Surf Forecasts:
Narrabeen-South surf forecast from 11 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 1AM (local time) - 10ft (3.0m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 10PM (local time) - 13ft (4.0m), 10s period, S swell with 3,082 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 10PM (local time) - 4.5ft (1.4m), 10s period with SSE 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 Friday (Sep 11) at 10PM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.2m and 19s. 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 4.0m 10s and forecast to arrive on Wednesday (Sep 16) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Sep 14) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 11th Sep) | 4.5ft (1.4m) 10s |
| Best Surf | 1AM (Wed 16th Sep) | 10ft (3.0m) 8s |
| Most Powerful | 10PM (Wed 16th Sep) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Narrabeen-South over the next 16 days.
The Lowdown
Alright, Rusty here, takin' a look at the next 16 days for us. We got some swell on the way, but don't get too excited right off the bat – it’s gonna be a bit of a slow burner.
We start on Friday morning, September 11th, with a solid 6ft south swell, period at 10 seconds. Combined energy is moderate (669), and we got a light SSW offshore wind. Water temp is 64°, right about average for now. Saturday morning, September 12th, is the real gem: clean lines from a 4ft south swell with a 12-second period, and it's dead glassy. That’s the standout of the early run. The energy is moderate (621), and conditions will be perfect for an advanced surfer. Expect crowds at Narrabeen-South though – it gets busy. Swell direction is S, bang on for the SE exposure.
That Saturday morning glass-off is the best of the first week. Sunday through Tuesday, it drops right off – tiny, weak pulses and wind on it. You're lookin' at a solid 3 to 4 day gap of poor waves.
Now, hold on. Wednesday, September 16th, a big pulse hits. We're talkin' 12ft to 13ft south swell by afternoon, period around 9-10 seconds, with strong cross-offshore wind. The combined energy is massive – (2079 to 3093). This is serious. Over 8ft, this is for experts only. The data says the wind and tide are favorable, but it also says the swell is predicted to be *too big* for this break. The size is dangerous, and the short period will make it a heavy shorebreak. This looks more like a kitesurfing day than paddlin'.
Thursday, September 17th, is still big – 10ft in the morning (1485 energy), still too much. It drops to 8ft by afternoon, still a handful.
Friday, September 18th morning offers a tiny 2ft south swell, but with a very long 19-second period and glassy conditions. Energy is moderate (665). That long period makes it a proper groundswell, but at this size, it might break too straight for the beach. Best for the points or rip bowl. Afternoon gets blown out.
Saturday and Sunday, 19th and 20th, are both small and crummy.
Then, Wednesday, September 23rd, we get another big pulse: 12ft south swell (2657 energy). Again, onshore wind and too big for the break. Expert only, and risky.
Thursday, September 24th morning has a 6ft SSE swell, 8-second period, and flat calm conditions. Energy is moderate (452). Clean, but short period won't have great shape.
Rest of the run is small.
Bottom line: For the average surfer, Saturday morning, September 12th is your only call. For the chargers, the 16th is the one, but be careful. The long-range stuff (23rd) is a maybe.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun morning, min 13°C on Fri morning). Winds increasing (calm on Sat morning, fresh winds from the NNE by Sun afternoon). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Tue night. Warm (max 22°C on Mon morning, min 10°C on Tue night). Winds increasing (light winds from the NNW on Mon night, strong winds from the S by Wed morning). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 10 | S 10 | S 10 | S 12 | SSE 11 | S 10 | S 10 | S 11 | S 12 | S 11 | NE 5 | NE 7 | NE 6 | NE 6 | S 8 | S 9 | S 10 | S 10 | S 9 | SSE 9 | SSE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 627 | 489 | 332 | 418 | 297 | 154 | 177 | 181 | 175 | 123 | 107 | 230 | 58 | 31 | 1355 | 2035 | 3077 | 2783 | 1476 | 841 | 428 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-off | glassy | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross | off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 8:15PM1.57m | 8:45AM1.43m | 8:56PM1.48m | 9:22AM1.46m | 9:36PM1.36m | 9:58AM1.46m | 10:16PM1.23m | 10:35AM1.43m | 10:58PM1.10m | 11:15AM1.38m | 11:44PM0.99m | 12:01PM1.32m | 00:40AM0.91m | ||||||||
Low Tide | 2:02PM0.18m | 2:36AM0.07m | 2:47PM0.17m | 3:09AM0.12m | 3:32PM0.19m | 3:41AM0.20m | 4:17PM0.24m | 4:12AM0.29m | 5:04PM0.30m | 4:45AM0.38m | 5:54PM0.38m | 5:21AM0.46m | 6:54PM0.44m | ||||||||
 |  |  | | | | | | | | | | | |  |  | | | | |  | |
 | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — |
 | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 1 | — | 3 | — | — | — |
Temp °C | 15 | 15 | 15 | 17 | 17 | 16 | 18 | 18 | 17 | 22 | 22 | 20 | 20 | 17 | 13 | 13 | 14 | 13 | 13 | 13 | 14 |
Feels °C | 14 | 13 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 18 | 19 | 17 | 17 | 15 | 6 | 4 | 5 | 5 | 6 | 8 | 11 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 12 | SSE 11 | S 10 | S 10 | S 11 | NE 6 | NE 6 | S 11 | NE 7 | NE 6 | NE 6 | NE 6 | ENE 14 | ENE 13 | ENE 13 | S 18 | S 17 | SSE 8 |
| kJ | 627 | 489 | 332 | 418 | 297 | 154 | 177 | 181 | 151 | 54 | 81 | 155 | 58 | 31 | 6 | 20 | 16 | 17 | 6 | 23 | 428 |
Swell 2 Height (m) Direction Period (s) | ENE 15 | ENE 14 | S 19 | S 19 | S 17 | S 20 | ENE 5 | ENE 13 | S 12 | S 11 | ENE 13 | S 10 | S 10 | S 9 | ENE 13 | S 18 | — | — | E 13 | E 13 | S 19 |
| kJ | 21 | 18 | 61 | 184 | 142 | 121 | 14 | 17 | 175 | 123 | 16 | 47 | 28 | 14 | 18 | 24 | — | — | 3 | 3 | 7 |
Swell 3 Height (m) Direction Period (s) | ENE 15 | E 10 | ENE 13 | ENE 14 | ENE 14 | ENE 13 | S 17 | ENE 13 | ENE 13 | ENE 13 | — | ENE 12 | NE 13 | ENE 13 | — | — | — | — | — | — | E 13 |
| kJ | 21 | 2 | 18 | 19 | 19 | 16 | 50 | 17 | 17 | 17 | — | 15 | 6 | 17 | — | — | — | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 2 | NE 4 | NE 4 | NE 4 | NNE 6 | — | NE 5 | NE 7 | — | SSE 4 | S 8 | S 9 | S 10 | S 10 | S 9 | SSE 9 | — |
| kJ | — | — | — | — | 1 | 17 | 21 | 45 | 216 | — | 107 | 230 | — | 34 | 1355 | 2035 | 3077 | 2783 | 1476 | 841 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 37 | 0 | 0 | 445 | 2 | 2 | 511 | 1 | 1 | 1 | 1 | 0 | 113 | 160 | 834 | 732 | 193 | 113 | 160 | 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.
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