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Surf Forecasts:

Flatrock surfForecast / SA – Eyre Peninsula / Australia

information circle12 Day Weather and Surf, issued 2 am Monday 08 Sep 2025 ACST
Forecast update in hr  min  s Forecast update imminent
Flatrock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Flatrock sea temperature is
14.9° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Flatrock this week:

The surf forecast for Flatrock over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 08) at 9PM. The primary swell is predicted to be 1.7m and 19s period with a secondary swell of 1.8m and 12s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Flatrock in the next 12 days are 3.5m 17s and forecast to arrive on Tuesday (Sep 09) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Sep 13) at 6AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 8th Sep)5.5ft (1.7m) 19s
Best Surf 3AM (Tue 9th Sep)8ft (2.5m) 19s
Most Powerful12PM (Tue 9th Sep)11ft (3.5m) 17s

Table - best surf conditions forecast for Flatrock over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 16mm), heaviest on Tue night. Very mild (max 15°C on Mon afternoon, min 9°C on Tue morning). Winds increasing (calm on Mon night, strong winds from the S by Tue night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 17°C on Sat afternoon, min 11°C on Fri night). Winds increasing (calm on Thu night, strong winds from the N by Sat night).

Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
1
5
3
5
6
0
0
2
2
2
4
2
2
4
3
2
1
0
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.4
SW
2.3
SW
1.9
SW
2.5
SW
3
SW
3
SW
3
SSW
2.5
SSW
2.4
SSW
2.1
SSW
2
SSW
1.8
SW
1.9
SW
1.6
SW
2
SW
2
SW
1.8
SW
1.6
SW
1.1
SW
1.1
SW
1.6
SW
Period(s) (?)131319181716161514141315141315141514141413
Wave
Graph
(?)Metric surfscale
Energy (?)229022314018454452238749391853074182334616321728151415811921169513559956768241081
Wind
(km/h)
25
NW
15
WNW
15
E
10
WNW
10
SW
35
S
35
SSW
35
SSW
30
SSW
30
SSW
20
S
5
WSW
10
NW
10
W
15
NE
25
NNE
15
NW
25
NNE
45
N
35
NW
20
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		offoncross-
on		crosscrosscross-
on		crosscrosscrossglasscross-
on		oncross-
off		cross-
off		cross-
on		cross-
off		crosscross-
on		on
High Tide
/ height (m)
1:16PM
0.55
1:20AM
0.44
1:34PM
0.50
1:41AM
0.50
1:46PM
0.43
2:04AM
0.53
1:50PM
0.37
2:29AM
0.55
1:45PM
0.33
2:55AM
0.54
1:27PM
0.31
3:22AM
0.50
12:56PM
0.33
Low Tide
/ height (m)
7:32PM
0.04
7:20AM
-0.00
7:37PM
0.03
7:52AM
0.02
7:40PM
0.02
8:22AM
0.06
7:44PM
-0.01
8:48AM
0.13
7:49PM
-0.03
9:09AM
0.20
7:56PM
-0.05
9:19AM
0.27
8:04PM
-0.05
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Sunrise6:39--6:37--6:35--6:35--6:33--6:31--6:30--
Sunset-6:14--6:15--6:15--6:15--6:16--6:16--6:17-
clear
clear
clear
light rain
rain showers
mod rain
cloud
rain showers
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
cloud
cloud
rain showers
Rain (mm)
---1410-1------------1
Temp. °C141515131012121313121213131413151716191815
Feels °C (?)9121410744666711101110101411101012
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for SA - Eyre Peninsula

  1. weather stationWind Update The wind is still cross-on at Flatrock (moderate winds from the NNW at Port Lincoln 52 km from Flatrock). 2.4m 13s groundswell from the SW with a 0.5m 19s long period groundswell from the SSW. 2 swells combining to make bigger set waves.

    45 minutes ago Flatrock
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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Flatrock surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Flatrock at:
surf-forecast.com

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 12 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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