
Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 11 Sep 2026:
- Best quality surf: Monday 14 Sep, 1AM (local time) - 5.5ft (1.7m), 6s period, NNE swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 7PM (local time) - 7ft (2.1m), 9s period, SSE swell with 616 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 5.5ft (1.7m), 6s period with NNE 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 1.7m and 6s period with a secondary swell of 1.4m and 6s. 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 2.1m 9s and forecast to arrive on Thursday (Sep 17) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 10s period and expected on Wednesday (Sep 16) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 14th Sep) | 5.5ft (1.7m) 6s |
| Best Surf | 1AM (Mon 14th Sep) | 5.5ft (1.7m) 6s |
| Most Powerful | 7PM (Thu 17th Sep) | 7ft (2.1m) 9s |
Table - best surf conditions forecast for Narrabeen-Alley Rights over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at what’s coming up for Narrabeen-Alley Rights. Honestly, it’s a tough stretch ahead. For the next week and a half, we’re mostly stuck with tiny, messy, or onshore slop, and the scoreboard barely flicks.
It kicks off Friday the 11th with absolutely nothing doing – 0.7ft of weak, long-period ENE groundswell washing in (period 15 seconds) but with a light cross breeze. The combined energy is just 42, which is practically flat. The water temp is 64°, about normal for this time of year, so nothing wild there. Saturday the 12th is glassy in the morning but still only 0.7ft, and then Saturday arvo a SSE swell tries to build to 4ft (period 11 seconds, energy 317) but the wind swings ENE at 12 mph, cross-onshore and choppy. Not worth paddling out.
Sunday the 13th is a joke – 2ft with a period of 5 seconds – barely a ripple. Monday the 14th sees a little pulse: 5ft NE swell (period 5 seconds) by the afternoon, energy up to 123, but it’s still just surfable, not good. Light cross-off wind keeps it clean-ish, but the period is way too short for any real shape. Tuesday the 15th and Wednesday the 16th are a write-off: strong southerly winds up to 25 mph on Wednesday, cross-onshore and messy. Thursday the 17th is even worse – 0.3ft, energy of 3. That’s plain flat.
Then there’s a long gap of nothing. A glimmer appears on Friday the 18th morning: glassy calm, 3ft ESE swell (period 7 seconds, energy 68). It’s surfable but very ordinary – no power behind it. Saturday the 19th morning is clean with a light N cross-off wind, 3ft E swell (period 10 seconds, energy 125) – that’s the best of a bad bunch, but it’s still not a standout. The period is short, and the energy is just moderate.
We then hit another dry spell through to the 23rd, with tiny waves or nothing at all. Finally, on Thursday the 24th, something changes. The morning brings a glassy, calm sea and a solid 6ft SSE swell (period 8 seconds, combined energy 446 – moderate to strong). The wind is dead calm – glassy conditions. That’s a proper window. The swell is around 6ft, which is getting into the expert-only range, especially at a beach/sandbar setup like this. The period is 8 seconds, so it won’t have that long, lined-up groundswell feel, but with zero wind, it should be clean and punchy. This is the only true standout in the entire 16-day outlook – Thursday the 24th morning. After that, Friday the 25th and Saturday the 26th drop back to mediocre, onshore slop.
Bottom line: most of the forecast is a bust. If you’re keen, target Thursday the 24th morning for the best shot. The crowd factor at Narrabeen-Alley Rights is “often” busy, so be ready for company. But that morning, with glass and 6ft, it’s worth it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun morning, min 13°C on Fri morning). Winds increasing (calm on Sat morning, fresh winds from the NNE by Sun afternoon). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Tue night. Warm (max 22°C on Mon morning, min 10°C on Tue night). Winds increasing (light winds from the NNW on Mon night, strong winds from the S by Wed morning). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 15 | ENE 14 | ENE 13 | ENE 14 | SSE 11 | NE 4 | ENE 5 | NE 4 | NNE 6 | NE 6 | NE 5 | NE 7 | NE 6 | SSE 4 | ENE 13 | ENE 14 | ENE 13 | ENE 13 | E 13 | E 13 | SSE 8 |
Wave Graph | |||||||||||||||||||||
21 | 18 | 18 | 19 | 297 | 17 | 14 | 45 | 216 | 54 | 107 | 230 | 58 | 34 | 18 | 20 | 16 | 17 | 3 | 3 | 428 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-off | glassy | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross-off | off | cross | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 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 | 12:00PM1.32m | 00:37AM0.91m | ||||||||
Low Tide | 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 | 5:19AM0.45m | 6:52PM0.45m | ||||||||
6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | |
— | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 1 | — | 3 | — | — | — |
Temp °C | 15 | 15 | 15 | 17 | 17 | 16 | 18 | 18 | 17 | 22 | 22 | 20 | 20 | 17 | 13 | 13 | 14 | 13 | 13 | 13 | 14 |
Feels °C | 14 | 13 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 18 | 19 | 17 | 17 | 15 | 6 | 4 | 5 | 5 | 6 | 8 | 11 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 12 | SSE 11 | S 10 | S 10 | S 11 | NE 6 | NE 6 | S 11 | NE 7 | NE 6 | NE 6 | NE 6 | ENE 14 | ENE 13 | ENE 13 | S 18 | S 17 | SSE 8 |
627 | 489 | 332 | 418 | 297 | 154 | 177 | 181 | 151 | 54 | 81 | 155 | 58 | 31 | 6 | 20 | 16 | 17 | 6 | 23 | 428 | |
Swell 2 Height (m) Direction Period (s) | ENE 15 | ENE 14 | S 19 | S 19 | S 17 | S 20 | ENE 5 | ENE 13 | S 12 | S 11 | ENE 13 | S 10 | S 10 | S 9 | ENE 13 | S 18 | — | — | E 13 | E 13 | S 19 |
21 | 18 | 61 | 184 | 142 | 121 | 14 | 17 | 175 | 123 | 16 | 47 | 28 | 14 | 18 | 24 | — | — | 3 | 3 | 7 | |
Swell 3 Height (m) Direction Period (s) | ENE 15 | E 10 | ENE 13 | ENE 14 | ENE 14 | ENE 13 | S 17 | ENE 13 | ENE 13 | ENE 13 | — | ENE 12 | NE 13 | ENE 13 | — | — | — | — | — | — | E 13 |
21 | 2 | 18 | 19 | 19 | 16 | 50 | 17 | 17 | 17 | — | 15 | 6 | 17 | — | — | — | — | — | — | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 2 | NE 4 | NE 4 | NE 4 | NNE 6 | — | NE 5 | NE 7 | — | SSE 4 | S 8 | S 9 | S 10 | S 10 | S 9 | SSE 9 | — |
— | — | — | — | 1 | 17 | 21 | 45 | 216 | — | 107 | 230 | — | 34 | 1355 | 2035 | 3077 | 2783 | 1476 | 841 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 38 | 1 | 1 | 444 | 1 | 4 | 513 | 0 | 0 | 0 | 0 | 2 | 115 | 162 | 832 | 734 | 195 | 115 | 162 | 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.










