Flatrock Surf Break

Lat Long: 34.68° S 135.32° E

Issued: 2 pm 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Flatrock sea temperature is
15.6° C

Normal for this time of year

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


Flatrock surf forecast from 3 Jul 2026:

  • Best quality surf: Sunday 5 Jul, 3AM (local time) - 11ft (3.5m), 18s period, SSW swell with offshore winds.
  • Most powerful swell: Sunday 5 Jul, 6AM (local time) - 11ft (3.5m), 17s period, SSW swell with 6,678 kJ wave energy.
  • Next surfable swell (1★+): Saturday 4 Jul, 6AM (local time) - 8ft (2.5m), 14s 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 Saturday (Jul 04) at 6AM. The primary swell is predicted to be 2.5m and 14s period. 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 17s and forecast to arrive on Sunday (Jul 05) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 10s period and expected on Tuesday (Jul 07) at 9PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sat 4th Jul)8ft (2.5m) 14s
Best Surf 3AM (Sun 5th Jul)11ft (3.5m) 18s
Most Powerful 6AM (Sun 5th Jul)11ft (3.5m) 17s

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


Updates in  hr  min  s Forecast update imminent

Alright crew, Rusty here. Let’s have a good look at what’s coming our way.

We’ve got some solid, powerful groundswells lining up for Flatrock over the next couple of weeks, but it’s not all smooth sailing. This is a heavy reef setup for advanced surfers only, and the wind and size are going to be massive factors. There’s a real standout window in the first week, but you gotta pick your moments because things get wild after that.

It kicks off on Friday afternoon, July 3rd, but honestly, the conditions are marginal. We’ve got a 12ft SW swell rolling in – that’s a lot of water – but the wind is a cross-on mess. The combined swell energy is pumping at 9540 (moderate to strong), but the surface will be choppy and lumpy. Not the one to jump on.

Saturday the 4th is where we start seeing some cleaner options. The swell drops to a still-chunky 8ft from the SW early, then 7ft from the SSW later. The wind swings cross-offshore with an ESE to SE flow. The water is about average for this time of year at 60°F. This is excellent for experienced crew, but it’s big at over 8ft, so this is experts-only territory. The energy is solid at 2448 on Saturday morning.

Now, here’s the standout. Sunday morning, July 5th. This is the pick of the forecast. We’ve got a clean 12ft SW groundswell with an extra-long period of 17 seconds, and the wind is blowing offshore from the East at 15 mph. The combined energy is a thumping 6602 (moderate to strong). This is a serious groundswell with very long periods – it will be powerful and walled up, so it’s best left for the experts on this reef. The energy and the clean face will be incredible. The offshore wind is a major positive, keeping it glassy and lined up. This is a true standout, but only for the experienced. Sunday afternoon holds a clean 10ft SSW swell with offshore winds too, still excellent.

Monday the 6th through to Thursday the 9th keeps offering clean, powerful surf in the 5ft to 10ft range, mostly with favorable cross-offshore or offshore winds. Wednesday morning the 8th sees another big pulse of 10ft SW swell at 17 seconds with cross-offshore winds – that’s another expert-only day with exceptional conditions, but the energy is way up at 5221 (moderate to strong).

Friday afternoon the 10th the wind turns cross-onshore from the NNW, and the quality drops right off. From there, it’s a messy run. The 11th and 12th are a write-off with choppy, cross-onshore winds and huge, dangerous swell. Sunday the 12th is forecast to have a massive 16ft SW swell at 16 seconds with 28 mph cross-onshore winds – the energy is a massive 21925 (very strong wave energy). The break can’t handle that size; it’s too big for even experts here.

The second week is a mixed bag. From Monday the 13th through Wednesday the 15th, we’re stuck with strong onshore winds and messy, big surf – mostly poor conditions. Thursday the 16th is a bit cleaner with cross-offshore winds on a 5ft to 6ft SW swell, but the energy is moderate (1401 to 1881) and the conditions are marginal.

Looking further out, Friday the 17th and Saturday the 18th show a glimmer of hope. Friday has excellent, clean 7ft SW surf with very light winds and a long 16-second period. The energy is moderate at 1958. That’s a promising finish to the run, but it’s two weeks away, so don’t lock it in yet. Saturday the 18th goes a bit messy with light cross-shore winds.

