Siriu surfForecast / Santa Catarina – Sul / Brazil

information circle48hr Weather and Surf, issued 8 pm Thursday 21 May 2026 -03
Forecast update in hr  min  s Forecast update imminent
Siriu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Siriu sea temperature is
20.4° C
(Which is 1.1°C colder than average for this time of year)

How big are the waves at Siriu today?

The current surf forecast for Siriu at 11PM is: 2.5m 14s primary swell from a South-southeast direction (forecast issued at 08:00pm May 21). The wind direction is predicted to be offshore and the swell rating is 4.

Time (-03) & DateWave HeightWave Period
Morning (21 May)--
Afternoon (21 May)--
Evening (21 May)8ft (2.5m)14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 10mm), heaviest on Fri night. Warm (max 20°C on Sun morning, min 12°C on Thu night). Wind will be generally light.

Thu
21
Friday
22
Saturday
23
Sunday
24
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
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
3
4
4
4
4
4
3
3
4
4
4
4
3
3
3
3
3
3
3
2
2
2
3
2
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.5
SSE
14
2.5
SSE
14
2.5
SSE
14
2.5
SSE
14
2.4
SSE
14
2.3
SSE
14
2.2
SSE
14
2.2
SSE
14
2.1
SSE
14
2
SSE
13
1.9
SSE
13
1.8
SSE
13
1.7
SSE
13
1.6
SSE
12
1.5
SSE
12
1.4
SSE
12
1.3
SSE
12
1.2
SSE
12
1.1
SSE
11
1.1
SSE
11
1.1
S
11
1.1
S
11
1.4
SSE
11
1.7
S
11
Wave Graph
Metric surfscale
Energy kJ
2409
2267
2541
2638
2411
2137
1937
1910
1677
1422
1211
1025
903
742
599
505
486
411
320
303
286
286
460
657
Wind (km/h)
20
S
15
SW
15
WSW
10
WSW
10
WSW
5
SW
10
SSE
10
SSE
10
SSW
10
WSW
10
WSW
10
WNW
5
NNW
5
WNW
5
N
5
SE
0
SE
5
SSW
10
WSW
10
WSW
10
WSW
10
WSW
15
SSW
20
S
cross
cross-off
cross-off
off
off
glassy
cross-on
cross
cross-off
off
off
cross-off
cross-off
glassy
glassy
glassy
glassy
glassy
cross-off
off
off
cross-off
cross-off
cross
High Tide
10:39PM0.66m
3:47AM0.59m
11:24PM0.64m
4:48AM0.57m
11:54PM0.61m
6:16AM0.53m
Low Tide
1:57AM0.57m
1:26PM0.17m
2:50AM0.55m
2:35PM0.19m
3:37AM0.49m
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
part cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:29
5:29
5:28
1
3
4
2
Temp °C
14
13
13
13
12
14
17
17
16
15
14
13
13
15
16
16
15
16
15
15
15
17
20
20
10
10
10
11
10
12
15
15
16
15
13
12
12
15
16
16
16
16
14
14
14
16
18
17
Swell 1
Height (m)
Direction
Period (s)
2.5
SSE
14
2.5
SSE
14
2.5
SSE
14
2.5
SSE
14
2.4
SSE
14
2.3
SSE
14
2.2
SSE
14
2.2
SSE
14
2.1
SSE
14
2
SSE
13
1.9
SSE
13
1.8
SSE
13
1.7
SSE
13
1.6
SSE
12
1.5
SSE
12
1.4
SSE
12
1.3
SSE
12
1.2
SSE
12
1.3
ESE
6
1.3
ESE
6
1.2
ESE
6
1.2
ESE
7
1.1
E
8
1
SSE
6
Energy kJ
2409
2267
2541
2638
2411
2137
1937
1910
1677
1422
1211
1025
903
742
599
505
486
411
136
122
114
147
135
77
Swell 2
Height (m)
Direction
Period (s)
1.1
E
6
1.1
E
6
0.9
E
6
0.8
E
5
0.7
ESE
5
0.8
ESE
6
1.1
ESE
6
1.1
SSE
11
1.1
SSE
11
1.1
S
11
1.1
S
11
1.1
S
11
1
E
8
Energy kJ
75
75
49
36
28
39
88
320
303
286
286
274
115
Swell 3
Height (m)
Direction
Period (s)
0.1
E
10
0.1
E
10
0.1
E
9
0.5
SE
6
0.9
SSE
6
0.8
SSE
6
1
S
11
Energy kJ
2
2
2
16
64
41
229
Wind waves
Height (m)
Direction
Period (s)
0.8
E
5
1.2
ESE
6
1.5
ESE
6
1.7
ESE
6
0.4
SW
3
1.4
SSE
11
1.7
S
11
Energy kJ
31
90
159
220
2
460
657
Nearest Offshore or Glassy
Rating
(10 max)
5
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
2
3
4
3
3
2
Distance (km)
13
38
21
0
0
0
0
0
10
13
0
0
0
0
0
0
0
0
13
0
0
0
0
0
Best forecast wave conditions in Santa Catarina - Sul
Rating
(10 max)
5
4
4
4
5
5
5
4
4
4
4
4
4
4
4
3
3
3
3
3
4
3
3
3
Best forecast wave conditions in Brazil
Rating
(10 max)
5
4
4
4
5
5
4
4
4
4
4
5
4
4
4
4
4
4
3
3
4
3
3
3
Header Global
Rating
(10 max)
5
5
5
4
5
7
7
7
6
6
6
5
6
7
8
8
7
6
5
5
5
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

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