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

Saint-Cast-le-Guildo FRALon : -2°14’,724 W Lat : 48°38’,442 N Alt : 2m

Weather Risk Briefing

Fri

11

-

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

Sat

12

-

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

Sun

13

-

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

Mon

14

-

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

Tue

15

-

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

Wed

16

-

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

Thu

17

-

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

Fri

18

-

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

Sat

19

-

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

Sun

20

-

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

Mon

21

-

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

Tue

22

-

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

Wed

23

-

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

Thu

24

-

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

Fri

25

-

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

BULLETIN

Reliability 55%

No gale warning.

No weather risk at the spot

Friday 18 sep

METEO CONSULT Run : 11/09 00Z Mesh : 19km Updated, 30min ago Update in 6h

Wind

Average winds

Gusts

10m above ground level:

Direction

Speed

Gusts

Waves

Total sea (m) (m)

Swell (m) (m)

legend.title.wave_height

Total sea (m)

legend.title.wind_sea

Wind (m)

legend.title.swell

Swell direction

Swell height (m)

Swell period (s)

Wave length (m)

High tide (m)

Sea temp

Weather

Rain (mm) (mm)

Clouds:

Cloud cover (%)

Precipitation:

Amount of precipitation (mm)

Type of precipitation

Risks:

Precipitation risk (%)

Storm risk. (%)

Brightness:

Visibility (km)

Pressure (hPa)

UV

Temperature

Air temp

Perceived temp

Air temp

Perceived temp

15

10

5

0

25

20

15

10

5

10

5

0

15

10

5

0

1.5

1

0.5

3

0

25

20

15

10

80

70

60

50

                                                                         Fri 18
                                                            
                    00h
                
                    01h
                
                    02h
                
                    03h
                
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                    18h
                
                    19h
                
                    20h
                
                    21h
                
                    22h
                
                    23h
                
                        Run : 11/09 00Z
                Mesh : 19km
                Updated, 30min ago
                Update in 6h

Fri 18

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

290° W WNW
290° W WNW
290° W WNW
285° W WNW
285° W WNW
280° W W
275° W W
275° W W
275° W W
285° W WNW
290° W WNW
300° NW WNW
305° NW NW
310° NW NW
315° NW NW
325° NW NW
330° NW NNW
335° NW NNW
335° NW NNW
335° NW NNW
335° NW NNW
325° NW NNW
315° NW NW
305° NW NW

6 12 3 7 3
6 12 3 7 3
6 12 3 7 3
6 12 3 7 3
6 11 3 7 2
6 11 3 7 2
5 10 3 6 2
5 9 3 6 2
5 9 3 6 2
4 8 2 5 2
4 8 2 5 2
4 8 2 5 2
5 9 3 6 2
5 10 3 6 2
6 11 3 7 2
6 12 3 7 3
8 14 4 9 3
8 15 4 9 3
8 14 4 9 3
7 13 4 8 3
6 12 3 7 3
5 10 3 6 2
5 9 3 6 2
4 8 2 5 2

12 23 6 14 4
12 22 6 14 4
11 21 6 13 4
11 20 6 12 4
10 19 5 12 3
10 18 5 11 3
9 17 5 11 3
9 16 4 10 3
8 15 4 9 3
9 16 4 10 3
9 16 4 10 3
9 16 4 10 3
8 15 4 9 3
8 15 4 9 3
8 15 4 9 3
9 16 4 10 3
9 17 5 11 3
10 19 5 12 3
11 20 6 12 4
11 20 6 12 4
11 21 6 13 4
10 19 5 12 3
10 18 5 11 3
9 16 4 10 3

1.2
1.1
1.1
1
1
0.9
0.9
0.9
0.8
0.8
0.8
0.7
0.7
0.7
0.7
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.5

0.9
0.9
0.8
0.7
0.7
0.6
0.5
0.4
0.4
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
0.1

