Surf Forecasts:
Narrabeen-South surf forecast from 30 Aug 2026:
- Best quality surf: Sunday 6 Sep, 7AM (local time) - 5.5ft (1.7m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 1AM (local time) - 5.5ft (1.7m), 13s period, S swell with 900 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 4AM (local time) - 3.5ft (1.1m), 9s 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 Monday (Aug 31) at 4AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.5m and 17s. 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 1.7m 13s 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 1.1m 5s period and expected on Thursday (Sep 03) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Mon 31st Aug) | 3.5ft (1.1m) 9s |
| Best Surf | 7AM (Sun 6th Sep) | 5.5ft (1.7m) 12s |
| Most Powerful | 1AM (Mon 7th Sep) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Narrabeen-South over the next 16 days.
The Lowdown
G’day, Rusty here. Looks like we’ve got a bit of a slow start, but there’s a couple of real gems coming through for Narrabeen-South if you’re patient.
The first decent surf window is a bit of a tease. Monday the 31st of August, the morning session is looking sweet with a 3ft south swell, glassy conditions thanks to a light NNE breeze, and solid wave energy (271). It’s a clean start, but the afternoon gets blown out by a NE wind. The water temp is about average for this time of year, so nothing weird there.
Then we hit a bit of a dry spell. From Monday afternoon all the way through to Saturday the 5th of September, it’s pretty ordinary. Mostly small, messy, or onshore winds. The swell dips and the winds are all over the shop. There’s a brief moment Wednesday morning with a clean 2ft SSW swell, but it’s tiny. Not worth paddling out for.
Now, here’s the standout. Sunday the 6th of September morning is the pick of the first week. We’ve got a solid 6ft south swell with a period of 10 seconds, and the wind is glassy from the ESE. It’s clean, the wave energy is pumping (613), and the break is very consistent. This is your morning. It’s a bit too big for beginners but good for the rest of us. Crowds are likely at this spot, so get in early.
Monday the 7th morning still holds some size at 5ft south swell with a longer 12-second period, but the wind is cross-on from the north, making it a bit lumpy. The afternoon is similar. Not poor, but not the standout.
The second week gets interesting. Wednesday the 9th of September morning sees a massive 12ft south swell with a period of 11 seconds and very strong wave energy (2731). The wind is cross-off from the SSE, so the break is clean. But honestly, that’s too big for most of us. This is for experts only. The afternoon drops to 8ft but picks up a fresh breeze, so it’s still heavy.
There’s a nice little window late in the run. Sunday the 13th of September morning and afternoon both have a clean 3ft south swell (11-second period) with light cross-off winds. It’s small but clean, and the wave energy is moderate (248 and 273). A good option for a longboard or a fun session.
The final highlight is Tuesday the 15th of September morning. A 8ft south swell with a short 7-second period, but the wind is glassy from the NNE, and the wave energy is very strong (623). This is for the more experienced crew, but it’s going to be a clean, powerful morning.
So, if you’re looking for the best of the best, hit Sunday the 6th of September morning for the cleanest combo of size and glass. Or, if you’re an expert, Wednesday the 9th of September morning is a big, clean beast. Tuesday the 15th morning is also a solid, glassy option for the more advanced.
Stay safe, and keep an eye on the wind.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 13°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sat morning, min 13°C on Thu night). Winds increasing (light winds from the N on Fri morning, fresh winds from the NW by Sat morning). | ||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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 10 | S 8 | S 9 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | SSE 10 | S 10 | S 8 | S 10 | S 10 | S 10 | S 10 |
Wave Graph | |||||||||||||||||||
219 | 142 | 126 | 134 | 192 | 182 | 133 | 106 | 76 | 50 | 52 | 35 | 33 | 174 | 71 | 102 | 71 | 48 | 48 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | on | cross-on | cross-on | cross | cross-on | cross-off | cross-off | cross | off | off | cross-off | cross-on | on | cross-on | cross | cross-off | off |
High Tide | 10:02AM1.40m | 10:09PM1.35m | 10:42AM1.42m | 10:55PM1.24m | 11:27AM1.43m | 11:48PM1.13m | 12:21PM1.42m | 00:54AM1.02m | 1:26PM1.41m | 2:17AM0.95m | 2:40PM1.43m | 3:45AM0.95m | |||||||
Low Tide | 3:47AM0.14m | 4:07PM0.26m | 4:21AM0.18m | 4:57PM0.29m | 4:59AM0.25m | 5:54PM0.32m | 5:44AM0.33m | 7:03PM0.35m | 6:39AM0.40m | 8:24PM0.36m | 7:48AM0.46m | 9:47PM0.31m | |||||||
— | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | |
— | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 17 | 16 | 16 | 23 | 26 | 20 | 26 | 26 | 21 | 23 | 23 | 17 | 19 | 17 | 19 | 29 | 26 | 18 |
Feels °C | 15 | 14 | 13 | 15 | 19 | 23 | 17 | 23 | 23 | 18 | 18 | 19 | 13 | 15 | 12 | 14 | 23 | 20 | 14 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 8 | S 9 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | SSE 10 | S 10 | S 8 | NE 5 | S 10 | S 10 | S 10 |
219 | 142 | 126 | 134 | 192 | 182 | 133 | 106 | 76 | 50 | 52 | 35 | 33 | 174 | 71 | 25 | 71 | 48 | 48 | |
Swell 2 Height (m) Direction Period (s) | S 17 | S 15 | S 16 | S 14 | ENE 11 | ENE 11 | NE 6 | NE 6 | NE 6 | ENE 10 | NE 6 | NE 6 | NE 6 | ENE 10 | S 11 | S 10 | ENE 9 | NE 5 | NE 6 |
148 | 112 | 78 | 95 | 23 | 37 | 33 | 16 | 11 | 33 | 16 | 14 | 7 | 19 | 10 | 102 | 8 | 10 | 5 | |
Swell 3 Height (m) Direction Period (s) | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | N 12 | ENE 10 | ENE 10 | ENE 10 | NE 5 | ENE 10 | ENE 10 | ENE 10 | NE 7 | S 18 | ENE 10 | — | E 9 | E 11 |
24 | 17 | 16 | 15 | 7 | 3 | 34 | 33 | 33 | 5 | 19 | 19 | 19 | 7 | 25 | 18 | — | 7 | 9 | |
Wind waves Height (m) Direction Period (s) | — | — | NE 3 | NE 4 | NE 4 | NE 4 | NW 2 | NW 3 | NNE 6 | — | WNW 2 | SSW 6 | SW 5 | WSW 4 | NE 4 | — | NNE 5 | W 4 | SW 3 |
— | — | 2 | 7 | 3 | 29 | 1 | 1 | 29 | — | 1 | 7 | 32 | 16 | 19 | — | 27 | 28 | 7 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 20 | 2 | 2 | 1 | 1 | 2 | 0 | 2 | 0 | 0 | 0 | 2 | 113 | 15 | 21 | 171 | 0 |
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.











