
Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 12 Sep 2026:
- Best quality surf: Monday 14 Sep, 1AM (local time) - 5ft (1.6m), 6s period, NE swell with offshore winds.
- Most powerful swell: Thursday 17 Sep, 10PM (local time) - 8ft (2.4m), 9s period, SSE swell with 897 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10PM (local time) - 5ft (1.6m), 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 Sunday (Sep 13) at 10PM. The primary swell is predicted to be 1.6m and 6s period with a secondary swell of 0.2m and 13s. 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 2.4m 9s and forecast to arrive on Thursday (Sep 17) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 10s period and expected on Wednesday (Sep 16) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 13th Sep) | 5ft (1.6m) 6s |
| Best Surf | 1AM (Mon 14th Sep) | 5ft (1.6m) 6s |
| Most Powerful | 10PM (Thu 17th Sep) | 8ft (2.4m) 9s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
Righto, grab a coffee and settle in. Let’s have a look at what’s coming for Narrabeen-Alley Rights over the next couple of weeks. I’ll tell you straight up – it’s a frustrating run for the most part. We’ve got a whole heap of days where the wind is just in the wrong spot or the swell is too small and weak to get excited about. There’s a solid window of poor surf from now through until the middle of next week, so don’t hold your breath.
The water temp here is sitting at 63°, which is about 1° cooler than usual for this time of year – nothing wild, just a touch on the fresh side.
Alright, let’s get into it. The first day that even raises an eyebrow is Friday 18th September. The morning is the pick. We get a clean, glassy start with a light offshore breeze out of the NW, and a solid 5ft swell rolling in from the ESE with a period of 10 seconds. That’s a decent groundswell with moderate energy (409), pushing some nice shape. This is a standout window – the best on offer by a long shot. It’s an exposed beach-and-sandbar setup that can handle an east-southeast direction well, and with the wind light offshore, it’ll be clean. Keep in mind this break is very consistent and draws an advanced crew, so it won’t be empty – crowds are likely. The swell is just under the 5ft mark, so it’s manageable for strong intermediates but not a beginner wave on the day.
Saturday 19th September morning still has some fun left. Another clean morning with a light offshore from the W, but the swell has backed off to 3ft from the ESE, still with a long 11-second period. Combined energy is moderate (238), so the waves will have some push but it’s smaller. Still a good option if you missed the Friday session. The afternoons on both days turn messy with cross-shore wind, so get in early.
After that, we’re back into a long stretch of near-flat or wind-chopped conditions. There’s a glimmer on Tuesday 22nd September morning, but it’s a marginal call. We get a 6ft swell from the SSE with an 8-second period, but the wind is cross-shore from the NE at 12 mph, creating a lumpy cross-chop. The combined energy is strong (504), meaning there’s plenty of water moving, but the short period and onshore-canted winds will make it a bumpy, messy affair. That size is getting into the expert-only zone for a beach break, honestly. It’s more of a kite-surfing day than a clean paddle session.
Late in the period, Sunday 27th September afternoon has a 5ft swell from the S with a 6-second period. The wind is cross-off from the NNE, so it’ll be clean, but the period is super short – that’s windswell, not groundswell – so the waves will be crumbly and lack power. Combined energy is moderate (222), but it’s not going to be a classic.
Bottom line: Friday 18th September morning is your standout. It’s clean, the swell has push and shape, and the wind plays ball. Saturday morning is a solid backup. Everything else in this 16-day window is either too small, too windy, or too messy to recommend for a proper paddle session.