300° NW WNW
295° NW WNW
295° NW WNW
295° NW WNW
295° NW WNW
295° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
305° NW WNW
305° NW WNW
305° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW
300° NW WNW

0.6
0.6
0.6
0.6
0.6
0.6
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.6
0.6
0.6
0.6
0.5
0.5
0.5
0.5
0.5
0.5
0.5

6
6
6
6
6
6
6
6
5
5
5
6
6
6
6
6
6
6
6
7
7
7
7
7

25
25
25
25
25
25
25
25
20
25
25
25
25
25
25
25
25
25
25
20
20
20
20
20

9.6
9.0
7.9
6.5
5.3
4.4
4.0
4.4
5.4
6.9
8.3
9.2
9.4
8.9
8.1
6.9
5.8
4.9
4.4
4.4
5.1
6.3
7.5
8.4

21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 69
21 70
21 70
21 70
21 70
21 70
21 70
21 70
21 70
21 70

60
60
60
60
60
60
60
60
55
55
55
55
50
50
45
40
35
30
30
25
25
30
35
35

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-

30
40
45
30
25
25
25
25
25
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

5
5
4
4
4
3
4
4
4
10
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
10
5

1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1020
1020
1019
1019
1019
1019
1020
1020
1021

0
0
0
0
0
0
0
0
0
0
1
2
3
4
5
5
4
2
1
0
0
0
0
0

14 57
14 57
14 56
13 56
13 55
13 55
13 55
13 55
12 54
14 57
15 59
16 62
17 63
18 65
19 67
19 67
19 66
19 66
18 64
17 62
16 60
15 58
14 57
13 56

12 53
11 53
11 52
11 52
11 51
11 51
11 51
11 51
11 51
13 55
14 58
16 61
18 65
20 68
22 71
22 71
21 71
21 70
19 67
17 63
15 59
14 57
13 55
11 53

Forecasts established in local time
Caption Glossary

Expert opinion

Bulletin météo de la zone côtière de Dunkerque à Boulogne

Weather Risk Briefing

For Mouillage de Saint-Cast :
No gale warning.

For the night from Thursday to Friday WNW force 3 in the early part of the night becoming W force 2. Gusts reaching 12 knots in the early part of the night.

Slight sea. Low, short swell from WNW. Poor visibility becoming reduced by mist in the middle of the night. Daytime of Friday 18 september : Warning:reduced visibility early in the day.

Sunny spells with possibility of mist forming in the morning, cloud and sun in the afternoon. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, relatively clear skies becoming changeable.
W force 2 turning NW force 3 in the middle of the day then NNW. Gusts reaching 11 knots in the evening. Slight sea becoming smooth to slight in the evening. Low, short swell from WNW. Visibility reduced by mist becoming excellent in the middle of the day then poor.

semaphore stations

Station Dinard located 14 km from Mouillage de Saint-Cast

	WIND			WEATHER
Local time	Dir. (°)	Speed (nd)	Gust (nd)	Temp. (°C)	Pressure (hPa)	Visibility (M)
09h	200	6	10	16	1021	14
08h	220	6	9	15.2	1020	11
07h	220	8	14	15.3	1020	2

Nearby signal stations

Météo France - RADOME

Signal station weather

Tides at Saint-Cast

41

Low tide 06h05 4m

High tide 11h41 9.41m

35

Low tide 18h28 4.3m

High tide 23h59 8.78m

www.shom.fr - © SHOM 2026 - Local times

Consult the tides for September

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Fri

11

-

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

Sat

12

-

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

Sun

13

-

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

Mon

14

-

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

Tue

15

-

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

Wed

16

-

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

Thu

17

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

Fri

18

-

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

Sat

19

-

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

Sun

20

-

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

Mon

21

-

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

Tue

22

-

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

Wed

23

-

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

Thu

24

-

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

Fri

25

-

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

Weather anchorage Mouillage de Saint-Cast

BULLETIN

Wind

Waves

Weather

Temperature

Expert opinion

semaphore stations

Tides at Saint-Cast

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