Siriu Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 8 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.6° C
0.0° 

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 (17 Aug):

  • Morning surf: Morning surf (17 Aug, local time) - 5.5ft (1.7m), 8s period with ENE swell.
  • Afternoon surf: Afternoon surf (17 Aug, local time) - 5.5ft (1.7m), 8s period with ENE swell.
  • Evening surf: Evening surf (17 Aug, local time) - 7ft (2.1m), 8s period with NE swell.

The current surf forecast for Siriu at 12PM is: 1.7m 8s primary swell from a East-northeast direction and 0.4m 10s secondary swell from a South-southeast direction, 0.1m 12s secondary swell from a East direction (forecast issued at 08:00am August 17). The wind direction is predicted to be cross-onshore.

Time (-03) & DateWave HeightWave Period
Morning (17 Aug)5.5ft (1.7m)8s
Afternoon (17 Aug)5.5ft (1.7m)8s
Evening (17 Aug)7ft (2.1m)8s

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


Short Range Forecast

Mostly dry. Warm (max 31°C on Tue afternoon, min 18°C on Tue night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
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)
1
1
0
0
2
2
1
1
1
0
1
1
2
2
2
1
1
0
0
0
0
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)
2
ENE
8
1.7
ENE
8
1.7
ENE
8
1.7
ENE
8
2.1
NE
8
2.1
NE
8
2.1
NE
8
2.1
NE
8
2.1
NE
8
1.5
ENE
8
1.9
NE
8
1.8
NE
8
1.4
ENE
8
1.3
ENE
8
1.3
ENE
8
1.2
ENE
8
1.1
ENE
8
1.1
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
Wave Graph
Metric surfscale
Energy kJ
502
344
372
403
588
602
582
555
542
280
481
448
277
234
239
190
153
149
116
110
105
83
Wind (km/h)
20
NNE
25
NNE
25
NNE
20
NNE
15
NNE
20
NNE
20
N
15
N
15
N
15
N
20
NNE
15
NNE
15
SSW
10
SW
10
SSW
15
SSW
10
SSW
10
S
10
SSE
10
S
5
SSE
5
SE
Wind State
cross
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross
cross
glassy
High Tide
3:40AM0.73m
3:57PM0.60m
4:19AM0.67m
4:18PM0.58m
5:03AM0.59m
4:39PM0.55m
Low Tide
10:38AM0.26m
9:15PM0.26m
9:51AM0.35m
9:35PM0.25m
9:21AM0.40m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:43
6:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:53
5:53
 mm
Temp °C
18
19
24
24
21
20
19
20
20
24
30
31
22
22
19
18
18
20
21
20
19
19
Feels °C
16
17
22
22
20
19
18
19
19
24
29
30
22
22
19
17
19
21
22
21
21
22
  • 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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