Weather Saint-Cast - Detailed bulletin - Free 15-day Marine forecasts

Saint-Cast-le-Guildo FRALongitude : -2°15’,6 W Latitude : 48°38’,4 N Altitude : 13m

Wed

20

-

- nd - km/h - bft - m/s - mph

Thu

21

-

- nd - km/h - bft - m/s - mph

Fri

22

-

- nd - km/h - bft - m/s - mph

Sat

23

-

- nd - km/h - bft - m/s - mph

Sun

24

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- nd - km/h - bft - m/s - mph

Mon

25

-

- nd - km/h - bft - m/s - mph

Tue

26

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- nd - km/h - bft - m/s - mph

Wed

27

-

- nd - km/h - bft - m/s - mph

Thu

28

-

- nd - km/h - bft - m/s - mph

Fri

29

-

- nd - km/h - bft - m/s - mph

Sat

30

-

- nd - km/h - bft - m/s - mph

Sun

31

-

- nd - km/h - bft - m/s - mph

Mon

01

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- nd - km/h - bft - m/s - mph

Tue

02

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- nd - km/h - bft - m/s - mph

Wed

03

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- nd - km/h - bft - m/s - mph

BULLETIN

(established in local time)

Reliability 85%

Wind alert - Warning strong breeze offshore.

Wednesday 20 august

Wind

Average winds

Gusts

10m above ground level:

Direction

Speed

Gusts

Waves

Total sea (m) (m)

Swell height (m) (m)

Total sea (m)

Total wave height (m)

Wind (m)

Swell direction

Swell height (m)

Swell period (s)

Wave length (m)

High tide (m)

Sea temp

Weather

Rain (mm) (mm)

Cloud cover(%)

Amount of precipitation(mm)

Type of precipitation

Precipitation risk(%)

Visibility(km)

Pressure(hPa)

UV

Temperature

Air temp

Perceived temp

Air temp

Perceived temp

Offshore

Offshore wind

Offshore sea (m)

30

25

20

15

10

50

40

30

20

10

15

10

5

35

30

25

20

15

10

5

0

1.5

1

0.5

0

3

0

20

15

10

70

65

60

55

Thu 21

01h
02h
03h
04h
05h
06h
07h
08h
09h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
20h
21h
22h
23h
00h

25° NE NNE
30° NE NNE
35° NE NE
35° NE NE
35° NE NE
40° NE NE
40° NE NE
45° NE NE
45° NE NE
45° NE NE
45° NE NE
45° NE NE
40° NE NE
35° NE NE
35° NE NE
30° NE NNE
30° NE NNE
30° NE NNE
30° NE NNE
30° NE NNE
25° NE NNE
30° NE NNE
20° N NNE
20° N NNE

11 21 6 13 4
10 19 5 12 3
10 19 5 12 3
10 19 5 12 3
11 21 6 13 4
12 23 6 14 4
15 28 8 17 4
15 27 8 17 4
12 22 6 14 4
13 25 7 16 4
16 30 8 19 5
17 31 9 19 5
18 33 9 21 5
18 33 9 21 5
17 31 9 19 5
17 32 9 20 5
17 31 9 19 5
17 31 9 19 5
16 29 8 18 5
15 27 8 17 4
13 25 7 16 4
13 24 7 15 4
11 21 6 13 4
10 19 5 12 3

17 31 9 19 5
16 30 8 19 5
16 30 8 19 5
17 31 9 19 5
17 32 9 20 5
18 34 9 21 5
22 40 11 25 6
21 39 11 24 6
21 38 11 24 5
21 38 11 24 5
24 44 12 27 6
26 48 13 30 6
26 49 14 30 6
26 49 14 30 6
26 48 13 30 6
25 47 13 29 6
25 47 13 29 6
25 46 13 29 6
24 45 13 28 6
23 42 12 26 6
22 40 11 25 6
20 37 10 23 5
19 35 10 22 5
17 31 9 19 5

0.5
0.6
0.6
0.6
0.7
0.7
0.8
0.8
0.7
0.7
0.8
1
1.1
1.1
1
1
1
1
0.9
0.8
0.7
0.7
0.6
0.6

1
1.1
1.3
1.3
1.4
1.4
1.5
1.5
1.5
1.5
1.7
1.9
2
2
1.9
1.9
1.9
1.9
1.7
1.6
1.5
1.4
1.3
1.2

0.5
0.5
0.6
0.6
0.6
0.6
0.6
0.6
0.5
0.5
0.7
0.9
1
1
1
1
1
0.9
0.8
0.7
0.7
0.6
0.5
0.5

