Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 10 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 1PM (local time) - 2.5ft (0.8m), 9s period, ENE swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 10PM (local time) - 3.5ft (1.1m), 10s period, NE swell with 230 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 1PM (local time) - 2.5ft (0.8m), 9s period with ENE 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 11) at 1PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.7m and 9s. The wind is predicted to be cross-offshore 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 Monday (Aug 10) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 9s period and expected on Thursday (Aug 13) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Tue 11th Aug) | 2.5ft (0.8m) 9s |
| Best Surf | 1PM (Tue 11th Aug) | 2.5ft (0.8m) 9s |
| Most Powerful | 10PM (Mon 10th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
Alright, Rusty here, let’s break it down for you.
The first real chance to get wet is on Monday, August 10th, at Narrabeen-Alley Rights. You’ve got a 1.7m NE swell coming in, but that NW wind is blowing a solid 40 km/h. It’s offshore, so it’ll be clean, but it’s a strong breeze, making it a real workout to paddle into. The water temp is 17°, a bit cooler than average for this time of year. The combined energy is moderate (513). This one’s for the advanced crew only – it’s got some punch.
The rest of that week is mostly flat and forgettable. Tuesday the 11th drops to 0.7m, clean with a cross-off breeze, but tiny. The energy is weak (78). Wednesday through Friday are all under 0.5m, clean but not worth the effort. The energy is in the low double digits, 18 to 54. You’ll be sitting around waiting.
Saturday the 15th sees a bump to 1.2m, but it’s a short-period SSE windswell with rain and a messy cross-onshore wind. Choppy and ugly. The energy is 156, but it’s junk. Sunday the 16th is similar, 1.5m of short-period SSE swell, onshore and sloppy. The energy is 170, but it’s a washout. This is more kite-surfing conditions than paddle surfing.
The standout session is Wednesday, August 19th. A clean 1.4m ESE swell, and the wind goes completely glassy in the morning. No wind at all. The energy is moderate (191), and the period is short at 7 seconds, but with that glassy surface, it’ll be the cleanest surf of the whole forecast. For a beach break, that’s as good as it gets. That’s your best bet.
The following week stays small and average. Thursday the 20th through to the end of the period is mostly 0.5m to 1.0m. There are a few clean mornings with light offshore winds, like the 21st and 22nd, but the swell is tiny. The 23rd has a 1.0m ENE swell with a light offshore from the NNW, early, which will be rideable but ordinary. The energy is 156, so there’s a little push, but the waves are small and weak.
Bottom line: the first week is rough. Wednesday the 19th is the clear standout – get out there early for the glassy morning. After that, it’s a long wait for anything worthwhile.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Tue morning, min 11°C on Tue night). Winds decreasing (strong winds from the NW on Mon afternoon, light winds from the W by Tue morning). | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Sat morning. Very mild (max 16°C on Sat afternoon, min 10°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | NE 9 | NE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 10 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SSE 7 | SSE 6 | ENE 10 | SSE 6 | ENE 10 | ESE 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 513 | 177 | 78 | 75 | 47 | 52 | 52 | 50 | 54 | 29 | 30 | 31 | 18 | 18 | 139 | 112 | 19 | 150 | 21 | 18 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | on | cross-off | cross-off | on | cross-on | cross-on | cross-on | cross | on | on | on |
High Tide | 6:09PM1.69m | 7:00AM1.12m | 7:01PM1.76m | 7:49AM1.19m | 7:50PM1.78m | 8:34AM1.25m | 8:36PM1.75m | 9:17AM1.31m | 9:20PM1.66m | 9:59AM1.34m | 10:02PM1.53m | 10:40AM1.36m | 10:44PM1.37m | |||||||
Low Tide | 1:02AM0.06m | 12:29PM0.27m | 1:50AM-0.01m | 1:22PM0.22m | 2:33AM-0.04m | 2:13PM0.19m | 3:13AM-0.02m | 3:02PM0.19m | 3:51AM0.02m | 3:50PM0.23m | 4:27AM0.10m | 4:40PM0.28m | ||||||||
 |  |  | | | | | | | | | | |  |  | |  | | | | |
 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 5:21 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | 5 | 4 | 3 | 5 |
Temp °C | 14 | 15 | 20 | 20 | 13 | 17 | 19 | 13 | 16 | 15 | 14 | 15 | 15 | 15 | 15 | 16 | 15 | 16 | 16 | 16 |
Feels °C | 6 | 9 | 17 | 16 | 7 | 13 | 14 | 8 | 11 | 10 | 10 | 11 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | NE 9 | NE 10 | ENE 9 | S 11 | S 10 | S 10 | S 9 | S 8 | S 8 | S 9 | S 8 | S 9 | S 9 | S 8 | SSE 7 | ENE 10 | S 13 | S 12 | S 12 | S 6 |
| kJ | 513 | 177 | 78 | 835 | 408 | 262 | 164 | 86 | 339 | 695 | 246 | 270 | 292 | 196 | 139 | 18 | 55 | 106 | 72 | 40 |
Swell 2 Height (m) Direction Period (s) | S 13 | E 13 | S 15 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 10 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | S 21 | ENE 9 | S 15 | ENE 10 | ENE 10 | ENE 10 | S 11 |
| kJ | 3 | 3 | 4 | 75 | 47 | 52 | 52 | 50 | 54 | 29 | 30 | 31 | 18 | 133 | 17 | 41 | 19 | 20 | 21 | 85 |
Swell 3 Height (m) Direction Period (s) | — | S 12 | S 12 | NE 8 | — | — | S 14 | S 13 | S 16 | — | — | S 16 | S 20 | ENE 10 | S 15 | S 12 | — | S 18 | S 16 | ESE 5 |
| kJ | — | 3 | 3 | 18 | — | — | 4 | 3 | 5 | — | — | 21 | 30 | 18 | 19 | 11 | — | 24 | 20 | 18 |
Wind waves Height (m) Direction Period (s) | NW 4 | W 4 | SSW 7 | — | W 3 | NW 3 | NNW 4 | W 4 | S 8 | — | — | — | S 9 | — | — | SSE 6 | SSE 6 | SSE 6 | S 6 | — |
| kJ | 64 | 35 | 145 | — | 8 | 5 | 1 | 9 | 529 | — | — | — | 429 | — | — | 112 | 170 | 150 | 190 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 127 | 249 | 4 | 0 | 1 | 1 | 4 | 1 | 2 | 54 | 4 | 1 | 2 | 2 | 26 | 54 | 2 | 26 | 89 | 217 |
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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