Flatrock Surf Break

Lat Long: 34.68° S 135.32° E

Flatrock Surf Forecast and Surf Report

Issued: 8 pm 26 Jul 2026 (local time)

Forecast update in  hr  min

Today's Flatrock sea temperature is
15.4° C
0.0° 

Flatrock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Flatrock surf forecast from 26 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 12AM (local time) - 18ft (5.5m), 16s period, SW swell with cross-onshore winds.
  • Most powerful swell: Wednesday 29 Jul, 3AM (local time) - 20ft (6.0m), 16s period, SSW swell with 17,192 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 12AM (local time) - 18ft (5.5m), 16s period with SW swell.

Best Forecast Surf Conditions for Flatrock this week:

The surf forecast for Flatrock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 12AM. The primary swell is predicted to be 5.5m and 16s period with a secondary swell of 4.0m and 16s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Flatrock in the next 16 days are 6.0m 16s and forecast to arrive on Wednesday (Jul 29) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Jul 31) at 6AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Wed 29th Jul)18ft (5.5m) 16s
Best Surf12AM (Wed 29th Jul)18ft (5.5m) 16s
Most Powerful 3AM (Wed 29th Jul)20ft (6.0m) 16s

Table - best surf conditions forecast for Flatrock over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s get stuck into the outlook for our region over the next couple of weeks.

First thing to say is, the next few days are a right-off. We’ve got a massive swell on the way, but it’s pretty much unsurfable right now. Monday the 27th is a total no-go with strong cross-shore winds and a lumpy mess, and Tuesday the 28th stays ugly with fresh cross-onshore winds and a big, raw 10ft SW swell. The energy is massive – we’re talking over 5000 (combined energy of all swells directed here) – but it’s all blown out. This is more of a kite session than a paddle session for the next couple of days.

Wednesday the 29th is still rough, but it’s a turning point. The swell is still big at 12ft from the SSW, and the period is a very long 16 seconds, which is proper groundswell. The wind is a gentle cross-shore, so it’s not perfect, but it’s getting there. The energy is still pumping over 6000. This is for the experts only, and even then, it’s a battle.

Now, the first real standout is Thursday the 30th. Flatrock (reef) wakes up. The swell drops to a still-chunky 8ft from the SSW, with a solid 13-second period. The real story is the wind: a light offshore Easterly at 3 mph. That’s glassy. It’s clean. The water temp is about average for the time of year, so nothing wild there. The energy is a solid 1918 – moderate but packing a punch. This is the best window of the week for an experienced surfer. The morning is the call.

Friday the 31st and Saturday the 1st of August are a step down in size and quality, with cross-off and cross-shore winds messing with the shape. The swell is still there, but it’s not as clean. Skip it.

Sunday the 2nd of August is a write-off again with a strong onshore wind and rain. The swell is a messy 10ft.

Here’s where it gets interesting. Tuesday the 4th of August brings another clean window. The swell has settled to a clean 7ft from the SW, with a nice 13-second period. The wind is a light cross-off, and the conditions are described as excellent. The energy is moderate at 1412. It’s a great option for experienced surfers who want a less hectic session than Thursday.

Wednesday the 5th of August is the real long-range gem. The morning is absolute perfection: 6ft of SW swell at a very long 16 seconds, with a clean offshore wind from the ENE. The energy jumps to 2475. The afternoon gets a bit bigger at 8ft with a 19-second period – that’s a very long period groundswell, which will be proper and powerful. For a reef like Flatrock, that’s going to be incredible. This is the standout of the second week. It’s promising, but it’s a week away, so keep your fingers crossed.

After that, the 6th and 7th of August have some clean windows but with smaller swell and moderate winds. The 8th and 9th get hammered by near-gale winds and a massive 13ft swell on the Sunday – that’s 13684 energy, which is dangerous and blown out. The run ends on the 11th of August with a clean, light wind morning on a 7ft SW swell, which is a solid note to finish on.

So, to sum it up: the first week is a struggle, but Thursday the 30th of July morning is the clear winner for the near term. For the long-range, Wednesday the 5th of August is looking like the absolute best of the whole forecast, with clean, offshore winds and a powerful, long-period swell.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Mon night. Very mild (max 15°C on Mon afternoon, min 11°C on Tue night). Winds decreasing (near gales from the NNW on Mon morning, light winds from the S by Wed afternoon).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 14°C on Sat afternoon, min 10°C on Sat morning). Winds increasing (calm on Thu morning, fresh winds from the N by Sat morning).

Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
!
6
3
3
4
3
4
2
3
3
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
SW
12
1.3
SW
14
2.5
W
9
2.5
WSW
11
3
SW
15
3
SW
15
5.5
SW
16
3.5
SSW
16
3.5
SSW
15
2.5
SSW
14
2.3
SSW
13
2.1
SSW
13
1.7
SSW
13
1.4
SW
13
1.3
SSW
14
1.2
SW
18
1.6
SW
16
2.2
SW
19
2.4
SW
17
Wave Graph
Metric surfscale
Energy kJ
583
595
973
1921
3848
4368
15445
6694
4869
2694
1859
1497
1014
613
607
915
1286
3453
3046
Wind (km/h)
25
NNW
45
NNW
50
NW
35
W
35
WSW
35
WSW
25
SSW
15
S
15
SSW
10
S
5
E
5
SW
15
ENE
15
NNE
10
NW
20
NE
30
N
25
NNW
35
N
Wind State
cross
cross
cross-on
on
cross-on
cross-on
cross-on
cross
cross
cross
off
cross-on
off
cross-off
cross-on
cross-off
cross
cross-on
cross
High Tide
00:33AM0.15m
12:12PM0.52m
00:30AM0.18m
12:39PM0.56m
00:43AM0.21m
1:04PM0.58m
1:02AM0.25m
1:28PM0.59m
1:25AM0.28m
1:50PM0.58m
1:50AM0.32m
2:12PM0.56m
2:18AM0.36m
Low Tide
3:47AM0.13m
8:04PM0.10m
4:59AM0.10m
8:03PM0.09m
5:44AM0.06m
8:10PM0.09m
6:21AM0.04m
8:19PM0.08m
6:55AM0.02m
8:31PM0.07m
7:28AM0.02m
8:45PM0.06m
part cloud
clear
clear
rain showers
part cloud
cloud
cloud
part cloud
clear
cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:26
7:26
7:24
7:24
7:24
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:43
5:44
5:45
5:45
5:45
5:46
 mm
2
Temp °C
14
14
15
15
13
13
11
12
12
12
12
12
12
12
13
12
12
14
14
Feels °C
10
3
7
9
5
5
4
8
8
8
10
9
9
8
10
7
5
8
9
  • Map Icons:
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  • 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 Flatrock Surf forecast

The above surf forecast table for Flatrock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Flatrock can be found by selecting the local surf guide option on the grey menu. Our Flatrock 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 (Flatrock) 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 Flatrock 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.

Are you planning a holiday in Eyre Peninsula? If you are looking for accommodation near Flatrock, camping, hotels and holiday cottages in Eyre Peninsula, consider staying in Port Lincoln which is 49 km (30 miles) away.

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