the 26th, but the conditions are ugly. Swell pops up to 6ft from the ENE, with a combined energy of 198, so there’s some moderate push. But the period is short at 6 seconds, and we’ve got moderate cross-shore and cross-onshore winds. It’s going to be a lumpy, choppy mess – more of a kiteboarding setup than a paddle surfing one. Not recommended.
Thursday the 27th morning has the most significant swell of the whole run: 6ft from the NE, combined energy hitting a strong 593. The period is a short 7 seconds, and it’s still cross-shore with a slight chop. This is too big and messy for beginners, but for experts, it might offer a few bowls. Still, the wind isn’t doing us any favours.
The last flicker is Friday the 28th morning, with 3ft from the NE, an 8-second period, and clean offshore winds from the NNW. Combined energy is moderate at 132. It’s surfable, but very ordinary.
Honestly, if you’re desperate for a paddle, the glassy Wednesday the 19th morning is the one. For anything with more size, you’re waiting until the 26th or 27th, but the conditions are rough. The rest of the window is a washout.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Mon morning. Very mild (max 16°C on Mon morning, min 13°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Fri night. Warm (max 21°C on Thu morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 7 | ESE 7 | ESE 7 | ESE 8 | ESE 10 | ESE 10 | SE 9 | ESE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 9 | ENE 9 | ENE 8 |
Wave Graph | |||||||||||||||||||||
102 | 83 | 96 | 99 | 84 | 100 | 80 | 235 | 81 | 40 | 64 | 51 | 39 | 23 | 14 | 15 | 15 | 13 | 37 | 30 | 28 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | cross-on | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | off | cross-off | off | off | cross-off | on | glassy | cross-off | cross | off |
High Tide | 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 | 4:55AM0.88m | 4:58PM1.34m | ||||||||
Low Tide | 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 | 10:09AM0.54m | 11:58PM0.38m | ||||||||
6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | |
— | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | |
mm | 2 | — | 3 | 1 | — | — | — | — | — | — | — | — | — | 1 | 6 | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 21 | 20 | 20 | 17 | 15 | 14 | 17 | 16 | 16 | 18 | 17 | 17 |
Feels °C | 13 | 14 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 18 | 18 | 18 | 15 | 14 | 12 | 14 | 13 | 16 | 15 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | S 11 | ESE 7 | ESE 8 | SE 7 | ESE 10 | NE 5 | ESE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | S 8 | S 7 | S 10 |
102 | 83 | 96 | 82 | 84 | 92 | 51 | 235 | 50 | 40 | 64 | 51 | 39 | 23 | 14 | 15 | 15 | 13 | 51 | 25 | 51 | |
Swell 2 Height (m) Direction Period (s) | S 10 | S 9 | S 8 | E 9 | S 11 | ESE 11 | ESE 10 | S 8 | SE 9 | ENE 5 | E 11 | E 10 | SSW 4 | S 5 | S 5 | SE 4 | S 8 | S 7 | NE 9 | ENE 9 | ENE 8 |
113 | 76 | 49 | 6 | 56 | 100 | 80 | 11 | 81 | 17 | 2 | 2 | 4 | 13 | 8 | 1 | 6 | 9 | 37 | 30 | 28 | |
Swell 3 Height (m) Direction Period (s) | ENE 10 | SSW 13 | S 12 | SE 15 | ESE 14 | S 10 | E 5 | E 9 | S 8 | E 11 | S 14 | S 12 | S 11 | SE 7 | SE 7 | — | S 5 | ENE 8 | S 15 | S 12 | S 6 |
10 | 53 | 24 | 9 | 61 | 46 | 20 | 6 | 5 | 2 | 4 | 3 | 2 | 2 | 2 | — | 1 | 7 | 41 | 26 | 7 | |
Wind waves Height (m) Direction Period (s) | — | — | — | ESE 7 | ENE 5 | — | — | — | NNE 5 | NE 5 | NNE 4 | — | SW 4 | — | NNE 3 | — | — | — | — | N 3 | NW 2 |
— | — | — | 99 | 17 | — | — | — | 64 | 23 | 9 | — | 5 | — | 1 | — | — | — | — | 1 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 54 | 0 | 22 | 38 | 0 | 0 | 169 | 0 | 0 | 0 | 0 | 1 | 48 | 186 | 261 | 271 | 186 | 1 | 127 | 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.











