Surf Forecasts:
Narrabeen-South surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 15 Aug, 7PM (local time) - 5ft (1.5m), 7s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 22 Aug, 4PM (local time) - 6.5ft (2.0m), 7s period, S swell with 407 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 7PM (local time) - 5ft (1.5m), 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 7PM. The primary swell is predicted to be 1.5m 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 2.0m 7s and forecast to arrive on Saturday (Aug 22) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Saturday (Aug 22) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sat 15th Aug) | 5ft (1.5m) 7s |
| Best Surf | 7PM (Sat 15th Aug) | 5ft (1.5m) 7s |
| Most Powerful | 4PM (Sat 22nd Aug) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Narrabeen-South over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s break it down. The next couple of weeks are a mixed bag – a few clean windows, but plenty of flat or blown-out junk in between. The first real call is this Saturday morning, so don’t hold your breath before that.
Saturday morning (August 15) is our first genuine look. Narrabeen-South is the spot. We’ve got a 3.9ft south swell, with a 9-second period – not huge, but there’s a bit of push. The wind is light offshore from the SSW, so it’s going to be clean, proper clean. The water’s at 62.1°F, which is a bit colder than usual for this time of year, about 2.3°F off the mark. That’s noticeable on the walk out, but worth it for the surf. The combined swell energy is 313 – moderate, but the quality is there. This is the pick of the early stretch. The south swell direction matches the optimum for this bank, so expect some nice lines. Crowds can be an issue here, especially on a Saturday morning, so get in early.
Saturday afternoon, the swell bumps to 5.2ft but the wind swings cross-off from the SSE and the period drops to 8 seconds. Not terrible, but the tide and the push make it a bit scrappy. I’d call that marginal at best.
Sunday morning (August 16) is flat. 1.6ft of south swell with a 17-second period – that’s a long-period groundswell, but there’s just not enough size. The cross-shore SE wind will chop what little there is. Not worth the look. Sunday afternoon sees a slight bump to 3.6ft but the period tanks to 7 seconds and it’s cross-shore, so it’s poor.
Monday (August 17) is a write-off. Small, cross-onshore, and choppy. Same with Tuesday (August 18) – the swell drops to 2.0ft, then 1.3ft, with poor wind. That’s a solid stretch of nothing, about three days of flat or messy conditions.
Wednesday morning (August 19) pops up again. 3.9ft of ESE swell, 7-second period, but the wind is offshore from the W – light, 3 mph. That makes it clean, and the energy reading is 241, which is moderate. It’s a short-period swell, so it won’t be super powerful, but the surface will be smooth and it’s a decent little session before the wind turns onshore in the arvo. Wednesday afternoon is done – NE wind straight onshore.
Thursday (August 20) and Friday (August 21) are poor. Swell drops below 3ft, wind gets messy, and the energy weakens to under 100. Not worth the paddle.
Saturday afternoon (August 22) is interesting, but not for the right reasons. The swell jumps to 6.6ft from the S, but the period is only 7 seconds and the wind is a fresh S cross-off at 22 mph. It’s clean, but that’s a short-period, stormy swell – lumpy and closed out. The energy is 430, so there’s push, but it’s more of a washing machine than a wave pool. For a beach break like this, it’s looking more like a kite-surfing day than a paddle-surfing day.
Sunday morning (August 23) is a return to form. 3.6ft of south swell, 8-second period, light WSW cross-off wind at 6 mph. Clean, easy, and surfable. Energy is 261 – moderate. This is a solid morning, not a standout but a good tune-up. The afternoon brings onshore ENE wind, so get your fill early.
The middle of the week – Monday and Tuesday (August 24-25) – has a bit on offer. Monday morning is 2.6ft with a light W cross-off, clean but small. Tuesday morning is the better bet: swell jumps to 6.9ft from the SSE, period is 7 seconds, and the wind is a light SSE cross-off at 9 mph. That’s clean, and the energy is 421, which is strong. But that short period means it will be a bit wild. It’s rideable, but you’ll need your wits about you.
