
Surf Forecasts:
Narrabeen-South surf forecast from 15 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, 1PM (local time) - 13ft (4.0m), 10s period, S swell with 2,948 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 1AM (local time) - 10ft (3.0m), 8s 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 Wednesday (Sep 16) at 1AM. The primary swell is predicted to be 3.0m and 8s period with a secondary swell of 0.3m and 6s. Another secondary swell of 0.2m and 13s 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 4.0m 10s and forecast to arrive on Wednesday (Sep 16) at 1PM. 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 Tuesday (Sep 15) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 16th Sep) | 10ft (3.0m) 8s |
| Best Surf | 1AM (Wed 16th Sep) | 10ft (3.0m) 8s |
| Most Powerful | 1PM (Wed 16th Sep) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Narrabeen-South over the next 16 days.
The Lowdown
Alright, mate. Rusty here. Let’s talk about what’s on the cards for Narrabeen-South.
Look, the next week or so is a bit of a mixed bag, but there’s a definite standout session for the crew who know what they’re doing. Don’t get too excited about the start, because it’s pretty flat and ordinary until we get a pulse of proper energy rolling in.
We kick off on Tuesday the 15th with tiny, weak waves. There’s a small 3ft NE swell pushing through but it’s only got 7 seconds of period behind it, so it’s gutless. Combined energy is only 110 (weak). The morning has a light cross-off breeze which keeps it clean, but honestly, it’s barely surfable. By the afternoon, the wind swings onshore and it’s a write-off.
Wednesday the 16th is where things get interesting, but not for the faint-hearted. A big southerly swell arrives, jumping to 12ft with a 10-second period. The combined energy is absolutely pumping at 2553 (very strong). This is too big for most, and only for experts. The wind is a solid cross-off, so it’ll be clean, but this is a serious step up. Definitely not for beginners. If you’re not an expert, stay on the beach for this one.
Thursday the 17th morning is your best bet in this whole run. The swell drops to a still-chunky 8ft from the south, period at 10 seconds, and the energy is still strong at 1321. The wind is offshore from the SSW at 9 mph. That’s clean, lined-up surf for experienced surfers. This is the standout. Afternoon turns ugly with a cross-onshore breeze chopping it up.
Friday the 18th and Saturday the 19th are on the fade. Swell drops below 5ft, and the winds are messy. Friday morning has a 5ft south swell but a light cross-on breeze, making it marginal. Saturday morning offers a tiny 3ft south swell with a cross-off breeze – clean but small. The energy is weak (257). Nothing to write home about.
Sunday the 20th is flat and glassy in the morning with a tiny 2ft south swell and no wind. Combined energy is just 85. It’s pretty but barely worth paddling out for.
Then there’s a gap of a few days of poor conditions until Tuesday the 22nd. That morning brings a solid 8ft south swell with 9-second period and a moderate 944 energy. The wind is a gentle cross-off, keeping it clean. That’s another good window for experienced surfers, but it’s not as good as Thursday the 17th.
The rest of the run into the end of the month is mostly messy, with onshore winds and smaller, short-period swells. The 27th (Sunday) morning shows a 5ft NE swell with a cross-off breeze and clean conditions, but the period is short (7 seconds) and energy is moderate at 505. It’s surfable but not a standout.
Bottom line: The clear winner is Thursday the 17th morning at Narrabeen-South. Solid 8ft south swell, offshore wind, clean, and only for advanced surfers. That’s the one to circle. The big 12ft pulse on Wednesday is for the hardcore only. The rest is either small, windy, or both.
Stay safe out there.
- Rusty
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 21°C on Tue morning, min 10°C on Wed night). Winds decreasing (strong winds from the S on Tue afternoon, light winds from the NW by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sat morning, min 16°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 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) | NE 7 | NE 7 | S 8 | S 10 | S 10 | S 11 | S 10 | S 9 | S 9 | S 9 | S 10 | S 9 | S 10 | S 10 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 7 |
Wave Graph | |||||||||||||||||||||
75 | 36 | 1298 | 2543 | 2541 | 2770 | 1290 | 690 | 452 | 388 | 260 | 173 | 158 | 113 | 87 | 60 | 41 | 18 | 29 | 431 | 408 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross-off | cross-on | on | cross-off | cross-off | cross-on | cross-off | glassy | on | cross-off | cross-off | cross | cross-off |
High Tide | 10:35AM1.43m | 10:58PM1.10m | 11:15AM1.38m | 11:44PM0.99m | 12:01PM1.32m | 00:40AM0.91m | 12:57PM1.26m | 1:54AM0.86m | 2:05PM1.23m | 3:19AM0.86m | 3:17PM1.24m | 4:28AM0.91m | 4:18PM1.28m | ||||||||
Low Tide | 5:04PM0.30m | 4:45AM0.38m | 5:54PM0.38m | 5:21AM0.46m | 6:54PM0.44m | 6:05AM0.54m | 8:06PM0.49m | 7:06AM0.59m | 9:23PM0.48m | 8:25AM0.61m | 10:27PM0.44m | 9:41AM0.58m | 11:15PM0.37m | ||||||||
5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:48 | — | — | 5:48 | — | — | 5:47 | — | — | |
— | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — | |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 21 | 17 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 19 | 17 | 17 | 25 | 23 | 22 | 25 | 23 | 23 | 17 | 16 | 16 |
Feels °C | 19 | 15 | 5 | 4 | 5 | 6 | 10 | 9 | 12 | 15 | 13 | 16 | 20 | 18 | 19 | 21 | 21 | 20 | 15 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | NE 6 | NE 12 | ENE 12 | NE 13 | S 10 | S 9 | S 9 | S 9 | S 10 | S 9 | S 10 | S 10 | S 9 | S 9 | S 9 | NE 4 | S 10 | S 9 | E 11 |
75 | 36 | 6 | 6 | 15 | 7 | 1290 | 690 | 452 | 388 | 260 | 173 | 158 | 113 | 87 | 60 | 41 | 6 | 29 | 431 | 2 | |
Swell 2 Height (m) Direction Period (s) | S 10 | S 9 | ENE 13 | E 15 | — | — | S 19 | S 19 | NE 13 | S 18 | S 18 | NE 4 | S 15 | S 15 | S 17 | S 16 | S 18 | S 10 | NE 4 | NE 5 | NE 11 |
29 | 14 | 18 | 4 | — | — | 28 | 7 | 7 | 106 | 216 | 13 | 42 | 42 | 22 | 20 | 26 | 18 | 3 | 1 | 5 | |
Swell 3 Height (m) Direction Period (s) | NE 13 | ENE 13 | S 16 | — | — | — | E 13 | E 13 | S 19 | E 12 | E 12 | S 15 | S 18 | S 18 | E 12 | NE 11 | E 11 | S 7 | S 15 | E 10 | — |
6 | 17 | 5 | — | — | — | 3 | 3 | 7 | 3 | 3 | 115 | 57 | 25 | 3 | 5 | 3 | 8 | 18 | 2 | — | |
Wind waves Height (m) Direction Period (s) | SSW 3 | SSE 4 | S 8 | S 10 | S 10 | S 11 | — | — | — | — | ESE 7 | — | WSW 4 | — | N 4 | — | ENE 3 | — | S 5 | — | S 7 |
1 | 18 | 1298 | 2543 | 2541 | 2770 | — | — | — | — | 35 | — | 5 | — | 2 | — | 4 | — | 39 | — | 408 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1309 | 193 | 732 | 732 | 4 | 0 | 20 | 0 | 2 | 20 | 0 | 0 | 37 | 0 | 0 | 54 | 76 | 91 | 193 | 160 |
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.










