Siriu Surf Break

Lat Long: 28.00° S 48.63° W

Siriu 48 hour detailed Surf Forecast

Issued: 2 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.7°C
0.2° 

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 (04 Sep):

  • Morning surf: Morning surf (04 Sep, local time) - 2.5ft (0.7m), 10s period with SE swell.
  • Afternoon surf: Afternoon surf (04 Sep, local time) - 2.5ft (0.8m), 8s period with ENE swell.
  • Evening surf: Evening surf (04 Sep, local time) - 3ft (0.9m), 8s period with ENE swell.

The current surf forecast for Siriu at 8AM is: 0.7m 11s primary swell from a Southeast direction and 0.5m 8s secondary swell from a East direction, 0.6m 4s secondary swell from a South direction (forecast issued at 02:00am September 04). The wind direction is predicted to be cross-offshore.

Time (-03) & DateWave HeightWave Period
Morning (04 Sep)2.5ft (0.7m)10s
Afternoon (04 Sep)2.5ft (0.8m)8s
Evening (04 Sep)3ft (0.9m)8s

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


Short Range Forecast

Heavy rain (total 20mm), heaviest during Sat afternoon. Very mild (max 17°C on Fri afternoon, min 9°C on Sun night). Winds increasing (light winds from the SSW on Sat morning, fresh winds from the SSW by Sun afternoon).

Friday
4
Saturday
5
Sunday
6
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
1
0
0
0
0
0
1
1
1
2
1
2
2
2
1
1
2
1
1
1
2
3
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
SE
11
0.8
SE
11
0.8
SE
11
0.7
SE
10
0.7
SE
10
0.8
ENE
8
0.8
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.8
S
10
0.9
S
9
1.2
S
9
1.4
S
9
1.2
S
8
1.3
S
8
1.9
S
7
1.5
S
7
1.9
S
8
2.2
S
9
2.4
S
10
2.3
S
10
2.5
S
9
Wave Graph
Metric surfscale
Energy kJ
228
165
137
108
102
71
71
92
96
125
125
125
134
230
304
204
228
326
243
447
708
1102
1013
1148
Wind (km/h)
10
NW
20
SSW
15
SSW
20
SSW
15
S
15
S
10
S
5
SSW
10
SSW
10
SSW
10
SSW
5
SSW
10
SW
10
SW
15
SSW
20
SW
15
SW
15
SW
15
SW
20
SW
25
SSW
25
SSW
25
SSW
20
SW
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
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
11:44AM0.63m
00:04AM0.36m
12:25PM0.73m
00:19AM0.41m
1:01PM0.79m
Low Tide
1:56AM0.30m
9:10PM0.30m
3:36AM0.25m
9:01PM0.34m
4:52AM0.16m
6:52PM0.34m
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
mod rain
light rain
cloud
part cloud
clear
clear
clear
cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:24
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:01
6:02
 mm
2
2
2
2
2
2
6
2
Temp °C
19
17
16
16
16
17
15
15
14
14
13
14
14
13
14
14
14
12
11
12
14
13
13
12
Feels °C
19
14
14
13
13
14
13
14
13
12
12
13
12
11
10
10
10
8
7
7
7
5
6
6
  • 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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