Manly-South Steyne Surf Break

Lat Long: 33.80° S 151.30° E

Manly-South Steyne Surf Forecast and Surf Report

Issued: 9 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Manly-South Steyne sea temperature is
17.1° C
0.8° 

Manly-South Steyne surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (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 Powerful10AM (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 Forecast

Mostly dry. Warm (max 21°C on Fri morning, min 13°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate 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
Rating
(10 max)
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
S
12
0.1
S
11
0.1
S
11
0.1
S
10
0.2
S
9
0.3
S
8
0.3
S
4
0.9
S
9
0.6
S
13
0.9
S
10
0.8
S
10
0.7
S
9
0.6
S
9
0.5
S
9
0.4
S
9
0.3
S
9
0.2
S
11
1.2
S
8
1.3
S
10
Wave Graph
Metric surfscale
Energy kJ
3
2
2
2
6
12
3
129
121
156
116
83
62
40
25
14
9
196
338
Wind (km/h)
10
WNW
10
NW
5
NNE
10
W
15
W
15
SSE
5
SE
0
WNW
15
NE
10
N
15
N
30
NE
10
NNW
15
N
10
NW
20
NNW
15
WNW
20
SSW
20
SW
Wind State
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
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
clear
clear
clear
part cloud
part cloud
part cloud
light rain
mod rain
thunderstorm
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
6:24
6:24
6:22
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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