175° S S
180° S S
340° N NNW
350° N N
355° N N
355° N N
360° N N
360° N N
180° S S
175° S S
345° N NNW
340° N NNW
335° NW NNW
335° NW NNW
335° NW NNW
335° NW NNW
340° N NNW
335° NW NNW
345° N NNW
350° N N
170° S S
350° N N
45° NE NE
170° S S

0.1
0.1
0.2
0.2
0.2
0.3
0.3
0.3
0.5
0.5
0.4
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.1

4
4
4
4
4
4
4
5
5
4
5
5
5
5
5
5
5
5
5
5
5
5
4
4

20
20
20
20
25
25
25
30
30
30
30
30
30
30
30
30
30
30
30
25
25
25
25
20

4.5
5.7
7.1
8.5
9.3
9.4
8.9
7.8
6.5
5.2
4.2
3.8
4.0
5.0
6.5
8.2
9.5
10.0
9.7
8.8
7.4
5.8
4.4
3.4

20 68
20 68
20 68
20 68
20 68
20 68
20 68
20 68
20 68
20 67
20 67
20 67
20 67
20 67
20 67
20 67
20 67
20 67
20 67
20 67
20 67
20 67
19 67
19 67

90
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
90
55
45

0.1
0
0
0
0
0
0
0
0.3
0.5
0.5
0.5
0.5
0.5
0.2
0
0
0
0
0
0
0
0
0

-
-
-
-
-
-

50
30
25
20
20
20
20
30
50
70
85
90
90
80
65
45
30
20
0
0
0
0
0
0

>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20

1011
1011
1011
1011
1011
1011
1010
1011
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1015
1015

0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0

19 66
18 65
18 65
18 64
18 65
18 65
18 65
18 65
18 65
19 65
18 65
19 65
19 65
19 66
19 66
19 66
19 66
19 66
19 65
18 65
18 64
18 64
17 63
17 62

15 58
15 58
14 58
14 58
14 58
14 57
13 56
13 56
14 58
14 57
13 56
13 56
14 57
15 59
16 60
16 61
16 61
15 60
14 58
14 57
13 56
13 56
13 56
13 56

15 27 4 8 17
18 33 5 9 21
19 35 5 10 22
20 37 5 10 23
22 40 6 11 25
23 42 6 12 26
23 43 6 12 27
23 43 6 12 27
23 42 6 12 26
23 42 6 12 26
22 41 6 11 25
21 39 6 11 24
20 37 5 10 23
19 36 5 10 22
18 34 5 9 21
18 33 5 9 21
17 32 5 9 20
16 30 5 8 19
15 28 4 8 17
15 28 4 8 17
13 25 4 7 16
12 23 4 6 14
12 22 4 6 14
11 21 4 6 13

0.5
0.6
0.7
0.9
1
1
1
1
1
1.1
1
1
0.9
0.9
0.9
0.8
0.8
0.8
0.7
0.7
0.6
0.5
0.5
0.4

Forecasts established in local time
Last updated 13min ago | Next update in 3h
Caption

Expert opinion

A northeasterly, moderate and mostly variable flow prevails over the whole area.

For Saint-Cast :
Warning strong breeze offshore.

We are 85% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.

Overcast skies with risk of thundery outbreaks. Some showers from late morning. In the evening, very cloudy skies to overcast.
Chance of light rain. NE wind force 5 continuing all day. Gusts reaching 26 knots in the middle of the day. Slight sea. Low, short swell from NNW. Excellent visibility.

Tides at Saint-Cast

54

High tide 05h37 9.45m

Low tide 12h16 3.73m

60

High tide 18h08 10.02m

www.shom.fr - © SHOM 2025

Consult the tides for August

Wed

20

-

- nd - km/h - bft - m/s - mph

Thu

21

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- nd - km/h - bft - m/s - mph

Fri

22

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- nd - km/h - bft - m/s - mph

Sat

23

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- nd - km/h - bft - m/s - mph

Sun

24

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- nd - km/h - bft - m/s - mph

Mon

25

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- nd - km/h - bft - m/s - mph

Tue

26

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- nd - km/h - bft - m/s - mph

Wed

27

-

- nd - km/h - bft - m/s - mph

Thu

28

-

- nd - km/h - bft - m/s - mph

Fri

29

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- nd - km/h - bft - m/s - mph

Sat

30

-

- nd - km/h - bft - m/s - mph

Sun

31

-

- nd - km/h - bft - m/s - mph

Mon

01

-

- nd - km/h - bft - m/s - mph

Tue

02

-

- nd - km/h - bft - m/s - mph

Wed

03

-

- nd - km/h - bft - m/s - mph

* +33 1 77 86 86 86: short number of forecasts for France accessible from France - €2.99 per call** 0899 70 12 34: number of forecasts for France and the World accessible from France - €2.99 per call

Weather board sports area Saint-Cast

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Saint-Cast