Siriu Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 8 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
19.3° C
0.7° 

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


How big are the waves at Siriu today (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 3ft (0.9m), 8s period with ENE swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 2.5ft (0.8m), 7s period with ENE swell.
  • Evening surf: Evening surf (20 Aug, local time) - 3ft (0.9m), 7s period with ENE swell.

The current surf forecast for Siriu at 5PM is: 0.7m 7s primary swell from a East-northeast direction and 0.5m 9s secondary swell from a South direction, 0.7m 4s secondary swell from a Northeast direction (forecast issued at 08:00am August 20). The wind direction is predicted to be cross-onshore.

Time (-03) & DateWave HeightWave Period
Morning (20 Aug)3ft (0.9m)8s
Afternoon (20 Aug)2.5ft (0.8m)7s
Evening (20 Aug)3ft (0.9m)7s

Table - waves today at Siriu. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 25°C on Thu afternoon, min 11°C on Sat night). Wind will be generally light.

Thursday
20
Friday
21
Saturday
22
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
0
0
0
0
0
0
1
1
1
0
0
2
3
!
!
3
4
3
3
2
3
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)
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.8
ENE
7
0.7
ENE
7
0.9
ENE
7
0.9
ENE
7
0.8
ENE
7
0.8
S
7
1
S
7
0.8
S
7
1.1
S
8
1.8
S
9
2.4
S
9
3
S
10
3
S
10
2.5
S
10
2.4
S
9
2.3
S
9
2.2
S
9
1.7
S
10
1.6
S
10
Wave Graph
Metric surfscale
Energy kJ
96
94
99
73
57
84
76
59
65
106
65
160
503
979
1655
1581
1238
1014
893
845
529
480
Wind (km/h)
10
NE
15
NE
20
NNE
20
NNE
15
NNE
10
N
15
S
5
S
5
W
10
SW
15
S
20
S
20
SSW
20
SSW
15
SSW
15
SSW
20
SSW
15
SSW
15
S
15
S
10
S
10
SSW
Wind State
cross-on
cross-on
cross
cross
cross
cross
cross
glassy
off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
High Tide
6:01AM0.51m
12:32PM0.51m
4:54PM0.51m
11:59PM0.31m
12:33PM0.57m
11:21PM0.37m
12:43PM0.63m
Low Tide
9:02AM0.45m
2:44PM0.49m
10:27PM0.31m
2:29AM0.30m
10:38PM0.37m
4:12AM0.25m
6:30PM0.40m
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
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>
6:41
6:39
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:53
5:54
5:54
 mm
Temp °C
19
20
23
25
21
21
18
17
17
18
19
19
15
14
14
13
12
13
14
13
12
12
Feels °C
20
20
22
24
21
22
16
18
17
16
15
14
11
10
10
9
7
9
10
9
9
9
  • 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
How to use the Wavefinder 

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 Siriu 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.


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