Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 2 am 30 Sep 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.6°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 (30 Sep):

  • Morning surf: Morning surf (30 Sep, local time) - 4.5ft (1.4m), 8s period with ENE swell.
  • Afternoon surf: Afternoon surf (30 Sep, local time) - 4.5ft (1.3m), 8s period with E swell.
  • Evening surf: Evening surf (30 Sep, local time) - 3.5ft (1.1m), 8s period with E swell.

The current surf forecast for Siriu at 9AM is: 1.4m 8s primary swell from a East-northeast direction and 0.4m 10s secondary swell from a South-southeast direction (forecast issued at 02:00am September 30). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (-03) & DateWave HeightWave Period
Morning (30 Sep)4.5ft (1.4m)8s
Afternoon (30 Sep)4.5ft (1.3m)8s
Evening (30 Sep)3.5ft (1.1m)8s

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


Short Range Forecast

Heavy rain (total 43mm), heaviest during Wed morning. Warm (max 20°C on Wed morning, min 14°C on Thu afternoon). Wind will be generally light.

Wednesday
30
Thursday
1
Friday
2
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)
2
2
2
1
0
0
2
2
2
1
3
2
1
2
1
2
3
3
3
3
3
2
2
3
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)
1.4
E
8
1.4
ENE
8
1.4
ENE
8
1.4
ENE
8
1.4
E
8
1.3
E
8
1.2
E
8
1.1
E
8
1.1
E
8
1.2
S
8
1.3
S
8
1.1
S
9
1
S
9
1.3
S
9
1
S
10
1.1
S
10
1.5
S
10
1.7
S
10
1.7
S
10
1.7
S
10
1.8
S
10
1.6
S
10
1.6
S
10
1.6
S
10
Wave Graph
Metric surfscale
Energy kJ
221
238
245
257
264
228
200
169
169
169
212
184
162
300
188
233
414
518
524
524
587
490
530
530
Wind (km/h)
15
SW
5
SSW
5
SSW
5
S
15
S
15
S
15
SSW
10
SSW
5
S
10
S
10
SSW
5
S
5
SSE
15
S
15
SSW
15
SSW
10
SW
15
SSW
15
SSW
15
SSW
10
SSE
10
SSE
5
SSE
0
E
Wind State
cross-off
glassy
glassy
cross
cross
cross
cross-off
cross-off
cross-off
cross
cross-off
glassy
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
glassy
High Tide
3:35AM0.73m
3:15PM0.56m
4:20AM0.65m
9:38AM0.52m
3:31PM0.52m
5:19AM0.56m
10:51AM0.62m
Low Tide
11:15AM0.36m
8:37PM0.20m
8:08AM0.51m
12:48PM0.46m
8:28PM0.20m
7:31AM0.52m
8:40PM0.23m
clear
part cloud
light rain
light rain
heavy rain
light rain
light rain
mod rain
light rain
light rain
mod rain
light rain
cloud
cloud
light rain
cloud
part cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
5:54
—
—
—
—
—
—
—
5:54
—
—
—
—
—
—
—
5:52
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
—
6:14
—
—
—
—
—
—
—
6:14
—
—
—
—
—
—
—
6:15
—
 mm
—
—
1
1
14
4
1
7
5
1
8
1
—
—
1
—
—
—
—
—
—
—
—
—
Temp °C
21
20
20
20
17
16
15
15
15
15
15
16
17
16
14
14
14
15
15
16
16
15
15
15
Feels °C
21
22
22
22
15
14
13
13
15
15
14
16
17
14
11
12
12
13
13
14
14
13
14
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.


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