Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 13 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 4AM (local time) - 4.5ft (1.4m), 7s period, ESE swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 1PM (local time) - 5ft (1.5m), 7s period, SSE swell with 199 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 4AM (local time) - 3ft (0.9m), 6s period with SE 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 4AM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.8m and 6s. 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 1.5m 7s and forecast to arrive on Sunday (Aug 16) at 1PM. 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 7s period and expected on Saturday (Aug 15) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 18th Aug) | 3ft (0.9m) 6s |
| Best Surf | 4AM (Wed 19th Aug) | 4.5ft (1.4m) 7s |
| Most Powerful | 1PM (Sun 16th Aug) | 5ft (1.5m) 7s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
G’day, it’s Rusty.
Truth be told, the next couple of weeks ain’t looking flash for the Alley. A whole run of small, messy, onshore slop is on the cards, and the first thing resembling a real surf doesn’t show up until Thursday the 20th. Before that, from now until the 19th, it’s junk – tiny windswell and cross-onshore crap. You can leave the boards in the car.
The water’s sitting at about 62°F at the start, which is a bit colder than usual for this time of year, so the hood and boots are a must.
Your first chance is Thursday the 20th. The morning’s best, with a light NNW cross-off wind keeping things clean. There’s a weak 4ft of east-southeast swell, but the period is only 7 seconds, so it’ll be soft and crumbly. The energy is weak (105), so it won’t have any punch, but at least the surface will be clean. It’s a beach break, so with this short period, expect it to be sectiony and a bit gutless. Still, it’s something to get wet for.
Friday the 21st is a smaller, weaker version. The morning has a light northerly offshore and 2ft of east-southeast swell. Clean, but gutless. The afternoon gets chopped out by a strong nor'easter, so your window is early.
Saturday the 22nd is a mixed bag. The morning starts with a gentle NNW offshore and 2ft of east-northeast swell. Clean, but tiny. The afternoon brings a fresh NW wind and the swell bumps to 3ft with a touch more energy (121). Still small, but the offshore wind will keep it glassy. Another one for the longboard.
The best of a bad bunch is Sunday the 23rd and Monday the 24th. Sunday’s got a solid cross-offshore W wind, and the swell holds at 3ft from the east-northeast with a 9-second period. The energy is moderate (155-165), keeping it a bit more pushy and clean. Monday the 24th looks good too – morning has a WSW cross-off and 3ft of ENE swell. But the standout is Monday afternoon: the wind drops to nothing and it’s glassy, with 3ft of east-northeast swell and a 10-second period (146). That’s your cleanest, most user-friendly window. Not big, but it’ll be the best shape and most fun you’ll have.
After that, the mid-week gets blown out by strong winds, and the size fades. By Thursday the 27th, a strong southerly change with gale-force winds moves in and the surf drops to zero – definitely a day to stay on the beach.
So, to wrap it up: nothing for the first week. The pick is Monday the 24th afternoon for a clean, glassy 3ft of east-northeast swell. Sunday the 23rd is also okay if you don’t mind the cross-off. Everything else is either tiny, junky, or blown out. That Monday arvo is your one standout – don’t sleep on it.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Sat morning. Very mild (max 17°C on Thu morning, min 11°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sun morning. Very mild (max 16°C on Sun afternoon, min 13°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | ENE 10 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | SSE 6 | SE 7 | SE 6 | ESE 7 | ESE 7 | ESE 6 | SE 7 | SE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 7 |
Wave Graph | |||||||||||||||||||||
54 | 35 | 29 | 31 | 31 | 29 | 17 | 18 | 19 | 193 | 158 | 162 | 121 | 99 | 146 | 61 | 44 | 121 | 144 | 121 | 128 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross-off | cross-off | on | glassy | cross-on | cross-on | cross | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross | cross-on | off |
High Tide | 8:36PM1.75m | 9:17AM1.31m | 9:20PM1.66m | 9:59AM1.34m | 10:02PM1.53m | 10:40AM1.36m | 10:44PM1.37m | 11:22AM1.36m | 11:27PM1.21m | 12:05PM1.34m | 00:14AM1.06m | 12:54PM1.30m | 1:09AM0.94m | ||||||||
Low Tide | 2:13PM0.19m | 3:13AM-0.02m | 3:02PM0.19m | 3:51AM0.02m | 3:50PM0.23m | 4:27AM0.10m | 4:40PM0.28m | 5:01AM0.19m | 5:31PM0.36m | 5:36AM0.29m | 6:27PM0.43m | 6:12AM0.39m | 7:32PM0.49m | ||||||||
6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | |
— | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — | |
mm | — | — | — | — | — | 3 | 4 | 1 | 4 | 1 | 1 | 2 | 1 | 2 | — | — | — | 1 | — | — | 1 |
Temp °C | 17 | 16 | 14 | 16 | 15 | 15 | 14 | 16 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 16 | 15 | 15 | 17 | 16 | 15 |
Feels °C | 13 | 12 | 9 | 13 | 11 | 14 | 12 | 12 | 12 | 10 | 12 | 12 | 12 | 11 | 12 | 14 | 12 | 14 | 16 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 8 | S 9 | S 8 | S 9 | S 9 | ENE 10 | S 7 | S 17 | SE 7 | S 11 | ESE 7 | S 9 | S 8 | SE 7 | SE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 7 |
110 | 436 | 260 | 209 | 138 | 203 | 251 | 18 | 187 | 95 | 158 | 149 | 121 | 78 | 34 | 61 | 44 | 121 | 144 | 121 | 128 | |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | S 19 | S 18 | S 12 | S 12 | ENE 10 | S 10 | ENE 8 | S 12 | E 6 | E 6 | S 10 | ESE 9 | ESE 9 | — |
54 | 35 | 29 | 31 | 31 | 29 | 17 | 61 | 98 | 27 | 66 | 10 | 116 | 14 | 24 | 33 | 24 | 30 | 35 | 31 | — | |
Swell 3 Height (m) Direction Period (s) | S 16 | S 19 | S 16 | S 18 | S 15 | S 16 | S 19 | SE 8 | ENE 10 | ENE 10 | SSW 8 | S 17 | — | ENE 8 | ESE 10 | S 11 | S 11 | ESE 11 | S 9 | S 8 | S 14 |
5 | 7 | 19 | 26 | 18 | 19 | 65 | 2 | 19 | 19 | 21 | 23 | — | 14 | 10 | 57 | 56 | 40 | 13 | 12 | 4 | |
Wind waves Height (m) Direction Period (s) | WSW 4 | — | — | — | — | — | — | S 8 | — | SSE 6 | — | SE 6 | — | ESE 7 | ESE 6 | — | — | — | — | — | — |
9 | — | — | — | — | — | — | 259 | — | 193 | — | 162 | — | 99 | 146 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 2 | 1 | 1 | 54 | 1 | 2 | 54 | 2 | 123 | 2 | 87 | 87 | 195 | 19 | 38 | 38 | 0 | 1 | 74 | 0 |
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.











