Flatrock Surf Break

Lat Long: 34.68° S 135.32° E

Issued: 8 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 9s period and expected on Wednesday (Jul 08) at 12AM.

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

G’day, Rusty here, your local surf reporter. We’ve got a solid run of Southern Ocean groundswell lining up at Flatrock over the next fortnight, and it’s going to be a ripper for the experienced crew. The reef handles a serious amount of energy, and we’ve got a window of unreal conditions coming, with a standout day that’ll have the advanced boys frothing. Let’s crack into it.

The first session worth a paddle is Saturday morning, 4th July. There’s some clouds overhead with a light cross-off breeze from the SE at 6 mph, keeping things clean. Swell is a meaty 8.2 ft out of the SW, with a long 14-second period, so you’re getting proper groundswell energy. The combined energy is pumping at 2448 (moderate-strong). This is advanced territory—don’t even think about bringing a learner board. Conditions hold into the afternoon, with a 7.2 ft SSW swell and similar clean surfaces.

Sunday the 5th is the standout. Early morning, it’s crystal clear overhead, with a clean offshore wind from the E at 16 mph. This is premium—the reef will be groomed to perfection. Swell size jumps to 11.5 ft from the SSW, with a very long 17-second period. That’s a deep ocean groundswell delivering heaps of grunt. Combined energy is a massive 6602 (strong). This is only for experts—over 8.2 ft and punchy. The offshore breeze and long period mean the reef will have thick, lined-up walls, but it’ll break a bit straight in spots. By afternoon, it’s slightly smaller at 9.8 ft and 16 seconds, still with offshore flow, and still excellent.

Monday the 6th eases a bit. Morning shows clean 5.9 ft SW swell (14 seconds) with light cross-off wind. Combined energy is 1370 (moderate). Afternoon drops to 5.2 ft and 942 energy (weak-moderate). Still good, but a step down.

Tuesday the 7th morning has some cloud cover and a gentle cross-off, but the real treat is Tuesday afternoon—glassy, flat calm, with NE wind at just 3 mph. Swell is 6.6 ft from the SW, 16-second period, and combined energy of 2057 (moderate-strong). That glassy surface will have the reef looking like a mirror. Worth burning a work pass for.

Wednesday the 8th is another big day. Morning has 9.8 ft SW swell at 17 seconds, combined energy 5343 (strong), with clean conditions. Afternoon goes glassy again with a 8.2 ft SW swell (16 seconds) and 3808 energy (strong). For experts only.

Surf stays solid through Thursday the 9th and Friday the 10th, with 6.6 ft to 6.9 ft SW swells and offshore or light cross-off wind, energy in the 1200-1900 range. Clean but not as powerful.

Now for the grim stretch. From Saturday the 11th through to Monday the 13th, it’s dangerous. Saturday brings a near gale from the NW at 34 mph, cross-onshore, with 7.5 ft to 9.8 ft messy swell—blown out and ugly. Sunday is even worse: 14.8 ft to 13.1 ft SW swell but hammered by strong cross-onshore winds and lumpy conditions. Combined energy hits 11964 (very strong) but it’s a washing machine. Monday the 13th has a massive 19.7 ft SSW swell—combined energy 26728 (extreme)—but cross-onshore winds and choppy. This is kite-surf territory, not paddle. Avoid unless you want a beating.

Tuesday the 14th remains onshore and lumpy, with 11.5 ft to 13.1 ft swell and poor quality. The wind eases slightly, but it’s still onshore. Not recommended.

The light returns Wednesday the 15th morning. Glassy conditions again with a 7.5 ft SW swell, 15-second period, combined energy 2705 (moderate-strong). Clean surfaces, excellent for experienced surfers. Afternoon is similar with 7.9 ft and light cross-off.

Thursday the 16th is another cracker. Morning has 8.2 ft SW swell with a long 17-second period, light cross-off from the NE at 6 mph, combined energy 3657 (strong). Afternoon goes glassy with a 7.5 ft SW swell and 2642 energy (moderate-strong). The reef will be singing.

Friday the 17th drops down. Morning has 5.2 ft SW swell (13 seconds) and 959 energy (weak-moderate). Afternoon is 4.6 ft with 721 energy. Still clean, but nothing special.

Saturday the 18th shows 5.6 ft to 5.9 ft SW swells, but a moderate breeze from the NNE will add a bit of texture. A cross-shore chop by afternoon keeps it marginal.

Sunday the 19th closes the window with a 9.8 ft SW swell,

Short Range Forecast

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

Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Fri
10
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
4
4
4
5
7
5
4
4
3
4
3
4
5
6
5
4
4
4
4
3
1
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
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
1.6
SSW
17
1.7
SW
16
2
SW
16
1.9
SW
18
3
SW
17
2.5
SW
16
2.2
SW
16
2
SW
15
2.1
SW
15
2
SW
15
1.8
SW
14
1.6
SW
14
Wave Graph
Metric surfscale
Energy kJ
3500
2448
1886
3597
6602
4643
2647
1370
942
1421
1412
1983
2198
5343
3808
2383
1672
1976
1738
1273
943
Wind (km/h)
10
SSW
10
SE
10
SE
25
E
25
E
20
E
20
ENE
10
NE
10
SE
15
E
15
ENE
5
NE
20
ENE
15
NNE
5
NNW
15
ENE
10
ENE
5
SE
15
NE
20
NNE
25
NNW
Wind State
cross
cross-off
cross-off
off
off
off
off
cross-off
cross-off
off
cross-off
glassy
off
cross-off
glassy
cross-off
off
cross-off
cross-off
cross-off
cross
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
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
cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
cloud
clear
clear
part cloud
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
5:30
5:30
5:30
5:30
5:31
5:31
 mm
Temp °C
14
14
15
14
13
12
11
11
12
13
14
16
15
15
16
15
14
15
12
13
16
Feels °C
10
11
12
11
8
7
6
9
9
11
11
15
11
11
15
11
12
13
9
7
10
Swell 1
Height (m)
Direction
Period (s)
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
1.6
SSW
17
1.7
SW
16
2
SW
16
1.9
SW
18
3
SW
17
2.5
SW
16
2.2
SW
16
2
SW
15
2.1
SW
15
2
SW
15
1.8
SW
14
1.6
SW
14
Energy kJ
3500
2448
1886
3597
6602
4643
2647
1370
942
1421
1412
1983
2198
5343
3808
2383
1672
1976
1738
1273
943
Swell 2
Height (m)
Direction
Period (s)
0.6
SW
19
0.8
SSE
11
0.6
SSE
10
1.8
SW
15
0.6
SW
18
0.2
SSE
12
0.1
S
11
Energy kJ
303
150
74
1421
199
14
2
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.6
E
3
0.8
ESE
9
0.5
NNW
4
Energy kJ
8
94
7
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
5
7
5
4
4
3
4
3
4
5
6
5
4
4
4
4
4
4
Distance (km)
126
0
0
0
0
0
0
0
0
0
74
0
0
0
0
0
0
0
0
44
44
Best forecast wave conditions in Eyre Peninsula
Rating
(10 max)
4
4
4
5
7
5
4
4
3
4
3
4
5
6
5
4
4
4
4
4
4
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
5
5
9
9
5
4
4
8
7
4
5
9
9
5
4
4
4
4
4
Header Global
Rating
(10 max)
5
5
5
4
5
9
7
5
6
8
7
5
5
9
9
9
5
6
6
7
7
  • 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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