Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 2 am 20 Oct 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.9°C
1.9° 

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 Oct):

  • Morning surf: Morning surf (20 Oct, local time) - 5.5ft (1.7m), 10s period with SSE swell.
  • Afternoon surf: Afternoon surf (20 Oct, local time) - 5ft (1.5m), 10s period with SSE swell.
  • Evening surf: Evening surf (20 Oct, local time) - 5ft (1.5m), 10s period with SSE swell.

The current surf forecast for Siriu at 7AM is: 1.7m 10s primary swell from a South-southeast direction and 0.3m 9s secondary swell from a East-southeast direction (forecast issued at 02:00am October 20). The wind direction is predicted to be offshore and the swell rating is 3.

Time (-03) & DateWave HeightWave Period
Morning (20 Oct)5.5ft (1.7m)10s
Afternoon (20 Oct)5ft (1.5m)10s
Evening (20 Oct)5ft (1.5m)10s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Thu morning. Very mild (max 19°C on Wed morning, min 16°C on Tue night). Wind will be generally light.

Tuesday
20
Wednesday
21
Thursday
22
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
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
3
3
3
3
2
1
2
2
3
3
3
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SSE
10
1.7
SSE
10
1.7
SSE
10
1.7
SSE
10
1.6
SSE
10
1.5
SSE
10
1.5
SSE
10
1.5
SSE
10
1.5
SSE
10
1.5
SSE
11
1.5
SSE
11
1.4
SE
11
1.4
SE
11
1.3
SSE
10
1.4
SE
10
1.3
SE
10
1.3
SSE
10
1.2
SE
10
1.3
SE
10
1.3
SE
10
1.3
SE
10
1.2
SE
10
1.2
SE
11
1.2
SE
12
Wave Graph
Metric surfscale
Energy kJ
731
659
634
559
490
427
427
436
504
533
533
467
458
361
377
362
347
304
335
328
335
313
357
383
Wind (km/h)
10
SW
10
WSW
10
WSW
5
S
10
SSE
10
SE
5
ESE
0
ENE
5
NNW
5
N
5
NNW
10
NE
15
ENE
15
NE
15
NE
10
NE
10
NE
10
NE
10
NE
15
NNE
15
NE
15
NNE
15
NNE
15
NNE
Wind State
cross-off
cross-off
off
glassy
cross-on
cross-on
glassy
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
11:50AM0.68m
10:52PM0.55m
12:09PM0.72m
11:25PM0.63m
12:29PM0.75m
Low Tide
4:06AM0.17m
5:05PM0.35m
4:57AM0.10m
5:40PM0.29m
5:42AM0.05m
6:14PM0.23m
clear
clear
clear
clear
part cloud
clear
cloud
clear
cloud
cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
5:33
—
—
—
—
—
—
—
5:31
—
—
—
—
—
—
—
5:31
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
—
6:24
—
—
—
—
—
—
—
6:25
—
—
—
—
—
—
—
6:25
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1
1
—
—
Temp °C
14
14
14
17
17
17
17
16
16
16
16
18
19
19
18
18
18
18
18
18
18
18
18
18
Feels °C
12
13
13
16
16
15
17
16
16
16
16
17
17
17
16
17
17
17
17
17
17
17
17
17
  • 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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