Surf Forecasts and Marine Weather - No Hype - Just the Facts!
El Nino - The Shocking Truth Behind the Models! - Watch the Video HERE (4/12/26)
Buoys | Buoy Forecast | Bulletins | Models: Wave - Weather - Surf - Altimetry - Snow | Pacific Forecast | QuikCAST | El Nino | Tutorials | Great Circles | Video

Google
Create Your Own Surf Forecast
Swell Calculator
Swell Decay Tables
Sea Height Tables
Swell Category Table
.

Surf Spot Forecast Graph
Surf Size, Swell Size, Swell Period & Direction, Wind Speed & Direction

 

Viseau
Coordinates: -0.5S -46.25W
Start Time (GMT): 00Z17APR2026
Local Time Zone: GMT -3
© Stormsurf 2026

Surf Hgt
ft
5
4
3
2
1

0.9

0.6

0.6

2.7

3.8

3.8

3.7

3.6

3.5

3.4

3.4

3.2

3.2

3.1

1.5

1.4

1.5

1.4

3.2

1.5

1.5

2.9

2.8

2.8

2.7

2.8

2.1

1.0

2.8

2.9

2.7

2.6

2.5

2.4

2.3

2.3

2.2

2.2

2.1

2.1

2.0

2.0

1.9

1.9

1.9

2.1

1.7

1.4

1.3

1.6

1.6

1.6

1.6

1.6

1.5

1.4

1.4

1.6

1.5

1.5

1.4

Wind
kts
30
25
20
15
10
5

14

16

15

12

11

9

10

10

10

9

10

9

7

9

15

15

15

12

10

12

12

10

6

9

10

10

13

14

7

5

6

8

5

7

9

8

12

9

10

12

14

12

9

8

5

15

14

9

8

10

6

5

5

10

14

9

10

8

6

10

8

WDir
dg
WDir
dg

ENE

ENE

ENE

ENE

ENE

ENE

ENE

ENE

ENE

ENE

ENE

NE

ENE

ENE

ENE

ENE

NE

ENE

ENE

ENE

ENE

ENE

ENE

ENE

E

E

E

ENE

NE

NNE

NNW

NNW

NW

WNW

WSW

SW

S

SW

WNW

WNW

WNW

WNW

NW

WNW

WSW

WSW

WSW

WSW

W

WNW

NW

NNE

ENE

ESE

SE

ESE

E

ENE

E

ESE

SE

   

16 Th 21

17 Fr 12

17 Fr 03

17 Fr 06

17 Fr 09

17 Fr 24

17 Fr 15

17 Fr 18

17 Fr 21

18 Sa 12

18 Sa 03

18 Sa 06

18 Sa 09

18 Sa 24

18 Sa 15

18 Sa 18

18 Sa 21

19 Su 12

19 Su 03

19 Su 06

19 Su 09

19 Su 24

19 Su 15

19 Su 18

19 Su 21

20 Mo 12

20 Mo 03

20 Mo 06

20 Mo 09

20 Mo 24

20 Mo 15

20 Mo 18

20 Mo 21

21 Tu 12

21 Tu 03

21 Tu 06

21 Tu 09

21 Tu 24

21 Tu 15

21 Tu 18

21 Tu 21

22 We 12

22 We 03

22 We 06

22 We 09

22 We 24

22 We 15

22 We 18

22 We 21

23 Th 12

23 Th 03

23 Th 06

23 Th 09

23 Th 24

23 Th 15

23 Th 18

23 Th 21

24 Fr 12

24 Fr 03

24 Fr 06

24 Fr 09

Date/Day/Time (Local - 24 hr)
Swell Hgt
ft

6

5

4

3

2

1

0.7

0.4

0.5

2.5

4.6

4.6

4.6

4.5

4.4

4.3

4.2

4.1

4.0

3.9

1.1

1.1

1.2

1.2

4.1

1.3

1.4

3.8

3.6

3.5

3.4

3.4

2.2

0.9

4.1

3.8

3.6

3.5

3.3

3.2

3.1

3.1

3.1

3.0

2.9

2.8

2.7

2.6

2.6

2.6

2.6

2.9

2.3

2.7

2.3

2.2

2.2

2.2

2.3

2.2

2.2

2.0

1.9

2.2

2.1

2.1

1.9

Swell Per
sec

25

20

15

10

5

13.2

14.4

13.7

11.0

8.3

8.2

8.1

8.0

7.9

8.0

8.0

7.9

7.9

7.9

12.7

12.5

12.3

11.8

7.7

11.5

10.9

7.7

7.8

7.9

8.0

8.1

9.3

11.2

6.9

7.7

7.6

7.5

7.5

7.5

7.4

7.4

7.3

7.3

7.4

7.5

7.5

7.5

7.4

7.4

7.3

7.2

7.3

5.3

5.4

7.4

7.3

7.3

7.2

7.1

7.0

7.0

7.0

7.0

7.0

7.2

7.2

SDir
dg
SDir
dg

19

20

20

29

38

37

36

34

34

34

34

34

33

34

16

15

15

14

38

14

14

40

38

37

37

38

26

15

46

42

38

35

34

34

33

33

33

33

32

33

34

33

32

31

31

20

36

312

317

36

37

38

39

39

31

31

32

44

40

44

40

   

16 Th 21

17 Fr 12

17 Fr 03

17 Fr 06

17 Fr 09

17 Fr 24

17 Fr 15

17 Fr 18

17 Fr 21

18 Sa 12

18 Sa 03

18 Sa 06

18 Sa 09

18 Sa 24

18 Sa 15

18 Sa 18

18 Sa 21

19 Su 12

19 Su 03

19 Su 06

19 Su 09

19 Su 24

19 Su 15

19 Su 18

19 Su 21

20 Mo 12

20 Mo 03

20 Mo 06

20 Mo 09

20 Mo 24

20 Mo 15

20 Mo 18

20 Mo 21

21 Tu 12

21 Tu 03

21 Tu 06

21 Tu 09

21 Tu 24

21 Tu 15

21 Tu 18

21 Tu 21

22 We 12

22 We 03

22 We 06

22 We 09

22 We 24

22 We 15

22 We 18

22 We 21

23 Th 12

23 Th 03

23 Th 06

23 Th 09

23 Th 24

23 Th 15

23 Th 18

23 Th 21

24 Fr 12

24 Fr 03

24 Fr 06

24 Fr 09

Date/Day/Time (Local - 24 hr)

.
Contact | About | Disclaimer | Privacy
Advertise/Content | Links
Visit Mark Sponsler on Facebook Visit Stormsurf on Instagram Visit Stormsurf on YouTube
Copyright © 2026 STORMSURF - All Rights Reserved
This page cannot be duplicated, reused or framed in another window without express written permission.
But links are always welcome.
Buoys | Buoy Forecast | Bulletins | Models: Wave - Weather - Surf - Altimetry - Snow | Pacific Forecast | QuikCAST | El Nino | Tutorials | Great Circles | Calculator