Surf Forecasts:
Narrabeen-South surf forecast from 25 Aug 2026:
- Best quality surf: Thursday 27 Aug, 7AM (local time) - 6ft (1.9m), 9s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 4AM (local time) - 5ft (1.6m), 11s period, SSE swell with 575 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 4AM (local time) - 4ft (1.2m), 8s period with NE swell.
Best Forecast Surf Conditions for Narrabeen-South this week:
The surf forecast for Narrabeen-South over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 4AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.2m and 16s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Narrabeen-South in the next 16 days are 1.6m 11s and forecast to arrive on Saturday (Aug 29) at 4AM. 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 6s period and expected on Wednesday (Aug 26) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 26th Aug) | 4ft (1.2m) 8s |
| Best Surf | 7AM (Thu 27th Aug) | 6ft (1.9m) 9s |
| Most Powerful | 4AM (Sat 29th Aug) | 5ft (1.6m) 11s |
Table - best surf conditions forecast for Narrabeen-South over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's coming our way at Narrabeen-South.
We’ve got a bit of a slow start with some wind-affected junk on Tuesday and Wednesday, but hang tight because things turn around big time from Thursday, August the 27th. The real standout window kicks off Thursday morning. The water temp is sitting around 63°F, so pretty average for this time of year, nothing to write home about.
Thursday the 27th looks like the best day of the whole run. A solid south swell pulses in at 6ft, a clean 9-second period, and with a light cross-offshore breeze, it’s shaping up to be absolutely pumping. The combined energy is a strong 641, so there’s plenty of push. This one is for the advanced crew though – 6ft is pushing into expert territory. If you're not confident, maybe sit this one out.
Friday the 28th is a close second. We’ve got a 5ft swell from the SSE, swinging to a longer 11-second period in the morning. Early glassy conditions with a light WSW cross-off wind means it’ll be clean as a whistle. Combined energy is still a solid 641 in the morning. This is excellent surf for those who know what they're doing.
Saturday the 29th morning keeps the quality going – 5ft SSE swell, 10-second period, light SSW offshore wind, and clean conditions. Combined energy is 756, which is really solid. It’s a touch smaller, but dead clean. Sunday the 30th and Monday the 31st offer more clean surf, with Monday morning looking particularly sweet with glassy conditions and a 4ft south swell at 10 seconds.
Now, from Tuesday, September the 1st, the swell drops off significantly and we get into a long flat spell. The surf gets tiny, with waves barely 2ft for a few days, and a lot of onshore rubbish. That stretch from the 1st through to the 5th is dead quiet.
There’s a flicker of life again on Tuesday, September the 8th with a 6ft southerly swell and a clean cross-offshore wind, combined energy of 675, but it’s still a week and a half out, so keep an eye on it. Wednesday the 9th also shows a 5ft south swell with a moderate offshore wind, which could be a late highlight.
So to sum it up: Thursday the 27th is your absolute best bet for a proper session – solid size, clean, and powerful. Friday the 28th is right up there too. After that, a long flat spell, with a possible return to form around the 8th or 9th of September. Crowds are likely here at Narrabeen-South, so expect some company.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Tue afternoon. Very mild (max 17°C on Wed morning, min 12°C on Thu night). Winds decreasing (fresh winds from the S on Wed morning, calm by Thu night). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. Very mild (max 16°C on Sat morning, min 13°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 7 | NE 8 | NE 8 | NE 8 | S 7 | S 9 | S 9 | S 9 | SSE 11 | SSE 10 | SSE 9 | SSE 10 | S 10 | SSE 10 | S 9 | S 9 | S 17 | S 10 | S 10 | S 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 160 | 173 | 140 | 151 | 269 | 562 | 390 | 252 | 561 | 501 | 336 | 417 | 262 | 183 | 192 | 404 | 572 | 340 | 319 | 326 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | off | cross-on | glassy | cross-off | cross-off | cross-off | glassy | cross-on | cross-on |
High Tide | 6:27PM1.46m | 7:07AM1.07m | 7:04PM1.52m | 7:42AM1.15m | 7:40PM1.55m | 8:16AM1.22m | 8:16PM1.54m | 8:50AM1.29m | 8:51PM1.51m | 9:25AM1.35m | 9:29PM1.45m | 10:02AM1.40m | 10:09PM1.35m | |||||||
Low Tide | 1:12AM0.24m | 12:38PM0.38m | 1:44AM0.18m | 1:19PM0.32m | 2:14AM0.14m | 1:59PM0.28m | 2:44AM0.11m | 2:39PM0.26m | 3:15AM0.11m | 3:22PM0.25m | 3:47AM0.14m | 4:07PM0.26m | ||||||||
 |  |  | |  |  |  |  | | |  | | | |  | |  | | | | |
 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — |
 | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — |
mm | 8 | 7 | 5 | 1 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 16 | 15 | 15 | 14 | 14 | 16 | 15 | 15 | 16 | 15 | 14 | 15 | 15 | 14 | 16 | 16 | 15 |
Feels °C | 13 | 15 | 14 | 12 | 12 | 13 | 12 | 13 | 13 | 12 | 13 | 15 | 13 | 13 | 12 | 12 | 13 | 15 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 8 | NE 8 | NE 8 | ENE 8 | S 9 | S 9 | S 9 | SSE 11 | SSE 10 | ENE 8 | SSE 10 | S 10 | SSE 10 | S 9 | S 9 | S 8 | S 10 | S 10 | S 11 |
| kJ | 160 | 173 | 140 | 151 | 84 | 562 | 390 | 252 | 561 | 501 | 24 | 417 | 262 | 183 | 192 | 404 | 142 | 340 | 319 | 326 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 9 | — | S 11 | S 15 | NE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | S 11 | S 9 | SSE 11 | S 9 | SE 9 | ENE 9 | S 17 | S 16 | ENE 9 | ENE 9 |
| kJ | 29 | 15 | — | 9 | 5 | 62 | 40 | 68 | 44 | 36 | 21 | 311 | 214 | 106 | 86 | 31 | 572 | 243 | 16 | 16 |
Swell 3 Height (m) Direction Period (s) | S 16 | S 16 | — | — | — | S 15 | S 14 | S 14 | S 14 | SSW 13 | — | ENE 8 | ENE 8 | ENE 9 | ENE 9 | S 18 | ENE 10 | ENE 9 | S 16 | ENE 12 |
| kJ | 20 | 47 | — | — | — | 17 | 36 | 57 | 36 | 53 | — | 28 | 28 | 31 | 30 | 26 | 36 | 17 | 47 | 14 |
Wind waves Height (m) Direction Period (s) | N 3 | NW 3 | SSW 4 | S 6 | S 7 | — | — | — | — | S 4 | SSE 9 | — | — | — | — | — | — | — | ENE 2 | NE 4 |
| kJ | 7 | 3 | 18 | 181 | 269 | — | — | — | — | 6 | 336 | — | — | — | — | — | — | — | 1 | 12 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 9 | 1 | 4 | 86 | 0 | 0 | 20 | 1 | 0 | 4 | 0 | 0 | 20 | 0 | 0 | 8 | 0 | 0 | 20 | 2 |
Best forecast wave conditions in Sydney North Coast | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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Information about the Narrabeen-South Surf forecast
The above surf forecast table for Narrabeen-South provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Narrabeen-South can be found by selecting the local surf guide option on the grey menu. Our Narrabeen-South 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-South) 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-South 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-South is 3 km (2 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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