Siriu Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 2 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
16.7°C
2.2° 

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 (12 Sep):

  • Morning surf: Morning surf (12 Sep, local time) - 2.5ft (0.8m), 8s period with ENE swell.
  • Afternoon surf: Afternoon surf (12 Sep, local time) - 4.5ft (1.4m), 7s period with S swell.
  • Evening surf: Evening surf (12 Sep, local time) - 5.5ft (1.7m), 7s period with S swell.

The current surf forecast for Siriu at 7AM is: 0.9m 8s primary swell from a East-northeast direction and 0.4m 10s secondary swell from a South direction (forecast issued at 02:00am September 12). An open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (-03) & DateWave HeightWave Period
Morning (12 Sep)2.5ft (0.8m)8s
Afternoon (12 Sep)4.5ft (1.4m)7s
Evening (12 Sep)5.5ft (1.7m)7s

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


Short Range Forecast

Moderate rain (total 17mm), heaviest on Sun night. Very mild (max 18°C on Sat morning, min 13°C on Sun night). Wind will be generally light.

Saturday
12
Sunday
13
Monday
14
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)
1
0
1
0
1
1
1
2
1
1
1
1
0
0
2
1
2
2
2
2
2
2
2
2
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
ENE
8
0.9
ENE
8
0.9
ENE
8
0.8
ENE
8
1.2
S
6
1.4
S
7
1.5
S
7
1.7
S
7
1.6
S
7
1.2
S
7
1
SSE
7
0.7
SE
7
0.8
S
7
0.9
S
7
0.9
SE
8
0.9
SE
8
0.9
SE
8
0.7
S
12
0.9
S
12
1
S
11
1
S
11
1
S
11
1
S
10
1
S
8
Wave Graph
Metric surfscale
Energy kJ
116
93
83
67
119
200
236
295
247
134
105
47
66
81
107
99
106
139
220
240
227
223
179
143
Wind (km/h)
10
SW
20
SSW
15
SW
20
SSW
20
SSW
20
SSW
20
SSW
20
SSW
15
SW
15
SW
15
SW
15
SW
15
SW
15
SW
15
SW
10
SW
15
SW
10
SW
10
SW
10
SW
10
SW
10
SSW
10
SSW
5
SW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
2:21PM0.67m
2:14AM0.81m
2:36PM0.66m
2:48AM0.78m
2:54PM0.65m
Low Tide
8:55AM0.05m
8:43PM0.24m
9:19AM0.14m
8:48PM0.21m
9:36AM0.23m
8:47PM0.18m
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:15
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:06
6:06
 mm
1
1
2
4
1
1
2
2
1
1
Temp °C
19
17
17
17
18
17
16
16
15
15
15
15
15
15
14
14
14
13
13
13
14
14
14
14
Feels °C
19
14
15
15
15
13
12
13
12
12
12
12
12
12
12
12
12
11
11
11
13
13
13
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 

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