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

10

-

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

Thu

11

-

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

Fri

12

-

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

Sat

13

-

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

Sun

14

-

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

Mon

15

-

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

Tue

16

-

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

Wed

17

-

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

Thu

18

-

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

Fri

19

-

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

Sat

20

-

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

Sun

21

-

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

Mon

22

-

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

Tue

23

-

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

Wed

24

-

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

BULLETIN

(established in local time)

Reliability 80%

Wind alert - Warning moderate gale offshore.

Wednesday 10 september

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

5

50

40

30

20

10

15

10

5

0

40

30

20

10

0

10

5

0

1.5

1

0.5

0

3

0

20

15

10

5

70

65

60

55

50

45

Thu 11

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

180° S S
190° S S
195° S SSW
205° SW SSW
205° SW SSW
200° S SSW
195° S SSW
200° S SSW
200° S SSW
205° SW SSW
205° SW SSW
210° SW SSW
200° S SSW
195° S SSW
205° SW SSW
220° SW SW
265° W W
275° W W
275° W W
275° W W
270° W W
265° W W
250° W WSW
250° W WSW

12 22 6 14 4
10 19 5 12 3
9 17 5 11 3
8 15 4 9 3
8 15 4 9 3
9 16 4 10 3
9 16 4 10 3
9 17 5 11 3
10 18 5 11 3
10 19 5 12 3
12 22 6 14 4
12 23 6 14 4
13 25 7 16 4
13 25 7 16 4
15 27 8 17 4
13 24 7 15 4
14 26 7 16 4
15 27 8 17 4
16 30 8 19 5
16 30 8 19 5
16 29 8 18 5
15 28 8 17 4
12 23 6 14 4
13 24 7 15 4

19 36 10 22 5
18 34 9 21 5
18 33 9 21 5
16 29 8 18 5
14 26 7 16 4
14 26 7 16 4
14 26 7 16 4
15 27 8 17 4
16 30 8 19 5
17 32 9 20 5
18 34 9 21 5
20 37 10 23 5
22 41 11 25 6
22 41 11 25 6
24 45 13 28 6
23 43 12 27 6
25 47 13 29 6
26 48 13 30 6
26 48 13 30 6
26 49 14 30 6
25 46 13 29 6
24 45 13 28 6
23 43 12 27 6
21 39 11 24 6

0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.5
0.5
0.5
0.7
0.9
1
1.1
1
0.9
0.9

0.8
0.8
0.8
0.8
0.8
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
1
1
1.1
1.3
1.7
2
2
1.9
1.8
1.7

0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.3
0.3
0.4
0.6
0.7
0.6
0.4
0.2
0.2

320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
320° NW NW
325° NW NW
325° NW NW
320° NW NW
325° NW NW
330° NW NNW
330° NW NNW
330° NW NNW
325° NW NNW
325° NW NW
325° NW NW

0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.5
0.6
0.6
0.7
0.9
0.9
0.8

10
10
10
10
10
10
10
10
10
10
10
10
10
9
9
9
9
7
6
6
6
6
7
7

110
110
120
130
140
150
140
140
130
130
130
130
130
120
120
120
120
50
50
60
60
70
70
80

3.7
1.7
0.8
1.2
3.4
6.6
9.8
12.0
12.4
11.5
9.6
7.1
4.5
2.4
1.2
1.1
2.8
5.8
9.2
11.7
12.7
12.1
10.4
8.0

19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66

100
100
80
70
70
75
100
100
95
95
75
95
100
100
100
95
90
85
90
75
80
80
70
80

0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0
0
0
0
0
0
0
0

-
-
-
-
-
-
-
-
-
-

100
45
30
0
0
0
0
25
30
30
25
0
30
45
60
55
45
35
20
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

1008
1008
1007
1007
1007
1006
1006
1006
1006
1006
1005
1004
1004
1003
1003
1003
1003
1004
1005
1006
1007
1007
1008
1008

0
0
0
0
0
0
0
0
1
1
3
1
1
1
1
1
0
0
0
0
0
0
0
0

15 59
15 59
14 58
14 57
14 57
14 57
14 57
15 58
15 60
17 62
17 63
18 64
18 64
18 64
18 64
18 65
18 64
18 64
17 63
16 61
16 60
15 60
15 59
14 58

11 52
11 52
11 52
11 52
11 52
11 52
11 52
12 53
12 54
14 57
17 62
17 63
14 56
14 56
13 55
16 61
15 59
13 56
12 54
11 51
11 51
10 51
10 51
10 50

19 36 5 10 22
19 35 5 10 22
19 35 5 10 22
18 34 5 9 21
18 34 5 9 21
18 33 5 9 21
18 33 5 9 21
18 33 5 9 21
17 32 5 9 20
18 34 5 9 21
17 32 5 9 20
17 32 5 9 20
18 34 5 9 21
19 35 5 10 22
19 36 5 10 22
20 37 5 10 23
24 44 6 12 27
25 47 6 13 29
26 49 6 14 30
26 49 6 14 30
26 49 6 14 30
26 48 6 13 30
25 47 6 13 29
25 46 6 13 29

1.6
1.6
1.6
1.5
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.5
1.6
1.8
1.9
2.2
2.5
2.6
2.6
2.5
2.4
2.3

Forecasts established in local time
Last updated 1h ago | Next update in 2h
Caption

Expert opinion

A southerly, moderate and mostly variable flow prevails over the North and the East of the basin. Over the South-West, it is westerly, strong and mostly variable.

For Saint-Cast :
Warning moderate gale offshore.

We are 80% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will begin.

Very cloudy skies with short clear spells. Possibility of showers late in the morning, showers late in the day. In the evening, very cloudy.
Possibility of showers SSW force 3 becoming force 4 in the middle of the day then W force 5. Gusts reaching 26 knots in the evening. Smooth to slight sea becoming slight in the evening. Low, fairly long swell from NW. Excellent visibility.

Tides at Saint-Cast

106

Low tide 04h18 0.73m

High tide 09h43 12.47m

104

Low tide 16h35 0.97m

High tide 22h00 12.67m

www.shom.fr - © SHOM 2025

Consult the tides for September

Wed

10

-

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

Thu

11

-

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

Fri

12

-

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

Sat

13

-

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

Sun

14

-

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

Mon

15

-

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

Tue

16

-

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

Wed

17

-

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

Thu

18

-

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

Fri

19

-

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

Sat

20

-

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

Sun

21

-

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

Mon

22

-

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

Tue

23

-

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

Wed

24

-

- 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