Then Wednesday through Friday (August 26-28) gets messy. Onshore winds, swell climbing to 7.9ft and then 9.8ft by Thursday. That’s big, blown-out, and only for experts. Energy readings are high – 848, 890, even 1772 – but with the onshore wind and short periods, it’s not good surf. It’s a lot of water moving, but it’s ugly.
Saturday and Sunday (August 29-30)
Short Range ForecastHeavy rain (total 25mm), heaviest during Mon night. Very mild (max 16°C on Sat morning, min 13°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Very mild (max 19°C on Thu morning, min 13°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | S 9 | S 8 | S 7 | S 17 | S 7 | S 11 | S 10 | ESE 7 | ESE 7 | S 11 | ESE 7 | ESE 7 | ESE 7 | ESE 10 | ESE 9 | ESE 7 | ESE 6 | ENE 6 | ENE 6 | E 6 | ENE 6 |
Wave Graph | |||||||||||||||||||||
230 | 310 | 150 | 148 | 131 | 182 | 116 | 93 | 78 | 82 | 71 | 105 | 131 | 218 | 197 | 79 | 70 | 66 | 51 | 27 | 13 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | cross | cross | cross-off | cross-on | cross | cross-on | cross-on | cross-on | on | cross-off | on | cross | cross-on | on | glassy | cross | cross | cross-off |
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 | 3:51PM0.23m | 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 | — | — | 6:33 | — | — | 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 | 2 | 1 | 3 | 1 | — | 2 | 4 | 3 | 9 | — | — | 2 | — | — | — | — | — | — | 2 | 1 | — |
Temp °C | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 15 | 15 | 16 | 16 | 16 | 14 | 15 | 15 | 19 | 18 | 18 | 14 | 15 | 14 |
Feels °C | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 14 | 16 | 14 | 17 | 11 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 19 | S 17 | S 6 | S 7 | S 11 | S 10 | S 9 | ESE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 10 | ESE 9 | ESE 7 | ESE 6 | ENE 6 | ENE 6 | E 6 | ENE 6 |
230 | 61 | 95 | 83 | 131 | 182 | 116 | 76 | 78 | 80 | 68 | 105 | 131 | 218 | 197 | 79 | 70 | 66 | 51 | 27 | 13 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 10 | ENE 10 | S 17 | S 18 | ENE 10 | ENE 10 | ENE 9 | S 8 | S 11 | S 11 | ESE 12 | ESE 10 | S 7 | — | — | — | E 10 | S 12 | S 11 | N 4 |
17 | 18 | 19 | 148 | 55 | 10 | 10 | 17 | 35 | 82 | 56 | 104 | 110 | 26 | — | — | — | 2 | 3 | 2 | 3 | |
Swell 3 Height (m) Direction Period (s) | S 19 | E 7 | SE 7 | ENE 10 | ENE 10 | S 18 | ENE 10 | SSW 13 | S 12 | E 9 | ESE 14 | S 10 | — | — | — | — | — | S 12 | E 10 | E 10 | NE 8 |
66 | 1 | 2 | 20 | 20 | 24 | 10 | 53 | 24 | 7 | 71 | 46 | — | — | — | — | — | 3 | 2 | 2 | 3 | |
Wind waves Height (m) Direction Period (s) | — | S 8 | S 7 | ESE 6 | ESE 6 | SE 6 | ESE 7 | ESE 7 | — | — | — | — | — | — | — | — | NE 3 | NNW 3 | NW 3 | N 4 | WNW 3 |
— | 310 | 150 | 90 | 71 | 88 | 93 | 93 | — | — | — | — | — | — | — | — | 2 | 1 | 2 | 14 | 4 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 4 | 0 | 4 | 121 | 0 | 40 | 4 | 21 | 21 | 55 | 7 | 0 | 9 | 1 | 1 | 73 | 0 | 1 | 56 | 188 |
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.











