Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 8 am 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 (29 Sep):

  • Morning surf: Morning surf (29 Sep, local time) - 4.5ft (1.3m), 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) - 6ft (1.8m), 7s period with ENE swell.

The current surf forecast for Siriu at 4PM is: 1.5m 7s primary swell from a East-northeast direction and 0.4m 12s secondary swell from a South-southeast direction, 0.3m 8s secondary swell from a South-southeast direction (forecast issued at 08:00am September 29). The wind direction is predicted to be cross-shore.

Time (-03) & DateWave HeightWave Period
Morning (29 Sep)4.5ft (1.3m)7s
Afternoon (29 Sep)5ft (1.5m)7s
Evening (29 Sep)6ft (1.8m)7s

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


Short Range Forecast

Heavy rain (total 40mm), heaviest during Wed night. Warm (max 23°C on Tue morning, min 15°C on Wed afternoon). Winds decreasing (fresh winds from the NNE on Tue morning, light winds from the S by Thu morning).

Tuesday
29
Wednesday
30
Thursday
1
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)
0
0
0
0
1
3
2
2
2
1
0
1
1
2
2
1
1
2
1
2
3
3
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)
1.3
ENE
7
1.3
E
7
1.3
ENE
7
1.5
ENE
7
1.7
ENE
7
1.8
ENE
7
1.5
E
8
1.5
E
8
1.5
E
8
1.5
E
8
1.3
E
8
1.3
E
8
1.2
E
8
1.1
E
8
1.1
E
8
1.1
E
8
1
E
8
1
E
8
1.2
S
8
1.3
S
9
1.4
S
9
1.5
S
9
Wave Graph
Metric surfscale
Energy kJ
166
163
166
198
301
344
265
272
286
295
228
234
200
169
165
165
133
133
205
257
325
397
Wind (km/h)
20
NNE
15
NNE
25
NNE
20
NE
20
N
15
N
5
SW
10
SSW
10
S
15
SSW
15
S
15
SSW
15
SSW
10
SSW
10
SW
10
S
10
S
10
SSW
5
S
10
S
15
SSW
10
SSW
Wind State
cross
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross-off
High Tide
2:56PM0.61m
3:35AM0.73m
3:15PM0.56m
4:20AM0.65m
9:38AM0.52m
3:31PM0.52m
Low Tide
10:12AM0.24m
9:27PM0.19m
11:15AM0.36m
8:37PM0.20m
8:08AM0.51m
12:48PM0.46m
8:28PM0.20m
part cloud
rain showers
part cloud
cloud
light rain
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
mod rain
mod rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
—
—
—
—
—
—
5:54
—
—
—
—
—
—
—
5:54
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
6:13
—
—
—
—
—
—
—
6:14
—
—
—
—
—
—
—
6:14
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 mm
—
1
—
—
3
—
—
—
—
—
4
5
6
9
4
4
4
—
—
—
—
—
Temp °C
18
21
23
23
20
21
21
20
19
19
17
15
15
15
15
15
15
16
16
16
15
15
Feels °C
16
20
21
22
20
22
23
21
20
18
15
13
13
14
14
15
14
15
15
14
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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