Surf Forecasts:
Narrabeen-South surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 15 Aug, 10PM (local time) - 4.5ft (1.4m), 7s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 1AM (local time) - 3.5ft (1.0m), 11s period, S swell with 224 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 10PM (local time) - 4.5ft (1.4m), 7s period with S 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 Saturday (Aug 15) at 10PM. The primary swell is predicted to be 1.4m and 7s period with a secondary swell of 0.4m and 18s. Another secondary swell of 0.3m and 10s is also forecast. 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 1.0m 11s and forecast to arrive on Monday (Aug 17) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Saturday (Aug 22) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 15th Aug) | 4.5ft (1.4m) 7s |
| Best Surf | 10PM (Sat 15th Aug) | 4.5ft (1.4m) 7s |
| Most Powerful | 1AM (Mon 17th Aug) | 3.5ft (1.0m) 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 Narrabeen-South has cookin' over the next couple of weeks.
First up, the water temp is sitting at 62°F, which is a bit colder than normal for this time of year, so don't be shy with the thick rubber.
We're looking at a pretty slow start. The first couple of days are a write-off – rain showers and messy winds with weak, short-period swell. The energy is low, with combined swell energy reading only 353 on Saturday the 15th, and it doesn't get much better until that second week. Monday the 17th and Tuesday the 18th are a real struggle, with tiny, wind-affected surf and poor conditions. You'll be staring at a flat lake, not a wave. That stretch of no-good surf runs from now right through to the morning of Sunday the 23rd.
Now, late Sunday the 23rd morning, things finally wake up. We get a solid pulse from the south, 4ft at 12 seconds, cranking the combined swell energy right up to 511. The wind is a clean, cross-offshore breeze from the WSW. This is the standout for the whole period – the best on offer. It’s an exposed break, so that S swell will hit it nicely, and with those light winds, it’ll be clean. Keep in mind, it's an advanced wave, and it can get crowded often, so get in early.
After that little burst, it fades out again. The rest of that week is just small, weak swell with onshore winds messing it up, until we hit the deep end of the forecast. Around Wednesday the 26th, the swell absolutely explodes, but it’s way too big for this break – we’re talking 10ft to 18ft. The combined swell energy hits a massive 16044 by Friday the 28th morning. That’s an extreme, expert-only situation. The wind is offshore or glassy, so it'll look incredible, but you'd be a fool to paddle out unless you’ve got a death wish and a big gun.
Bottom line: if you can surf advanced, your best shot is that Sunday the 23rd morning session. The rest is either flat, ordinary, or out of control big.
Stay safe out there.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sat night. Very mild (max 16°C on Sat afternoon, min 12°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Warm (max 20°C on Fri morning, min 13°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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) | S 8 | S 7 | S 18 | SSE 7 | S 11 | S 9 | ESE 7 | ESE 6 | S 11 | ESE 7 | ESE 7 | ESE 6 | ESE 10 | ESE 7 | E 7 | ENE 7 | NE 6 | ENE 7 | ENE 7 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 273 | 150 | 170 | 192 | 224 | 111 | 91 | 96 | 82 | 70 | 127 | 80 | 74 | 114 | 92 | 66 | 156 | 111 | 91 | 88 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross | cross-off | cross | cross-on | cross | cross-on | cross-on | cross | on | cross-off | cross-on | cross-off | cross-on | on | cross | cross | cross | cross |
High Tide | 10:03PM1.52m | 10:41AM1.35m | 10:45PM1.37m | 11:22AM1.35m | 11:29PM1.21m | 12:06PM1.33m | 00:16AM1.06m | 12:54PM1.30m | 1:11AM0.94m | 1:50PM1.27m | 2:23AM0.87m | 2:55PM1.26m | 3:45AM0.85m | |||||||
Low Tide | 4:28AM0.11m | 4:40PM0.29m | 5:02AM0.20m | 5:32PM0.36m | 5:37AM0.30m | 6:28PM0.43m | 6:14AM0.39m | 7:33PM0.49m | 6:56AM0.47m | 8:49PM0.51m | 7:52AM0.53m | 10:06PM0.50m | ||||||||
 |  | |  | | | | | | | |  | | | |  |  | | |  | |
 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — |
 | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — |
mm | 1 | 3 | 1 | — | 2 | 3 | 4 | 6 | 1 | — | 5 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 16 | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 16 | 16 | 15 | 16 | 16 | 16 | 18 | 17 | 16 | 20 | 20 | 15 |
Feels °C | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 13 | 14 | 15 | 16 | 11 |
Swell 1 Height (m) Direction Period (s) | S 19 | S 17 | S 9 | SSE 7 | S 11 | ESE 7 | S 9 | S 8 | ESE 6 | ESE 7 | SE 7 | ESE 6 | ESE 6 | ESE 7 | E 7 | ESE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 8 |
| kJ | 61 | 95 | 45 | 192 | 224 | 83 | 76 | 51 | 75 | 70 | 105 | 75 | 72 | 114 | 92 | 36 | 110 | 111 | 91 | 88 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | S 18 | S 14 | ESE 6 | S 9 | ENE 10 | S 12 | S 11 | S 11 | ESE 11 | ESE 10 | ESE 10 | — | S 8 | S 13 | S 11 | S 12 | S 11 | S 10 |
| kJ | 18 | 19 | 150 | 36 | 51 | 111 | 18 | 24 | 82 | 55 | 100 | 80 | 74 | — | 5 | 3 | 2 | 11 | 9 | 2 |
Swell 3 Height (m) Direction Period (s) | E 7 | SE 7 | ENE 10 | S 18 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | SE 10 | ESE 13 | S 8 | S 9 | S 8 | — | E 11 | — | S 13 | — | SE 7 | SE 7 |
| kJ | 1 | 2 | 20 | 57 | 10 | 10 | 18 | 17 | 16 | 69 | 23 | 25 | 19 | — | 3 | — | 3 | — | 2 | 2 |
Wind waves Height (m) Direction Period (s) | S 8 | S 7 | SE 6 | — | — | — | ESE 7 | ESE 6 | — | — | ESE 7 | — | — | — | — | ENE 7 | NE 6 | NNW 3 | NNW 4 | WNW 3 |
| kJ | 273 | 150 | 170 | — | — | — | 91 | 96 | — | — | 127 | — | — | — | — | 66 | 156 | 3 | 13 | 8 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 27 | 0 | 113 | 86 | 4 | 5 | 4 | 21 | 37 | 55 | 9 | 0 | 171 | 0 | 1 | 37 | 1 | 1 | 1 | 1 |
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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