Stay patient, and keep an eye on the wind shifts – it tends not to stay poor forever.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 11°C on Tue night). Winds increasing (light winds from the NNW on Sun night, strong winds from the S by Tue night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Fri morning, min 9°C on Wed night). Winds decreasing (strong winds from the SSW on Wed morning, light winds from the NW by Fri morning). | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 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) | NE 5 | NE 5 | NE 6 | NE 6 | NE 5 | NE 6 | NE 6 | NE 7 | NE 7 | ENE 14 | S 10 | S 10 | E 13 | E 13 | ESE 8 | ESE 10 | SE 11 | ESE 11 | ESE 11 | SE 10 | SE 8 |
Wave Graph | |||||||||||||||||||||
20 | 56 | 207 | 54 | 66 | 177 | 61 | 46 | 18 | 20 | 0 | 0 | 7 | 3 | 175 | 409 | 476 | 418 | 238 | 108 | 35 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | off | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross | cross-on | cross | cross | cross-on | cross-off | off | cross | off | cross-off | cross | cross-off |
High Tide | 9:35PM1.36m | 9:57AM1.47m | 10:15PM1.23m | 10:35AM1.44m | 10:56PM1.11m | 11:14AM1.39m | 11:41PM1.00m | 12:00PM1.32m | 00:37AM0.91m | 12:56PM1.26m | 1:51AM0.85m | 2:05PM1.23m | 3:18AM0.86m | ||||||||
Low Tide | 3:32PM0.18m | 3:40AM0.19m | 4:16PM0.23m | 4:11AM0.28m | 5:03PM0.30m | 4:43AM0.37m | 5:53PM0.38m | 5:19AM0.45m | 6:52PM0.45m | 6:04AM0.53m | 8:05PM0.49m | 7:05AM0.59m | 9:22PM0.48m | ||||||||
5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:48 | — | — | |
— | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 17 | 23 | 21 | 21 | 21 | 17 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 18 | 17 | 17 | 25 | 24 | 22 |
Feels °C | 15 | 14 | 14 | 20 | 18 | 18 | 19 | 14 | 5 | 4 | 5 | 6 | 7 | 8 | 11 | 15 | 13 | 15 | 22 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | NE 6 | NE 6 | S 11 | NE 6 | NE 6 | NE 7 | NE 7 | ENE 14 | — | — | E 13 | E 13 | S 9 | ESE 10 | SE 11 | ESE 11 | ESE 11 | S 9 | S 9 |
181 | 181 | 145 | 54 | 81 | 128 | 61 | 46 | 15 | 20 | — | — | 3 | 3 | 516 | 409 | 476 | 418 | 238 | 110 | 104 | |
Swell 2 Height (m) Direction Period (s) | NE 5 | ENE 13 | S 12 | S 11 | ENE 13 | S 10 | S 10 | S 9 | ENE 13 | NE 7 | — | — | NE 13 | S 19 | ESE 8 | S 8 | S 9 | S 9 | S 9 | SE 10 | NE 5 |
20 | 17 | 175 | 123 | 16 | 48 | 29 | 14 | 18 | 2 | — | — | 7 | 7 | 175 | 234 | 251 | 287 | 130 | 108 | 22 | |
Swell 3 Height (m) Direction Period (s) | S 17 | ENE 13 | ENE 13 | ENE 13 | — | ENE 12 | NE 13 | ENE 13 | — | — | — | — | — | — | E 13 | S 18 | S 18 | S 16 | S 14 | S 14 | SE 8 |
49 | 17 | 17 | 17 | — | 15 | 6 | 17 | — | — | — | — | — | — | 3 | 6 | 24 | 132 | 102 | 103 | 35 | |
Wind waves Height (m) Direction Period (s) | NE 5 | NE 5 | NE 6 | — | NE 5 | NE 6 | SSW 3 | SSE 4 | S 8 | S 9 | S 10 | S 10 | S 10 | S 10 | — | — | — | — | — | ENE 3 | — |
30 | 56 | 207 | — | 66 | 177 | 1 | 14 | 1003 | 1526 | 3232 | 3461 | 2324 | 1729 | — | — | — | — | — | 3 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 189 | 0 | 0 | 19 | 0 | 2 | 123 | 81 | 833 | 734 | 195 | 162 | 195 | 0 | 0 | 7 | 0 | 0 | 18 | 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.