So, the clear standout is Sunday, July 5th. That offshore wind on a serious, long-period SW groundswell is the best we’ve got on offer. Everything else in the first week is decent to excellent for experienced surfers, but the second week is full of gaps where the wind or size ruins it. Keep your wetsuit handy and your eyes on that Sunday.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 15°C on Sat morning, min 10°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 16°C on Tue afternoon, min 11°C on Mon afternoon). Wind will be generally light.

Fri
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
6
4
4
4
5
6
5
4
4
3
4
3
4
7
6
5
4
4
4
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3.5
SW
15
3
SSW
14
2.5
SW
14
2.2
SSW
14
3
SSW
15
3.5
SSW
17
3
SSW
16
2.4
SSW
16
1.8
SSW
14
1.6
SSW
14
1.5
SSW
17
1.7
SW
15
2
SW
16
3
SW
18
3
SW
17
2.5
SW
16
2.2
SW
16
1.9
SW
15
1.9
SW
15
1.8
SW
14
1.7
SW
15
Wave Graph
Metric surfscale
Energy kJ
5860
3500
2448
1886
3597
6602
4643
2647
1370
942
1250
1341
2008
4911
5221
3587
2383
1542
1672
1382
1229
Wind (km/h)
15
SSW
10
SSW
10
ESE
15
SE
20
E
25
E
20
E
20
ENE
10
NE
10
SE
15
E
20
ENE
5
E
15
ENE
15
NE
5
E
15
E
15
ENE
10
E
15
NE
15
NNE
Wind State
cross-on
cross
cross-off
cross-off
off
off
off
off
cross-off
cross-off
off
cross-off
off
off
cross-off
off
off
off
off
cross-off
cross-off
High Tide
2:20AM0.26m
2:56PM0.54m
3:01AM0.28m
3:23PM0.50m
3:48AM0.30m
3:50PM0.44m
4:43AM0.31m
4:11PM0.37m
5:58AM0.34m
4:07PM0.30m
7:51AM0.37m
9:46AM0.44m
Low Tide
9:25PM0.11m
7:50AM0.05m
9:49PM0.10m
8:28AM0.08m
10:14PM0.10m
9:11AM0.13m
10:39PM0.11m
10:04AM0.18m
11:01PM0.11m
11:32AM0.25m
11:18PM0.12m
11:24PM0.12m
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:35
7:35
7:35
7:35
7:35
7:35
7:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:29
5:29
5:30
5:30
5:30
5:30
5:31
5:31
 mm
Temp °C
14
14
15
15
14
13
12
11
11
12
13
15
16
15
14
15
14
14
15
12
13
Feels °C
10
10
12
11
11
8
7
6
9
9
10
12
14
11
11
13
10
11
12
8
9
Swell 1
Height (m)
Direction
Period (s)
3.5
SW
15
3
SSW
14
2.5
SW
14
2.2
SSW
14
3
SSW
15
3.5
SSW
17
3
SSW
16
2.4
SSW
16
1.8
SSW
14
1.6
SSW
14
1.5
SSW
17
1.7
SW
15
2
SW
16
3
SW
18
3
SW
17
2.5
SW
16
2.2
SW
16
1.9
SW
15
1.9
SW
15
1.8
SW
14
1.7
SW
15
Energy kJ
5860
3500
2448
1886
3597
6602
4643
2647
1370
942
1250
1341
2008
4911
5221
3587
2383
1542
1672
1382
1229
Swell 2
Height (m)
Direction
Period (s)
3
SSW
14
0.6
SW
19
0.9
SSE
11
0.8
SSE
10
2
SW
14
Energy kJ
3680
303
161
107
1649
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.4
ESE
3
0.8
ESE
9
0.7
N
4
Energy kJ
3
96
14
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
4
5
5
5
4
4
3
4
3
4
7
6
5
4
4
4
4
4
Distance (km)
198
126
0
0
0
74
0
0
0
0
0
74
0
0
0
0
0
0
0
0
0
Best forecast wave conditions in Eyre Peninsula
Rating
(10 max)
4
4
4
5
5
5
4
4
3
4
3
4
7
6
5
4
4
4
4
4
Best forecast wave conditions in Australia
Rating
(10 max)
4
8
4
5
5
9
6
6
4
4
9
7
4
7
9
9
6
4
4
4
4
Header Global
Rating
(10 max)
5
8
5
4
5
5
9
6
7
6
9
7
5
6
9
9
9
6
5
6
6
  • 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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