Siriu surfForecast / Santa Catarina – Sul / Brazil

information circle48hr Weather and Surf, issued 8 pm Saturday 16 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
21.3° C
(Which is slightly cooler than normal)

How big are the waves at Siriu today?

The current surf forecast for Siriu at 3AM is: 1.0m 11s primary swell from a South direction and 0.2m 7s secondary swell from a East direction (forecast issued at 08:00pm May 16). The wind direction is predicted to be glassy and the swell rating is 2.

Time (-03) & DateWave HeightWave Period
Morning (17 May)3ft (0.9m)10s
Afternoon (17 May)2.5ft (0.8m)10s
Evening (17 May)2.5ft (0.7m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 25mm), heaviest during Sun night. Warm (max 21°C on Sun morning, min 13°C on Mon afternoon). Winds increasing (calm on Sat night, fresh winds from the SW by Mon morning).

Sat
16
Sunday
17
Monday
18
Tuesday
19
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)
1
1
2
2
2
1
0
0
1
1
1
1
1
2
1
1
1
2
2
3
3
5
3
3
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.1
SSE
11
1.1
SSE
11
1
S
11
1
S
11
1
S
10
0.9
SSE
10
0.9
SSE
10
0.8
SSE
10
0.8
S
10
0.7
S
10
0.7
S
10
1.1
S
10
1.7
S
7
2.3
S
7
1.7
S
7
1.7
S
7
1.7
S
7
2.3
S
7
2.2
S
8
1.8
S
8
1.6
S
8
1.9
SSE
17
2.2
SSE
16
2.3
SSE
16
Wave Graph
Metric surfscale
Energy kJ
286
286
229
229
225
177
170
133
125
94
92
223
278
509
263
279
303
572
534
377
287
2072
2429
2511
Wind (km/h)
10
NE
10
N
5
N
5
WNW
10
SW
10
SSW
10
SSE
10
SSE
15
SSW
15
SW
15
WSW
20
SSW
25
SW
25
SW
30
SW
25
SW
25
SW
20
SW
20
SW
20
SW
15
SW
15
SW
15
SSW
15
S
cross-on
cross
glassy
glassy
cross-off
cross-off
cross-on
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
cross-off
cross-off
cross
cross
High Tide
1:35AM0.55m
2:47PM0.78m
1:51AM0.53m
3:30PM0.73m
2:11AM0.55m
Low Tide
9:10PM0.23m
8:39AM0.09m
10:06PM0.33m
9:18AM0.08m
11:03PM0.43m
10:05AM0.09m
part cloud
cloud
clear
part cloud
part cloud
part cloud
clear
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
part cloud
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:50
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
5:30
5:30
1
4
3
5
4
2
2
1
1
1
1
Temp °C
19
19
18
18
18
19
21
19
19
18
18
17
16
15
14
13
13
13
13
13
13
15
18
17
19
20
19
20
19
20
22
20
19
17
17
15
13
12
9
8
9
9
9
10
10
12
15
15
Swell 1
Height (m)
Direction
Period (s)
1.1
SSE
11
1.1
SSE
11
1
S
11
1
S
11
1
S
10
0.9
SSE
10
0.9
SSE
10
0.8
SSE
10
0.8
S
10
0.7
S
10
0.7
S
10
0.2
SSE
16
0.2
SSE
15
1.7
SSE
7
0.3
SSE
14
0.3
SSE
13
0.3
SSE
13
1.7
S
7
1.7
SSE
7
1.4
S
8
1.2
S
7
1.9
SSE
17
2.2
SSE
16
2.3
SSE
16
Energy kJ
286
286
229
229
225
177
170
133
125
94
92
24
22
293
38
35
33
315
327
217
156
2072
2429
2511
Swell 2
Height (m)
Direction
Period (s)
0.2
E
8
0.2
E
8
0.2
E
4
0.2
E
7
0.2
ENE
7
0.2
ESE
5
0.2
ESE
5
0.2
ESE
4
0.2
ENE
5
0.2
ENE
7
0.2
E
7
0.2
E
7
0.2
E
7
0.3
SSE
15
0.1
SE
17
0.2
SSE
16
0.4
SSE
12
0.4
SSE
12
0.8
ESE
6
0.9
SSE
14
0.8
ESE
6
0.6
ESE
6
0.5
ESE
6
Energy kJ
4
4
1
4
5
2
2
2
3
5
4
4
4
42
11
25
51
47
51
273
42
29
20
Swell 3
Height (m)
Direction
Period (s)
0.2
E
8
0.2
E
7
0.2
E
7
0.1
SE
12
0.1
SE
12
0.2
ENE
7
0.2
ENE
7
0.2
ENE
7
0.1
E
7
0.1
SE
16
0.2
SSE
16
0.1
SE
15
0.1
S
15
0.1
SE
11
0.2
SSE
16
0.3
SSE
15
0.5
SSE
14
0.8
ESE
6
0.1
SE
11
Energy kJ
4
4
4
6
6
5
5
5
1
11
25
9
4
5
25
44
120
45
4
Wind waves
Height (m)
Direction
Period (s)
0.3
SE
4
0.5
S
4
0.5
S
4
1.1
S
10
1.7
S
7
2.3
S
7
1.7
S
7
1.7
S
7
1.7
S
7
2.3
S
7
2.2
S
8
1.8
S
8
1.6
S
8
1.9
S
13
Energy kJ
3
6
9
223
278
509
263
279
303
572
534
377
287
1210
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
1
1
1
1
1
1
1
2
2
2
2
2
2
3
3
3
5
4
4
Distance (km)
20
6
0
0
0
0
13
13
0
0
0
13
10
10
15
10
10
10
10
0
0
0
10
10
Best forecast wave conditions in Santa Catarina - Sul
Rating
(10 max)
2
2
2
2
2
2
1
1
1
1
2
1
2
3
2
2
2
3
3
3
4
5
5
4
Best forecast wave conditions in Brazil
Rating
(10 max)
3
3
2
2
2
2
1
1
1
1
2
2
2
3
3
3
3
3
3
3
4
5
5
4
Header Global
Rating
(10 max)
5
5
4
4
6
9
9
7
4
4
5
7
5
4
5
4
4
4
4
5
5
4
4
5
  • 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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