Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 9 Sep 2026:
- Best quality surf: Monday 14 Sep, 10PM (local time) - 4.5ft (1.3m), 6s period, NE swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 1AM (local time) - 6ft (1.8m), 9s period, SSE swell with 493 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 4ft (1.2m), 6s period with NE 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 (Sep 14) at 1AM. The primary swell is predicted to be 1.2m and 6s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Narrabeen-Alley Rights in the next 16 days are 1.8m 9s and forecast to arrive on Wednesday (Sep 16) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 10s period and expected on Thursday (Sep 10) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 14th Sep) | 4ft (1.2m) 6s |
| Best Surf | 10PM (Mon 14th Sep) | 4.5ft (1.3m) 6s |
| Most Powerful | 1AM (Wed 16th Sep) | 6ft (1.8m) 9s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what we’ve got.
Honestly, the outlook for Narrabeen-Alley Rights is a tough one. We’re looking at a long, dry spell with nothing worth paddling out for. The first surf that’s even worth a mention isn’t until the second week. There’s a big gap of flat, choppy, and messy conditions before anything remotely surfable shows up.
The first day that gets a sniff of a recommendation is Monday, September 14th. The morning shows a tiny 3ft swell from the NE, with a period of only 6 seconds – that’s weak, short-period windswell, with combined energy of 57 (that’s weak). The wind is light and cross-offshore from the NNW, so it’ll look clean, but the waves will be very ordinary. After that, it’s back to poor surf for days.
The next real chance is on Sunday, September 20th. The morning brings a 2ft swell from the SSE, with a much better period of 15 seconds – that’s a proper long-period groundswell. The energy is moderate at 182. Winds are light cross-offshore from the NNE, making for clean conditions. This is the standout session of the whole outlook. The combo of that long-period groundswell and light offshore wind will produce the cleanest, most lined-up waves of the entire period. For a beach/sandbar setup like this, the long period (over 15 seconds) can make the waves break a bit straight, so look for any defined banks or a rip bowl to get the best out of it.
Finally, Tuesday, September 22nd shows some promise in the morning. We’ve got a 2ft SSE swell, period of 12 seconds, with moderate energy at 202. Winds are light cross-offshore from the NNE, keeping it clean. The data says “expect good surf conditions” here. This is the most promising morning of the whole outlook, but remember, it’s a long way off, so keep an eye on the forecasts.
The water temp is sitting at 64°F, which is about average for this time of year, so no surprises.
The standout for the whole 16 days is the Sunday, September 20th morning session. The other morning to watch is Tuesday, September 22nd. Everything else is a write-off.
Rusty, signing off.
Short Range ForecastMostly dry. Very mild (max 17°C on Sat morning, min 12°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 25°C on Mon morning, min 15°C on Tue afternoon). Mainly fresh winds. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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 10 | ESE 9 | E 15 | ENE 15 | ENE 14 | ENE 13 | ENE 14 | SSE 11 | NE 4 | ENE 13 | NE 4 | NE 6 | NE 6 | NE 5 | NE 6 | SSE 5 | SSE 7 | SSE 9 | NE 12 | E 14 | ENE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 25 | 17 | 4 | 21 | 18 | 18 | 19 | 350 | 13 | 17 | 28 | 102 | 40 | 92 | 85 | 37 | 293 | 493 | 6 | 6 | 17 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | on | cross-off | glassy | cross | cross-off | cross-off | cross | off | cross-off | cross | off | cross-on | on | on | on | cross-on | cross-off |
High Tide | 7:32PM1.63m | 8:07AM1.38m | 8:14PM1.58m | 8:45AM1.44m | 8:55PM1.48m | 9:21AM1.47m | 9:35PM1.36m | 9:57AM1.47m | 10:15PM1.23m | 10:35AM1.44m | 10:56PM1.11m | 11:14AM1.39m | 11:41PM1.00m | ||||||||
Low Tide | 1:14PM0.21m | 2:00AM0.03m | 2:02PM0.17m | 2:35AM0.06m | 2:47PM0.16m | 3:08AM0.11m | 3:32PM0.18m | 3:40AM0.19m | 4:16PM0.23m | 4:11AM0.28m | 5:03PM0.30m | 4:43AM0.37m | 5:53PM0.38m | ||||||||
 |  |  |  | |  | | | | | | | | | | |  |  | | | | |
 | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | 5:42 | — | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 14 | 15 | 15 | 16 | 15 | 15 | 17 | 16 | 16 | 19 | 18 | 18 | 25 | 22 | 23 | 17 | 15 | 15 | 15 | 15 | 16 |
Feels °C | 9 | 10 | 13 | 14 | 13 | 15 | 15 | 13 | 15 | 16 | 14 | 15 | 21 | 17 | 20 | 14 | 11 | 11 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SE 10 | S 22 | S 10 | S 10 | S 10 | S 10 | S 12 | SSE 11 | S 10 | S 10 | S 11 | NE 6 | NE 6 | S 11 | NE 6 | NE 6 | NE 6 | NE 6 | S 8 | S 12 | S 11 |
| kJ | 25 | 233 | 947 | 618 | 529 | 377 | 411 | 350 | 194 | 167 | 184 | 102 | 40 | 79 | 85 | 31 | 13 | 5 | 405 | 734 | 375 |
Swell 2 Height (m) Direction Period (s) | S 23 | ESE 9 | E 15 | ENE 15 | ENE 14 | S 18 | S 19 | S 17 | NE 4 | S 16 | ENE 13 | S 12 | S 11 | ENE 13 | S 10 | S 10 | ENE 13 | S 17 | S 15 | NE 12 | ENE 13 |
| kJ | 92 | 17 | 4 | 21 | 18 | 27 | 182 | 138 | 13 | 48 | 17 | 175 | 121 | 16 | 47 | 28 | 17 | 23 | 112 | 6 | 17 |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | E 10 | ENE 15 | E 10 | ENE 13 | ENE 14 | ENE 14 | S 20 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | — | ENE 12 | ENE 13 | — | ENE 13 | NE 12 | E 14 | ENE 5 |
| kJ | 1 | 2 | 2 | 21 | 2 | 18 | 19 | 19 | 186 | 17 | 17 | 17 | 17 | — | 15 | 16 | — | 18 | 6 | 4 | 3 |
Wind waves Height (m) Direction Period (s) | S 9 | S 10 | — | — | — | — | — | ENE 2 | NE 4 | NE 4 | NE 4 | N 6 | — | NE 5 | — | SSE 5 | SSE 7 | SSE 9 | — | — | — |
| kJ | 963 | 1048 | — | — | — | — | — | 1 | 12 | 4 | 28 | 94 | — | 92 | — | 37 | 293 | 493 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 54 | 1 | 2 | 2 | 1 | 1 | 377 | 1 | 4 | 513 | 0 | 0 | 59 | 0 | 187 | 162 | 195 | 2 | 18 | 1 |
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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