Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 8 am 21 Oct 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.9°C
2.0° 

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 (21 Oct):

  • Morning surf: Morning surf (21 Oct, local time) - 4.5ft (1.4m), 11s period with SE swell.
  • Afternoon surf: Afternoon surf (21 Oct, local time) - 4.5ft (1.4m), 10s period with SE swell.
  • Evening surf: Evening surf (21 Oct, local time) - 4.5ft (1.4m), 10s period with SE swell.

The current surf forecast for Siriu at 3PM is: 1.4m 10s primary swell from a Southeast direction and 0.3m 9s secondary swell from a East direction (forecast issued at 08:00am October 21). The wind direction is predicted to be cross-onshore.

Time (-03) & DateWave HeightWave Period
Morning (21 Oct)4.5ft (1.4m)11s
Afternoon (21 Oct)4.5ft (1.4m)10s
Evening (21 Oct)4.5ft (1.4m)10s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Fri night. Warm (max 24°C on Fri afternoon, min 18°C on Wed morning). Wind will be generally light.

Wednesday
21
Thursday
22
Friday
23
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
2
0
0
0
1
1
1
0
0
0
0
0
1
0
0
1
2
1
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)
1.5
SSE
11
1.4
SE
11
1.4
SE
11
1.4
SE
10
1.4
SE
10
1.4
SE
10
1.3
SE
10
1.3
SE
10
1.2
SE
10
1.2
SE
10
1.2
SE
10
1.2
SE
10
1.2
SE
11
1.2
SE
12
1.1
SE
11
1.1
SE
11
1
SE
11
1.6
NE
7
0.9
SE
11
1.3
ENE
7
1.2
ENE
7
1.5
NE
7
Wave Graph
Metric surfscale
Energy kJ
533
467
458
392
370
370
335
369
298
298
296
313
344
376
315
263
224
220
187
142
138
200
Wind (km/h)
5
NNW
5
NE
15
NE
15
NE
10
NE
10
NNE
10
NNE
10
NNE
15
NE
15
NE
15
NE
15
NE
15
NNE
15
NNE
15
NNE
20
NNE
15
NNE
10
N
15
NNE
20
NE
15
NNE
10
N
Wind State
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross
High Tide
12:09PM0.72m
11:25PM0.63m
12:29PM0.75m
11:56PM0.70m
12:50PM0.75m
Low Tide
4:57AM0.10m
5:40PM0.29m
5:42AM0.05m
6:14PM0.23m
6:25AM0.02m
6:48PM0.19m
part cloud
part cloud
cloud
part cloud
cloud
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
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—
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5:31
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—
—
—
—
—
—
5:30
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
6:25
—
—
—
—
—
—
—
6:25
—
—
—
—
—
—
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6:27
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 mm
—
—
—
—
—
—
—
—
1
1
1
1
1
1
1
1
1
1
—
—
—
—
Temp °C
16
18
19
19
18
18
18
18
18
18
18
18
18
18
18
19
19
20
22
24
22
21
Feels °C
16
18
17
17
17
18
17
18
17
17
17
17
17
17
17
18
19
21
22
23
22
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 

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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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