Flatrock surfForecast / SA – Eyre Peninsula / Australia

information circle12 Day Weather and Surf, issued 3 am Wednesday 31 Dec 2025 ACDT
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
18.8° C
(Which is 1.0°C warmer than 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 (Jan 05) at 4AM. The primary swell is predicted to be 1.1m and 12s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Flatrock in the next 12 days are 2.1m 16s and forecast to arrive on Saturday (Jan 03) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Wednesday (Dec 31) at 7PM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Mon 5th Jan)3.5ft (1.1m) 12s
Best Surf 4AM (Mon 5th Jan)3.5ft (1.1m) 12s
Most Powerful 1AM (Sat 3rd Jan)7ft (2.1m) 16s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 18°C on Fri morning, min 13°C on Wed night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Mon afternoon, min 15°C on Sat night). Winds decreasing (fresh winds from the S on Sat morning, light winds from the ESE by Mon morning).

Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
1
0
0
1
3
1
2
3
2
2
2
1
1
2
0
2
0
0
2
Swell
Height Map
Wave Height (m) & direction (?)
1.6
SW
1.5
SW
1.4
SW
1.1
SW
1.1
SW
1.1
SW
1.2
SW
1.6
SW
2.1
SW
1.9
SW
1.7
SW
1.5
SW
1.4
SW
1.3
SW
1.1
SW
1.1
SW
1
SW
0.9
SW
0.8
SW
0.8
SW
1
SW
Period(s) (?)131312121211181716151414131312121212121111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)8677575583613252939361417214615261187804623535373367273228164147242
Wind
(km/h)
30
SE
35
SSE
30
SE
25
SE
35
SSE
30
SE
20
SSE
25
S
25
SSE
25
SSE
30
SSE
25
SE
15
SE
25
SSE
20
ESE
10
ESE
25
SSE
20
ENE
10
NNW
15
SW
15
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
on
cross-
on
off
High Tide
/ height (m)
12:55PM
0.12
12:22AM
0.54
1:21PM
0.11
1:02AM
0.60
1:25PM
0.10
1:40AM
0.63
1:28PM
0.11
2:14AM
0.64
1:37PM
0.14
2:45AM
0.63
1:57PM
0.19
3:11AM
0.59
2:26PM
0.23
3:32AM
0.55
Low Tide
/ height (m)
2:37PM
0.12
9:16AM
0.07
4:03PM
0.09
9:39AM
0.06
5:08PM
0.06
10:00AM
0.07
6:01PM
0.03
10:14AM
0.10
6:47PM
0.01
10:19AM
0.13
7:30PM
-0.00
10:19AM
0.14
8:10PM
0.01
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Sunrise6:16--6:18--6:18--6:20--6:20--6:20--6:22--
Sunset-8:44--8:45--8:45--8:45--8:45--8:45--8:45-
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C151514171716181816171716181817242724302930
Feels °C (?)887111111161412141212141313202121262526
  • 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 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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