Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 28 Aug 2026:
- Best quality surf: Saturday 29 Aug, 7AM (local time) - 4ft (1.2m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 4PM (local time) - 5ft (1.5m), 10s period, SSE swell with 433 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 7AM (local time) - 4ft (1.2m), 9s period with SSE 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 Saturday (Aug 29) at 7AM. The primary swell is predicted to be 1.2m and 9s period with a secondary swell of 0.4m 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 1.5m 10s and forecast to arrive on Friday (Aug 28) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 9s period and expected on Sunday (Aug 30) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 29th Aug) | 4ft (1.2m) 9s |
| Best Surf | 7AM (Sat 29th Aug) | 4ft (1.2m) 9s |
| Most Powerful | 4PM (Fri 28th Aug) | 5ft (1.5m) 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 the northern beaches.
Straight up, the first real action is a quick-hitting window on Friday, August 28, then it dries up for the better part of a week. Don’t sleep on that Friday morning.
The standout is Friday morning, August 28, at Narrabeen-Alley Rights. You’ve got a 6ft swell coming from the SSE, with a period of 11 seconds, and the combined wave energy is sitting at 669 (moderate). Wind is glassy – WNW at only 3 mph – so the surface will be like a mirror. Water temp is 64°, about normal for the season. This is a session for the experienced crew, and with the break being very consistent, you’ll get plenty of waves. Just be aware crowds are often out here. The morning is the call; the afternoon brings an onshore breeze and the quality goes out the window.
From there, it’s a long quiet stretch. Saturday the 29th has a 4ft swell but the wind is cross-onshore, so it’s not worth chasing. Sunday the 30th drops to 2ft, and from Monday the 31st all through to September 8, the waves are mostly under 2ft with very low energy (combined energy in single digits and low tens). There are plenty of clean, offshore mornings, but no swell to ride. On September 5, there’s a 3ft bump from the SSW, but with a period of only 5 seconds it’s just wind chop – forget it.
Things look better again on Wednesday, September 9, when a new SSE groundswell arrives. Wednesday morning brings 3ft with a very long 16-second period and combined energy of 575 (moderate). At a beach break, that long period can make the wave stand up and close out a bit, so pick your peak. Wind is light cross-onshore, so it's not perfect. Then on Thursday, September 10, the swell builds to 6ft from the SSE with an 11-second period and combined energy of 825 (strong). That’s a proper sized swell, but with the onshore wind it’s more for the hardcore crew only. After that, it fades back to small and messy.
So the takeaway: one killer session early Friday morning, August 28. After that, you're waiting until early September for size, and the wind’s not doing you any favors. Keep an eye out, things can change.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Fri morning, min 12°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed morning, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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) | SSE 11 | SSE 10 | SSE 9 | SSE 10 | SSE 9 | SSE 9 | SE 9 | SE 9 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SSE 10 | SSE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 643 | 433 | 287 | 251 | 231 | 151 | 88 | 52 | 24 | 17 | 28 | 15 | 23 | 38 | 34 | 34 | 33 | 31 | 31 | 33 | 38 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | on | glassy | glassy | on | cross-off | glassy | cross | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off |
High Tide | 8:15PM1.55m | 8:49AM1.30m | 8:51PM1.52m | 9:24AM1.36m | 9:28PM1.45m | 10:01AM1.41m | 10:08PM1.36m | 10:42AM1.43m | 10:53PM1.25m | 11:27AM1.43m | 11:46PM1.13m | 12:21PM1.42m | 00:52AM1.02m | ||||||||
Low Tide | 1:59PM0.28m | 2:44AM0.10m | 2:39PM0.25m | 3:15AM0.10m | 3:21PM0.25m | 3:46AM0.12m | 4:06PM0.26m | 4:20AM0.17m | 4:56PM0.28m | 4:58AM0.24m | 5:53PM0.32m | 5:43AM0.32m | 7:02PM0.36m | ||||||||
 | |  | | | | | | | | | | | | |  |  | | | |  | |
 | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 15 | 15 | 16 | 15 | 14 | 17 | 15 | 15 | 17 | 16 | 15 | 22 | 23 | 20 | 25 | 25 | 22 | 28 | 27 | 20 |
Feels °C | 15 | 11 | 13 | 14 | 13 | 14 | 15 | 12 | 14 | 15 | 13 | 14 | 18 | 20 | 17 | 22 | 22 | 20 | 22 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SSE 10 | SSE 9 | SSE 10 | SSE 9 | SSE 9 | S 9 | S 9 | S 9 | S 8 | S 11 | S 9 | S 11 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | SSE 10 | SSE 11 |
| kJ | 643 | 433 | 287 | 251 | 231 | 151 | 127 | 145 | 327 | 146 | 284 | 139 | 233 | 189 | 141 | 96 | 68 | 49 | 52 | 33 | 38 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | S 8 | S 8 | S 8 | SE 9 | SE 9 | S 17 | S 16 | S 15 | S 15 | ENE 11 | ENE 11 | NE 5 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | NE 5 | ENE 10 |
| kJ | 26 | 26 | 25 | 115 | 160 | 95 | 88 | 52 | 148 | 243 | 116 | 71 | 23 | 38 | 23 | 34 | 33 | 31 | 31 | 6 | 32 |
Swell 3 Height (m) Direction Period (s) | S 14 | S 13 | S 11 | ENE 9 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | N 12 | ENE 10 | NE 5 | NNE 5 | SSE 13 | NE 5 | ENE 10 | NE 6 |
| kJ | 58 | 30 | 37 | 29 | 28 | 32 | 29 | 24 | 24 | 17 | 28 | 15 | 7 | 3 | 34 | 10 | 9 | 16 | 3 | 32 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NE 3 | NNE 3 | NE 4 | WNW 2 | WNW 3 | NNE 3 | NNW 2 | NNW 4 | WNW 3 | WSW 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 29 | 1 | 1 | 6 | 1 | 7 | 8 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 125 | 2 | 2 | 2 | 0 | 0 | 2 | 1 | 1 | 18 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 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.
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