Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 8 pm 29 Sep 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.2°C
1.5° 

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 (30 Sep):

  • Morning surf: Morning surf (30 Sep, local time) - 4.5ft (1.4m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (30 Sep, local time) - 4ft (1.2m), 8s period with E swell.
  • Evening surf: Evening surf (30 Sep, local time) - 4.5ft (1.3m), 7s period with S swell.

The current surf forecast for Siriu at 4AM is: 1.4m 8s primary swell from a East-northeast direction and 0.5m 11s secondary swell from a South direction (forecast issued at 08:00pm September 29). The wind direction is predicted to be glassy and the swell rating is 2.

Time (-03) & DateWave HeightWave Period
Morning (30 Sep)4.5ft (1.4m)8s
Afternoon (30 Sep)4ft (1.2m)8s
Evening (30 Sep)4.5ft (1.3m)7s

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


Short Range Forecast

Heavy rain (total 33mm), heaviest during Wed night. Warm (max 21°C on Tue night, min 14°C on Thu afternoon). Wind will be generally light.

Tue
29
Wednesday
30
Thursday
1
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
2
2
2
1
1
0
1
2
2
3
2
2
2
2
1
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
ENE
7
1.4
ENE
7
1.4
ENE
8
1.4
ENE
8
1.4
ENE
8
1.4
E
8
1.3
E
8
1.2
E
8
1.2
E
8
1.3
S
7
1.4
S
8
1.2
S
8
1.5
S
9
1.1
S
9
1
S
9
1.1
S
10
1.1
S
10
1.6
S
10
Wave Graph
Metric surfscale
Energy kJ
171
214
226
238
245
251
228
200
200
169
221
195
356
188
162
242
247
520
Wind (km/h)
25
N
15
N
10
SW
5
SSW
5
S
10
S
20
S
20
SSW
15
SSW
15
SSW
10
SSW
10
SSW
15
S
5
SW
5
SSE
10
S
15
SSW
15
SSW
Wind State
cross
cross-off
cross-off
glassy
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
glassy
glassy
cross
cross-off
cross-off
High Tide
3:35AM0.73m
3:15PM0.56m
4:20AM0.65m
9:38AM0.52m
3:31PM0.52m
Low Tide
9:27PM0.19m
11:15AM0.36m
8:37PM0.20m
8:08AM0.51m
12:48PM0.46m
8:28PM0.20m
rain showers
part cloud
part cloud
clear
cloud
cloud
light rain
mod rain
light rain
mod rain
light rain
light rain
light rain
cloud
cloud
cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
5:54
—
—
—
—
—
—
—
5:54
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:13
—
—
—
—
—
—
—
6:14
—
—
—
—
—
—
—
6:14
—
 mm
1
—
—
—
—
—
4
7
2
8
5
1
4
—
—
—
1
1
Temp °C
20
20
21
20
20
20
16
15
15
15
15
15
15
15
16
16
14
14
Feels °C
18
20
22
22
22
21
13
12
13
13
14
15
13
15
16
14
11
12
  • 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