Surf Forecasts:
Manly-South Steyne surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 27 Aug, 4AM (local time) - 5ft (1.6m), 11s period, S swell with offshore winds.
- Most powerful swell: Thursday 27 Aug, 10AM (local time) - 5.5ft (1.7m), 11s period, S swell with 688 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 4AM (local time) - 2.5ft (0.7m), 11s period with S swell.
Best Forecast Surf Conditions for Manly-South Steyne this week:
The surf forecast for Manly-South Steyne over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 4AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.4m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Manly-South Steyne in the next 16 days are 1.7m 11s and forecast to arrive on Thursday (Aug 27) at 10AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Monday (Aug 24) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 23rd Aug) | 2.5ft (0.7m) 11s |
| Best Surf | 4AM (Thu 27th Aug) | 5ft (1.6m) 11s |
| Most Powerful | 10AM (Thu 27th Aug) | 5.5ft (1.7m) 11s |
Table - best surf conditions forecast for Manly-South Steyne over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s on the table for Manly-South Steyne over the next couple of weeks. It’s a slow start – honestly, the first handful of days are a write-off. We’ve got tiny, weak swell and pretty ordinary winds right through the rest of this week. Nothing to get excited about from Friday the 21st through the weekend and into early next week.
The first real glimmer of hope shows up on Sunday the 23rd morning. We finally get a bit of pulse, with a 3ft south swell creeping in. The kicker here is the wind – it’s glassy. That’s rare for this stretch, and it’ll make the place look clean, even if the waves aren't pumping. The combined energy is only moderate at 134, so don’t expect much push, but for a small, clean morning session it’s your best early call.
Things get more interesting around Thursday the 27th. There’s a solid 6ft south swell rolling in, with a period of 11 seconds – that’s proper groundswell energy. The wind is offshore, which is huge. This combo will produce the best surf of the whole outlook, with combined energy at a strong 688. The only catch is the swell direction is south, and this break is sheltered from that direction, so it'll need to wrap in. Still, for an advanced reef setup like this, that offshore wind and decent size will make it the standout. It’s too big for beginners – only for the experienced crew.
After that, things taper off again. There are a few sessions with 3ft to 3ft south and SSE swells, and clean conditions on Friday the 28th, but nothing that’ll light the world on fire. The last week of the forecast is pretty patchy, with some east swell showing up but onshore winds spoiling it mostly. The morning of Tuesday the 1st of September has a clean 4ft east swell, but the quality is ordinary.
Overall, the clear winner is the Thursday 27th morning session. If you’re keen and you can handle a reef, that’s the one to pencil in. Stay patient until then.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Fri morning, min 13°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Tue night. Warm (max 23°C on Tue morning, min 14°C on Sun night). Winds decreasing (fresh winds from the NNE on Mon afternoon, light winds from the SSE by Wed morning). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 12 | S 11 | S 11 | S 10 | S 9 | S 8 | S 4 | S 9 | S 13 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 11 | S 8 | S 10 |
Wave Graph | |||||||||||||||||||
3 | 2 | 2 | 2 | 6 | 12 | 3 | 129 | 121 | 156 | 116 | 83 | 62 | 40 | 25 | 14 | 9 | 196 | 338 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | off | cross-off | cross | glassy | glassy | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-off | cross | cross-off | cross-off | off |
High Tide | 2:24AM0.86m | 2:55PM1.25m | 3:46AM0.84m | 4:00PM1.27m | 4:56AM0.87m | 4:57PM1.32m | 5:49AM0.92m | 5:45PM1.39m | 6:30AM0.99m | 6:27PM1.45m | 7:07AM1.06m | 7:05PM1.51m | |||||||
Low Tide | 7:52AM0.53m | 10:06PM0.48m | 9:01AM0.55m | 11:10PM0.43m | 10:09AM0.53m | 11:58PM0.37m | 11:07AM0.49m | 00:38AM0.30m | 11:56AM0.43m | 1:12AM0.23m | 12:39PM0.37m | 1:44AM0.17m | |||||||
— | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | |
— | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 7 | 1 | 3 | — |
Temp °C | 19 | 21 | 20 | 17 | 20 | 19 | 16 | 15 | 16 | 16 | 19 | 18 | 17 | 23 | 20 | 16 | 21 | 16 | 14 |
Feels °C | 16 | 20 | 18 | 15 | 16 | 15 | 15 | 14 | 13 | 14 | 15 | 14 | 15 | 20 | 19 | 15 | 20 | 13 | 10 |
Swell 1 Height (m) Direction Period (s) | ENE 6 | ENE 6 | ENE 6 | NE 6 | ENE 6 | S 8 | S 4 | S 9 | S 8 | S 10 | S 10 | S 9 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 8 | S 8 | S 10 |
72 | 45 | 34 | 18 | 3 | 12 | 3 | 129 | 78 | 156 | 116 | 83 | 49 | 51 | 62 | 102 | 143 | 196 | 338 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 11 | S 11 | S 10 | S 5 | ENE 6 | NE 6 | ESE 4 | S 13 | ENE 9 | ENE 5 | S 18 | S 9 | S 9 | S 9 | S 9 | S 11 | ENE 8 | ENE 8 |
3 | 2 | 2 | 2 | 2 | 3 | 6 | 5 | 121 | 7 | 26 | 6 | 62 | 40 | 25 | 14 | 9 | 108 | 61 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 9 | S 9 | E 9 | ESE 3 | NE 7 | — | E 14 | ENE 8 | — | ENE 9 | NE 9 | NE 9 | S 16 | S 16 | S 15 | — |
— | — | — | 2 | 6 | 2 | 1 | 7 | — | 4 | 6 | — | 8 | 22 | 23 | 5 | 5 | 4 | — | |
Wind waves Height (m) Direction Period (s) | — | WNW 2 | NE 6 | WSW 3 | — | S 5 | — | — | ENE 9 | ENE 4 | — | ENE 7 | — | NE 6 | N 3 | N 3 | WSW 4 | — | WSW 3 |
— | 1 | 54 | 1 | — | 5 | — | — | 45 | 12 | — | 73 | — | 85 | 5 | 8 | 16 | — | 4 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 1 | 11 | 224 | 270 | 393 | 38 | 0 | 28 | 3 | 3 | 168 | 1 | 1 | 1 | 15 | 0 | 0 | 0 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Manly-South Steyne Surf forecast
The above surf forecast table for Manly-South Steyne provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Manly-South Steyne can be found by selecting the local surf guide option on the grey menu. Our Manly-South Steyne 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 (Manly-South Steyne) 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 Manly-South Steyne 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.
Manly-South Steyne is 5 km (3 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.











