Surf Forecasts:
Manly-South Steyne surf forecast from 10 Sep 2026:
- Best quality surf: Thursday 17 Sep, 1AM (local time) - 7ft (2.1m), 11s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 7AM (local time) - 11ft (3.5m), 10s period, S swell with 2,290 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 10AM (local time) - 5ft (1.6m), 10s period with SSE 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 Friday (Sep 11) at 10AM. The primary swell is predicted to be 1.6m and 10s period with a secondary swell of 0.2m and 15s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Manly-South Steyne in the next 16 days are 3.5m 10s and forecast to arrive on Wednesday (Sep 16) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Tuesday (Sep 15) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 11th Sep) | 5ft (1.6m) 10s |
| Best Surf | 1AM (Thu 17th Sep) | 7ft (2.1m) 11s |
| Most Powerful | 7AM (Wed 16th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Manly-South Steyne over the next 16 days.
The Lowdown
Alright, mate, Rusty here. Let's have a proper look at what the next couple of weeks are serving up for Manly-South Steyne. It's a bit of a mixed bag, but there are a couple of windows where it should turn on.
Right off the bat, we’ve got some clean lines on Friday morning. It’s a bit lumpy from a cross-onshore breeze, but there’s decent energy in the water. We're looking at 5ft of south-southeast swell with a 10-second period, and the water’s sitting about average for this time of year at 64°F. There’s not a ton of push behind it, but it’s rideable.
The real standout comes early Saturday morning. The wind drops right out, leaving it glassy, and we’ve got a nice 4ft south-southeast groundswell rolling in with a 12-second period. It’s not huge, but that long period means some proper shape and power behind it. This is definitely one of the better windows in the forecast. The energy is moderate and the conditions should be clean and inviting.
After that, things go a bit quiet. From Saturday afternoon right through the middle of next week, the swell drops right out and the wind turns onshore and lumpy. There’s a few days there where it’s just not worth paddling out. You’re looking at small, weak, and messy surf.
Then, things fire back up Wednesday morning the 16th. There’s a big pulse of south swell, pushing 10ft with a strong energy reading. But it comes with a fresh cross-offshore breeze. It’s gonna be big, powerful, and definitely one for the experienced crew only. At that size, it’s well beyond beginner territory. Thursday morning, the 17th, looks like the pick of that run. The swell has eased to a more manageable 5ft, the wind is light and cross-offshore, leaving it clean, and the energy is still solid. That’s your hero window for the week.
The following week looks less promising. We see some pulses of energy, like a 7ft south swell on Wednesday the 23rd and a 5ft on Thursday the 24th, but they come with onshore winds and questionable conditions. It’s likely to be a bit of a mess with that cross-onshore wind. Keep your expectations low for that second week, it’s looking pretty marginal.
So, bottom line: Suss out that Saturday morning session, and keep your eyes peeled for Thursday a week out. That’s where the magic will be. For the rest, it’s a waiting game.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 13°C on Fri morning). Winds increasing (calm on Fri night, fresh winds from the NNE by Sun afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 23°C on Mon afternoon, min 12°C on Tue night). Winds increasing (light winds from the N on Mon morning, strong winds from the S by Tue night). | ||||||||||||||||||||
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) | SSE 10 | SSE 9 | SSE 10 | SSE 12 | S 10 | S 10 | S 10 | S 10 | S 10 | S 11 | S 11 | SSE 10 | S 9 | S 9 | SSE 8 | S 10 | S 9 | S 11 | S 10 | SSE 10 | SSE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 492 | 367 | 271 | 343 | 225 | 148 | 115 | 138 | 104 | 119 | 82 | 31 | 27 | 14 | 915 | 1999 | 950 | 1029 | 530 | 391 | 211 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | off | glassy | on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off |
High Tide | 8:15PM1.56m | 8:46AM1.41m | 8:56PM1.47m | 9:22AM1.44m | 9:37PM1.35m | 9:59AM1.45m | 10:17PM1.22m | 10:36AM1.42m | 10:59PM1.09m | 11:16AM1.37m | 11:45PM0.98m | 12:02PM1.31m | 00:41AM0.90m | ||||||||
Low Tide | 2:02PM0.17m | 2:36AM0.06m | 2:48PM0.16m | 3:09AM0.12m | 3:33PM0.18m | 3:41AM0.19m | 4:18PM0.23m | 4:13AM0.28m | 5:04PM0.29m | 4:46AM0.37m | 5:55PM0.37m | 5:22AM0.45m | 6:55PM0.43m | ||||||||
 |  |  | | | | | | | | | | | |  | |  |  | | | | |
 | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 17 | 16 | 16 | 17 | 18 | 17 | 22 | 23 | 23 | 18 | 17 | 14 | 13 | 14 | 15 | 14 | 14 | 14 |
Feels °C | 13 | 13 | 15 | 13 | 13 | 14 | 15 | 14 | 16 | 19 | 20 | 20 | 17 | 15 | 8 | 6 | 7 | 9 | 11 | 11 | 13 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 9 | SSE 10 | SSE 12 | S 10 | S 10 | S 10 | S 10 | ENE 6 | NE 6 | S 11 | ENE 6 | NE 6 | NE 6 | NE 6 | E 12 | E 14 | S 11 | S 10 | SSE 10 | SSE 9 |
| kJ | 492 | 367 | 271 | 343 | 225 | 148 | 115 | 138 | 69 | 31 | 82 | 47 | 18 | 8 | 1 | 3 | 4 | 1029 | 530 | 391 | 211 |
Swell 2 Height (m) Direction Period (s) | E 15 | E 14 | SSE 19 | SSE 19 | SSE 19 | NE 4 | ENE 4 | ENE 13 | S 10 | S 11 | ENE 13 | SSE 10 | S 9 | S 9 | E 14 | E 15 | — | E 13 | S 19 | E 13 | NE 4 |
| kJ | 17 | 4 | 35 | 122 | 71 | 9 | 8 | 17 | 104 | 119 | 16 | 31 | 27 | 14 | 15 | 4 | — | 3 | 28 | 13 | 2 |
Swell 3 Height (m) Direction Period (s) | — | E 10 | E 13 | ENE 14 | ENE 14 | SSE 20 | SSE 16 | E 9 | E 13 | E 13 | — | E 12 | E 12 | E 13 | S 18 | — | — | — | E 13 | S 19 | E 13 |
| kJ | — | 2 | 14 | 19 | 19 | 129 | 27 | 2 | 13 | 13 | — | 12 | 3 | 13 | 6 | — | — | — | 13 | 7 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 3 | NE 4 | NE 4 | ENE 4 | — | — | NE 5 | NW 2 | SSW 3 | SE 3 | SSE 8 | S 10 | S 9 | — | — | NE 3 | NNE 3 |
| kJ | — | — | — | — | 3 | 18 | 16 | 34 | — | — | 37 | 1 | 2 | 5 | 915 | 1999 | 950 | — | — | 2 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 28 | 0 | 0 | 453 | 3 | 10 | 503 | 1 | 3 | 4 | 1 | 1 | 256 | 250 | 207 | 12 | 0 | 0 | 28 | 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.
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