Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 8 pm 18 Oct 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
19.4°C
1.4° 

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 (19 Oct):

  • Morning surf: Morning surf (19 Oct, local time) - 6ft (1.8m), 10s period with SSE swell.
  • Afternoon surf: Afternoon surf (19 Oct, local time) - 7ft (2.2m), 10s period with S swell.
  • Evening surf: Evening surf (19 Oct, local time) - 6ft (1.8m), 10s period with SSE swell.

The current surf forecast for Siriu at 5AM is: 2.5m 10s primary swell from a South direction and 2.0m 10s secondary swell from a South direction, 0.6m 10s secondary swell from a East direction (forecast issued at 08:00pm October 18). The wind direction is predicted to be offshore and the swell rating is 4.

Time (-03) & DateWave HeightWave Period
Morning (19 Oct)6ft (1.8m)10s
Afternoon (19 Oct)7ft (2.2m)10s
Evening (19 Oct)6ft (1.8m)10s

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


Short Range Forecast

Mostly dry. Warm (max 20°C on Wed morning, min 12°C on Sun night). Wind will be generally light.

Sun
18
Monday
19
Tuesday
20
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)
!
!
!
4
3
3
1
2
2
3
3
3
3
3
2
1
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
S
11
3
S
10
3
S
10
2.5
S
10
1.9
SSE
10
1.8
SSE
10
1.8
SSE
10
2.2
S
10
1.9
SSE
10
1.8
SSE
10
1.8
SSE
10
1.7
SSE
10
1.7
SSE
10
1.6
SSE
10
1.6
SSE
10
1.5
SSE
10
1.4
SSE
10
1.4
SSE
10
Wave Graph
Metric surfscale
Energy kJ
1897
1827
1792
1535
769
667
653
932
684
676
731
659
570
500
490
427
378
386
Wind (km/h)
20
SSW
10
WSW
10
WSW
10
WSW
5
WSW
5
SSW
10
SSE
15
SSE
10
S
15
SW
10
WSW
10
WSW
10
WSW
5
SSE
10
SE
10
ESE
5
ENE
5
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
off
glassy
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
on
glassy
cross
High Tide
5:14PM0.48m
11:34AM0.63m
10:13PM0.47m
11:50AM0.68m
Low Tide
3:35PM0.47m
3:01AM0.23m
4:27PM0.41m
4:06AM0.17m
5:05PM0.35m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
5:33
—
—
—
—
—
—
—
5:33
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:23
—
—
—
—
—
—
—
6:23
—
—
—
—
—
—
—
6:24
—
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
16
15
13
13
12
16
18
17
16
15
14
13
13
17
17
17
17
16
Feels °C
11
13
10
10
10
14
15
14
14
13
12
11
12
16
16
16
17
15
  • 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.


Nearest locationNearest