Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 8 pm 28 Sep 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.5°C
1.1° 

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 (29 Sep):

  • Morning surf: Morning surf (29 Sep, local time) - 4ft (1.2m), 7s period with E swell.
  • Afternoon surf: Afternoon surf (29 Sep, local time) - 5ft (1.5m), 7s period with ENE swell.
  • Evening surf: Evening surf (29 Sep, local time) - 4.5ft (1.4m), 7s period with ENE swell.

The current surf forecast for Siriu at 1AM is: 1.1m 7s primary swell from a East direction and 0.4m 10s secondary swell from a South-southeast direction (forecast issued at 08:00pm September 28). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (-03) & DateWave HeightWave Period
Morning (29 Sep)4ft (1.2m)7s
Afternoon (29 Sep)5ft (1.5m)7s
Evening (29 Sep)4.5ft (1.4m)7s

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


Short Range Forecast

Heavy rain (total 40mm), heaviest during Tue afternoon. Warm (max 24°C on Tue afternoon, min 15°C on Wed afternoon). Winds increasing (calm on Mon night, fresh winds from the NNE by Tue morning).

Mon
28
Tuesday
29
Wednesday
30
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
1
0
0
0
0
0
0
0
1
2
2
2
1
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
E
6
0.9
E
6
1
E
7
1.1
E
7
1.2
E
7
1.2
E
7
1.5
ENE
7
1.5
ENE
7
1.4
ENE
7
1.4
ENE
7
1.6
ENE
8
1.5
E
8
1.5
E
8
1.5
E
8
1.4
E
8
1.3
E
8
1.2
E
8
1.2
E
8
Wave Graph
Metric surfscale
Energy kJ
57
68
89
113
139
138
198
198
197
220
273
272
287
295
264
234
200
201
Wind (km/h)
10
S
5
WNW
15
N
15
NNE
20
NNE
25
NNE
25
NNE
20
NE
20
NNE
20
N
10
N
5
SW
10
SSW
5
S
15
S
20
SSW
20
SSW
15
SSW
Wind State
cross
glassy
cross
cross
cross
cross
cross-on
cross-on
cross
cross-off
cross-off
glassy
cross-off
cross
cross
cross-off
cross-off
cross-off
High Tide
2:55AM0.79m
2:56PM0.61m
3:35AM0.73m
3:15PM0.56m
Low Tide
9:10PM0.18m
10:12AM0.24m
9:27PM0.19m
11:15AM0.36m
8:37PM0.20m
light rain
mod rain
clear
clear
clear
part cloud
part cloud
part cloud
heavy rain
light rain
part cloud
part cloud
part cloud
part cloud
mod rain
cloud
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
5:56
—
—
—
—
—
—
—
5:54
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:13
—
—
—
—
—
—
—
6:13
—
—
—
—
—
—
—
6:14
—
 mm
2
6
—
—
—
—
—
—
13
1
—
—
—
—
6
—
1
9
Temp °C
20
19
19
18
18
21
23
24
20
21
21
20
20
20
18
16
15
15
Feels °C
21
21
18
16
16
19
21
24
19
21
23
22
21
21
17
13
12
13
  • 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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