Surf Forecasts:
Narrabeen-Alley Rights surf forecast from 31 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 4PM (local time) - 1.5ft (0.4m), 11s period, ENE swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 1AM (local time) - 3.5ft (1.1m), 5s period, NE swell with 60 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 4PM (local time) - 1.5ft (0.4m), 11s 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 (Sep 01) at 4PM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.8m and 4s. 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 1.1m 5s and forecast to arrive on Monday (Sep 07) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 10s period and expected on Sunday (Sep 06) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Tue 1st Sep) | 1.5ft (0.4m) 11s |
| Best Surf | 4PM (Tue 1st Sep) | 1.5ft (0.4m) 11s |
| Most Powerful | 1AM (Mon 7th Sep) | 3.5ft (1.1m) 5s |
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 imperial crew. It’s a slow start, so don’t rush.
We’re talking about Narrabeen-Alley Rights (beach/sandbar). For the first week and a half, there’s nothing worth the paddle. Swell heights barely touch 1.3 ft, and combined swell energy is weak, sitting mostly below 100 (e.g., 17, 30, 66). Some offshore or clean wind spells don’t make up for the lack of push. Wednesday 2nd September morning has a NW 20 km/h offshore, but with only 1.3 ft of ENE swell at 10 seconds, it’s still a dud.
The first real look comes on Sunday 13th September. Swell bumps to 5.6 ft from the SSE with a 9-second period. The combined energy hits 488, which is moderate-strong, but the wind is moderate cross-onshore and choppy. Not great.
Monday 14th September morning is your best shot. You’ve got 3.9 ft of SSE swell (8-second period) and glassy conditions with a NNE 5 km/h wind. The combined energy is a solid 318 (moderate), and the call is “expect good surf conditions.” That’s your standout.
Keep in mind, 3.9 ft is fine for most, but the swell direction is SSE while the spot prefers ENE. Still, with glass, it’ll be clean. Crowds are likely – this place is very consistent and popular when it shows signs of life.
Tuesday 15th September morning also offers a window: 2.6 ft of ENE swell, 8 seconds, dead calm 0 km/h wind (glassy). Combined energy is 214 (moderate). Good for a small-wave board, but nothing huge.
Bottom line: wait through the first 12 days. The one to circle is Monday 14th September morning. After that, the pattern starts to look more interesting by mid-month.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 14°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Thu morning, min 13°C on Thu night). Winds increasing (light winds from the WNW on Thu night, strong winds from the WNW by Sat morning). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 9 | ENE 9 | ENE 9 | ENE 11 | ENE 11 | NE 6 | ENE 10 | ENE 10 | ENE 10 | NNE 5 | ENE 10 | SW 5 | ENE 10 | ENE 10 | NE 5 | NE 5 | E 9 | E 11 | E 11 | ENE 10 | NE 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 16 | 15 | 23 | 37 | 34 | 33 | 33 | 33 | 19 | 19 | 38 | 19 | 19 | 20 | 9 | 7 | 9 | 9 | 20 | 60 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-off | cross-off | off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross-off |
High Tide | 10:01AM1.41m | 10:08PM1.36m | 10:42AM1.43m | 10:53PM1.25m | 11:27AM1.43m | 11:46PM1.13m | 12:21PM1.42m | 00:52AM1.02m | 1:26PM1.41m | 2:16AM0.95m | 2:40PM1.43m | 3:45AM0.95m | 3:54PM1.48m | ||||||||
Low Tide | 4:06PM0.26m | 4:20AM0.17m | 4:56PM0.28m | 4:58AM0.24m | 5:53PM0.32m | 5:43AM0.32m | 7:02PM0.36m | 6:38AM0.40m | 8:23PM0.36m | 7:48AM0.45m | 9:47PM0.31m | 9:08AM0.46m | 10:57PM0.23m | ||||||||
 | |  | | |  |  | | | | | | | | | | | | | | | |
 | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 23 | 26 | 20 | 26 | 27 | 21 | 24 | 23 | 16 | 18 | 17 | 18 | 23 | 24 | 18 | 18 | 17 | 17 |
Feels °C | 14 | 14 | 15 | 19 | 22 | 17 | 22 | 24 | 19 | 19 | 18 | 11 | 13 | 11 | 15 | 17 | 20 | 16 | 15 | 14 | 16 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | NNE 5 | S 10 | SSW 5 | S 11 | S 9 | S 11 | S 9 | S 9 | S 9 | S 10 | S 9 | S 11 |
| kJ | 142 | 129 | 104 | 196 | 182 | 133 | 104 | 76 | 71 | 18 | 53 | 12 | 371 | 164 | 182 | 85 | 55 | 27 | 553 | 214 | 199 |
Swell 2 Height (m) Direction Period (s) | S 15 | S 16 | S 14 | ENE 11 | ENE 11 | NE 6 | NE 6 | NE 6 | ENE 10 | S 10 | NE 6 | SSE 10 | NE 7 | ENE 10 | NE 5 | NE 5 | NE 5 | E 11 | E 11 | ENE 10 | E 10 |
| kJ | 112 | 79 | 136 | 23 | 37 | 32 | 19 | 12 | 33 | 52 | 14 | 33 | 7 | 19 | 20 | 9 | 4 | 9 | 9 | 20 | 8 |
Swell 3 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 8 | N 12 | ENE 10 | ENE 10 | ENE 10 | SSE 13 | ENE 10 | ENE 10 | NE 7 | ENE 10 | S 18 | ENE 10 | ENE 9 | E 9 | NE 6 | NE 5 | S 17 | E 9 |
| kJ | 17 | 16 | 15 | 7 | 3 | 34 | 33 | 33 | 32 | 19 | 19 | 11 | 19 | 7 | 18 | 8 | 7 | 5 | 1 | 22 | 2 |
Wind waves Height (m) Direction Period (s) | — | NE 2 | NE 4 | NE 4 | NE 4 | WNW 2 | NW 3 | NNE 6 | NW 3 | WNW 3 | WSW 3 | SW 5 | — | NE 3 | NW 2 | NW 3 | WNW 3 | SW 2 | NNE 5 | ENE 3 | NE 5 |
| kJ | — | 1 | 6 | 3 | 26 | 1 | 3 | 29 | 2 | 2 | 2 | 38 | — | 8 | 1 | 1 | 7 | 1 | 3 | 4 | 60 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 18 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 4 | 0 | 4 | 127 | 1 | 1 | 1 | 1 | 1 | 173 | 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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