Surf Forecasts:
Narrabeen-South surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 1AM (local time) - 3ft (0.9m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 3.5ft (1.0m), 10s period, ESE swell with 175 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 1AM (local time) - 3ft (0.9m), 8s period with ESE 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 19) at 1AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.6m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Narrabeen-South in the next 16 days are 1.0m 10s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Sunday (Aug 23) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Best Surf | 1AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Most Powerful | 4PM (Wed 19th Aug) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for Narrabeen-South over the next 16 days.
The Lowdown
G’day, it’s Rusty.
Right, let’s be straight with you. The next week and a half at Narrabeen-South is going to be a real test of patience. We’re looking at a long, dry spell with barely anything worth paddling out for. The energy in the water is just weak – we’re talking combined readings mostly in the low hundreds, like 186 to 239, which is pretty ordinary for this stretch of sand.
The first standout doesn’t come until Sunday the 23rd. That morning, the ocean finally cleans up. We’ve got a glassy surface, a light NW air, and a south swell pushing through at 3ft with a 9-second period. The combined energy jumps to 217. It’s not huge, but it’s clean, and after all that chop, clean is everything. That’s the one to get out for early.
Then the real story starts to brew for the tail end of the window. Friday the 28th is when the ocean wakes up. Morning brings a proper SSW groundswell – 5ft at a 12-second period. That’s long-period, so it’ll have some push, and with the WSW offshore breeze, the sets will be lined up and clean. The energy is strong at 886. This is the first real highlight, and it’s a good one for the advanced crew.
Saturday the 29th afternoon is the true standout of the entire run. A solid SE swell rolls in at 7ft, period at 10 seconds, with a clean SW offshore wind. The combined energy is a massive 1295. This is proper, powerful surf. It’s big enough to get challenging – over 6ft, so it’s for experienced surfers only. The break will be holding its shape, but this is not a day for the faint-hearted.
It does get bigger after that, but it gets messier. Sunday the 30th sees an 8ft E swell with strong offshore winds, but the period drops to 7 seconds, which means it’ll be crumbly and hard to paddle into. The energy is huge – over 1000 – but the quality won’t match. Then Monday the 31st is just too much. An 12ft ESE swell with a long 11-second period will be draining and violent at this beach. It’s a definite expert-only, and honestly, it might be too big even for them here. The forecast says the wind is okay, but the size is the problem.
After that, the swell stays solid, over 7ft, but the combination of wind and size is tricky. The morning of Tuesday the 1st of September looks the cleanest of that last run, with a 7ft ESE swell and an offshore breeze, but the energy is still huge. It’s all about picking your window and being very, very careful. Paddling out will be a mission, but the waves will have some serious power.
Keep it simple, keep it safe.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue night. Warm (max 20°C on Thu morning, min 14°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Fri afternoon. Very mild (max 19°C on Fri morning, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | ESE 7 | ESE 7 | ESE 8 | ESE 10 | ESE 10 | SE 9 | ESE 8 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | S 5 | S 9 | SSE 8 | S 10 | S 10 | S 10 | S 10 |
Wave Graph | |||||||||||||||||||||
114 | 96 | 104 | 80 | 175 | 81 | 58 | 68 | 64 | 57 | 33 | 16 | 9 | 18 | 16 | 113 | 94 | 161 | 156 | 121 | 116 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | glassy | on | cross-on | cross-on | on | cross-off | off | cross-off | cross | cross-off | cross | glassy | glassy | on | cross-on | cross | cross-on | cross-off |
High Tide | 12:06PM1.33m | 00:16AM1.06m | 12:54PM1.30m | 1:11AM0.94m | 1:50PM1.27m | 2:23AM0.87m | 2:55PM1.26m | 3:45AM0.85m | 4:00PM1.28m | 4:56AM0.88m | 4:57PM1.33m | 5:48AM0.93m | 5:45PM1.40m | ||||||||
Low Tide | 6:28PM0.43m | 6:14AM0.39m | 7:33PM0.49m | 6:56AM0.47m | 8:49PM0.51m | 7:52AM0.53m | 10:06PM0.50m | 9:00AM0.56m | 11:09PM0.45m | 10:09AM0.54m | 11:58PM0.38m | 11:07AM0.50m | 00:37AM0.31m | ||||||||
6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | |
— | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | 2 | 2 | — | — | 1 | — | — | — | — | — | 5 |
Temp °C | 16 | 16 | 16 | 17 | 16 | 16 | 20 | 20 | 19 | 19 | 17 | 15 | 18 | 16 | 16 | 16 | 16 | 16 | 20 | 18 | 16 |
Feels °C | 13 | 13 | 14 | 15 | 12 | 14 | 17 | 17 | 16 | 17 | 16 | 13 | 17 | 13 | 16 | 15 | 13 | 15 | 18 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | S 11 | ESE 7 | ESE 8 | ESE 10 | ESE 10 | SE 9 | ENE 5 | E 6 | ENE 6 | ENE 6 | ESE 7 | NE 6 | NE 6 | NE 6 | S 5 | S 9 | SSE 8 | S 10 | S 10 | S 10 | S 10 |
57 | 96 | 104 | 80 | 175 | 81 | 25 | 49 | 64 | 57 | 5 | 16 | 9 | 18 | 16 | 113 | 94 | 161 | 156 | 121 | 116 | |
Swell 2 Height (m) Direction Period (s) | E 9 | S 11 | ESE 11 | ENE 6 | S 8 | E 12 | ESE 8 | E 10 | E 10 | S 11 | S 11 | S 10 | S 4 | S 8 | NE 6 | SE 5 | S 12 | NE 8 | ENE 8 | S 16 | ENE 9 |
6 | 56 | 100 | 24 | 10 | 3 | 58 | 2 | 2 | 2 | 2 | 8 | 1 | 6 | 9 | 25 | 77 | 16 | 33 | 20 | 30 | |
Swell 3 Height (m) Direction Period (s) | SE 15 | ESE 14 | S 10 | SE 7 | E 9 | — | E 11 | S 13 | S 12 | S 11 | E 10 | SE 7 | S 9 | E 9 | S 8 | S 16 | ENE 9 | E 14 | E 13 | E 13 | ENE 4 |
9 | 61 | 46 | 43 | 6 | — | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 6 | 79 | 30 | 4 | 3 | 3 | 7 | |
Wind waves Height (m) Direction Period (s) | ESE 7 | — | — | — | NE 3 | NE 5 | NE 5 | ENE 6 | — | WNW 2 | ENE 6 | SSW 2 | — | S 4 | — | — | NE 9 | ENE 4 | — | ENE 9 | — |
114 | — | — | — | 5 | 60 | 25 | 68 | — | 1 | 33 | 1 | — | 1 | — | — | 38 | 9 | — | 67 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 37 | 0 | 0 | 380 | 1 | 1 | 9 | 0 | 0 | 3 | 230 | 278 | 273 | 19 | 0 | 37 | 2 | 2 | 37 | 4 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











