Flatrock Surf Break

Lat Long: 34.68° S 135.32° E

Flatrock Surf Forecast and Surf Report

Issued: 8 am 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Flatrock sea temperature is
15.4° C
0.1° 

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


Flatrock surf forecast from 30 Jul 2026:

  • Best quality surf: Thursday 6 Aug, 3AM (local time) - 8ft (2.5m), 16s period, SW swell with offshore winds.
  • Most powerful swell: Monday 3 Aug, 12AM (local time) - 11ft (3.5m), 16s period, SW swell with 5,998 kJ wave energy.
  • Next surfable swell (1★+): Thursday 30 Jul, 6PM (local time) - 6.5ft (2.0m), 13s period with SSW 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 Thursday (Jul 30) at 6PM. The primary swell is predicted to be 2.0m and 13s period with a secondary swell of 0.1m and 24s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Flatrock in the next 16 days are 3.5m 16s and forecast to arrive on Monday (Aug 03) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Aug 05) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Thu 30th Jul)6.5ft (2.0m) 13s
Best Surf 3AM (Thu 6th Aug)8ft (2.5m) 16s
Most Powerful12AM (Mon 3rd Aug)11ft (3.5m) 16s

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


The Lowdown

Alright, this is Rusty, and I’m looking at what’s coming up for us here. We’ve got a solid 16-day window, but it’s not all smooth sailing. There’s a heap of energy on the way, but the wind is gonna be a real pain for a good stretch.

First up, the standout is Thursday the 30th of July. Flatrock is firing early with a clean 8ft SSW groundswell, period a solid 13 seconds, and glassy offshore ESE wind at just 3 mph. The water’s sitting at 60°, which is pretty much bang on for this time of year. The combined energy is a healthy 2003 (moderate), and it’s all lining up for experienced surfers. This is the one to get out for. The afternoon stays clean too, with a bit more wind but still cross-off, holding the 7ft swell.

Friday the 31st drops off a bit. The swell eases to 5ft, but it’s still a clean SW groundswell. The wind goes cross-off in the morning, making it rideable, but the energy is moderate. It’s a good day for a longer board or a cruisy session.

Now, here’s where it gets gnarly. From Saturday the 1st of August right through to Monday the 3rd, the wind is howling. We’re seeing onshore and cross-on winds of 19 to 22 mph, with the swell jumping above 8ft. That’s expert-only territory, and with the wind, it’s going to be a messy, lumpy mess. The energy is strong (over 3000), but it’s not for the faint of heart or for paddle surfing. Honestly, this setup looks more interesting for kite surfing.

Tuesday the 4th of August brings a fresh start. The morning is clean again with a 6ft SSW swell, cross-off NE wind, and a 12-second period. The energy is moderate (1234). It’s a good, solid option.

We get a bit of a lull on Wednesday the 5th and Thursday the 6th isn’t much better, but Friday the 7th of August morning has potential. An 8ft SW groundswell with a 16-second period and cross-off NNE wind at 19 mph. The energy is strong (3020), but that wind is fresh. It’s clean, but it’s a paddle-out.

The real wildcard is Saturday the 8th of August afternoon. The swell jumps to 10ft from the WSW with a 19-second period, but the wind is onshore. The energy is off the charts at 10572 (very strong). It’s a big, powerful groundswell, but it’s going to be messy.

Sunday the 9th of August morning is a massive swell event. 13ft SW with a 16-second period, but onshore wind at 28 mph. The energy is immense (15495), but it’s too big for Flatrock, and the wind is howling. This is for experts only, and even then, it’s a beast.

The following week is a bit of a mixed bag. We get some clean days, like Thursday the 13th of August morning with a 5ft SW groundswell, but the wind is strong. The real highlight at the end of the window is Friday the 14th of August. Morning is clean with a 10ft SW groundswell, a 19-second period, and cross-off wind. The energy is massive (6040). This is an exceptional day for expert surfers. The afternoon holds that same 10ft swell with a 19-second period and clean cross-off wind. This is a true standout for the end of the forecast, but it’s a long way out, so keep an eye on it.

So, to wrap it up: Thursday the 30th of July is your best early bet, and Friday the 14th of August is the one to watch for the end of the run. In between, there’s a lot of wind and big swell, so pick your sessions wisely.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 15°C on Sat afternoon, min 11°C on Fri morning). Winds increasing (calm on Fri afternoon, strong winds from the NNW by Sat night).

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Sun morning. Very mild (max 14°C on Sun afternoon, min 11°C on Tue night). Winds decreasing (fresh winds from the W on Sun morning, calm by Mon night).

Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
2
2
3
1
0
1
0
0
0
0
1
3
4
3
3
1
2
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SSW
13
2.1
SSW
13
1.7
SSW
13
1.4
SW
13
1.4
SW
14
1.8
SW
18
2.2
SW
17
2.5
SW
17
2.4
SW
16
2.1
SW
15
2.5
SW
15
3.5
SW
16
3
SW
14
2.5
SW
13
2.2
SW
13
1.7
SSW
12
1.7
SSW
15
1.2
SW
20
2.1
SW
18
2
SW
17
2.1
SW
16
Wave Graph
Metric surfscale
Energy kJ
1830
1475
1030
711
743
1974
2778
3442
2866
2130
2959
5998
3341
2310
1609
769
1206
1145
2812
2347
2415
Wind (km/h)
5
ESE
10
S
15
ENE
15
NNE
15
NW
15
NE
30
N
30
NNW
35
N
30
W
35
W
30
SW
20
SW
15
SW
5
S
10
NE
5
WNW
25
NE
25
NNW
20
N
0
NNE
Wind State
off
cross-off
off
cross-off
cross-on
cross-off
cross
cross-on
cross
on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-on
cross-off
cross
cross
glassy
High Tide
1:28PM0.59m
1:25AM0.28m
1:50PM0.58m
1:50AM0.32m
2:12PM0.56m
2:18AM0.36m
2:33PM0.52m
2:48AM0.39m
2:51PM0.47m
3:20AM0.41m
3:05PM0.41m
3:56AM0.42m
3:05PM0.34m
Low Tide
8:19PM0.08m
6:55AM0.02m
8:31PM0.07m
7:28AM0.02m
8:45PM0.06m
8:01AM0.04m
8:59PM0.05m
8:36AM0.07m
9:12PM0.05m
9:11AM0.11m
9:24PM0.05m
9:50AM0.18m
9:31PM0.05m
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
light rain
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:24
7:24
7:22
7:22
7:20
7:20
7:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:45
5:46
5:46
5:47
5:49
5:50
 mm
2
Temp °C
12
12
12
13
13
13
13
15
14
13
14
14
12
12
12
12
12
12
14
15
15
Feels °C
10
9
9
8
9
9
6
10
8
7
6
6
7
7
8
9
9
7
9
11
14
  • 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 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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