Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 17 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 (1.0m), 10s period, ESE swell with 175 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 1.0m 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 (1.0m) 10s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
Alright, Rusty here. Let's see what's happening at Narrabeen.
Honestly, the next couple of weeks are looking pretty quiet. The water's sitting around 63°F, which is about normal for this time of year, so no nasty surprises.
The first chance to get wet is Monday the 17th, but it's not pretty. We're looking at a 3ft ESE swell with a short period of 7 seconds, and weak combined energy (83). The wind is onshore, so expect some chop.
Tuesday the 18th is more of the same: small and crummy. The morning on Wednesday the 19th offers a glimmer. The swell drops to 2ft, but the period jumps to 10 seconds and the wind goes glassy calm. Combined energy is moderate (151), but with that tiny size, it's still just "surfable waves but very ordinary conditions". The window closes that afternoon as the wind swings onshore.
The best bet in the first week is Thursday morning the 20th. We've got 2ft from the NE with weak energy (75), but a light offshore from the NNW keeps it clean. It's not going to blow anyone's mind, but for a grovel session, this is the pick.
From Friday the 21st onward, it's a long, flat spell. The swell stays tiny—mostly under 2ft—and the energy readings are all in the weak two-digit range. A few glassy mornings pop up, like Friday afternoon and Wednesday the 26th, but there's just no push in the water.
The only other potential window is Thursday morning the 27th of August. A moderate offshore wind from the WNW at 12 mph will keep it clean, with a 2ft ENE swell. Energy is still weak (77). It's a long way off, so don't count on it, but it's worth a look.
So, bottom line: a lot of small, wind-affected days. The standout is Thursday the 20th morning for the clean conditions, but it's marginal. Beginners will be fine with the small size, but the quality is poor. For experts, there's nothing that gets the blood pumping. Honestly, with the consistent wind, this stretch looks like it's more for the kite surfers than the paddle surfers.
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 SummaryLight rain (total 5mm), mostly falling on Fri afternoon. Very mild (max 19°C on Fri morning, min 13°C on Sun 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 10 | ESE 10 | SE 9 | ESE 8 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | NE 6 | SE 5 | SSE 8 | NE 8 | ENE 8 | ENE 9 | ENE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 114 | 96 | 104 | 80 | 175 | 81 | 58 | 68 | 64 | 57 | 33 | 16 | 9 | 18 | 9 | 25 | 94 | 16 | 33 | 67 | 30 |
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 | cross-off | cross | off | off | cross-off | on | glassy | glassy | cross | cross-off | off | cross-on | cross-on |
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 | — | — | — | — | — | — | — | 2 | 2 | — | — | 1 | — | — | — | — | — | 5 |
Temp °C | 16 | 16 | 16 | 17 | 16 | 16 | 20 | 20 | 19 | 19 | 17 | 15 | 18 | 16 | 16 | 16 | 16 | 16 | 20 | 18 | 16 |
Feels °C | 13 | 13 | 14 | 15 | 12 | 14 | 17 | 17 | 16 | 17 | 16 | 13 | 17 | 13 | 16 | 15 | 13 | 15 | 18 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | S 11 | ESE 7 | ESE 8 | ESE 10 | ESE 10 | SE 9 | ENE 5 | E 6 | ENE 6 | ENE 6 | ESE 7 | NE 6 | NE 6 | NE 6 | S 5 | S 9 | SSE 8 | S 10 | S 10 | S 10 | S 10 |
| kJ | 57 | 96 | 104 | 80 | 175 | 81 | 25 | 49 | 64 | 57 | 5 | 16 | 9 | 18 | 16 | 113 | 94 | 161 | 156 | 121 | 116 |
Swell 2 Height (m) Direction Period (s) | E 9 | S 11 | ESE 11 | ENE 6 | S 8 | E 12 | ESE 8 | E 10 | E 10 | S 11 | S 11 | S 10 | S 4 | S 8 | NE 6 | SE 5 | S 12 | NE 8 | ENE 8 | S 16 | ENE 9 |
| kJ | 6 | 56 | 100 | 24 | 10 | 3 | 58 | 2 | 2 | 2 | 2 | 8 | 1 | 6 | 9 | 25 | 77 | 16 | 33 | 20 | 30 |
Swell 3 Height (m) Direction Period (s) | SE 15 | ESE 14 | S 10 | SE 7 | E 9 | — | E 11 | S 13 | S 12 | S 11 | E 10 | SE 7 | S 9 | E 9 | S 8 | S 16 | ENE 9 | E 14 | E 13 | E 13 | ENE 4 |
| kJ | 9 | 61 | 46 | 43 | 6 | — | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 6 | 79 | 30 | 4 | 3 | 3 | 7 |
Wind waves Height (m) Direction Period (s) | ESE 7 | — | — | — | NE 3 | NE 5 | NE 5 | ENE 6 | — | WNW 2 | ENE 6 | SSW 2 | — | S 4 | — | — | NE 9 | ENE 4 | — | ENE 9 | — |
| kJ | 114 | — | — | — | 5 | 60 | 25 | 68 | — | 1 | 33 | 1 | — | 1 | — | — | 38 | 9 | — | 67 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 39 | 38 | 0 | 0 | 378 | 0 | 0 | 7 | 0 | 1 | 1 | 232 | 276 | 271 | 21 | 1 | 38 | 1 | 1 | 38 | 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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