Weather Crique du Grand Mathieu - Detailed bulletin - Free 15-day Marine forecasts

Batz-sur-Mer (44740)Longitude : -2°28’,6836 W Latitude : 47°16’,314 N Altitude : 0m

Sun

19

-

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

Mon

20

-

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

Tue

21

-

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

Wed

22

-

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

Thu

23

-

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

Fri

24

-

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

Sat

25

-

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

Sun

26

-

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

Mon

27

-

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

Tue

28

-

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

Wed

29

-

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

Thu

30

-

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

Fri

31

-

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

Sat

01

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

Sun

02

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

BULLETIN

(established in local time)

Reliability 85%

Wind alert - Warning strong breeze offshore.

Sunday 19 october

Wind

Average winds

Gusts

10m above ground level:

Direction

Speed

Gusts

Under storms

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)

50

40

30

20

10

80

70

60

50

40

30

20

25

20

15

10

5

50

40

30

20

10

5

0

5

0

3

0

20

15

10

5

65

60

55

50

45

Mon 20

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

205° SW SSW
205° SW SSW
235° SW SW
240° SW WSW
250° W WSW
250° W WSW
240° SW WSW
230° SW SW
230° SW SW
230° SW SW
235° SW SW
240° SW WSW
240° SW WSW
235° SW WSW
235° SW SW
240° SW WSW
235° SW SW
235° SW SW
235° SW SW
235° SW SW
235° SW WSW
240° SW WSW
250° W WSW
250° W WSW

23 42 12 26 6
24 45 13 28 6
17 32 9 20 5
15 28 8 17 4
17 31 9 19 5
16 30 8 19 5
16 30 8 19 5
17 32 9 20 5
18 34 9 21 5
21 38 11 24 5
19 36 10 22 5
22 40 11 25 6
21 38 11 24 5
21 39 11 24 6
22 41 11 25 6
23 42 12 26 6
23 43 12 27 6
26 48 13 30 6
25 46 13 29 6
28 51 14 32 7
28 52 14 32 7
28 52 14 32 7
28 52 14 32 7
29 53 15 33 7

36 66 18 41 8
38 71 20 44 8
33 61 17 38 7
29 53 15 33 7
24 45 13 28 6
24 45 13 28 6
24 45 13 28 6
25 46 13 29 6
26 48 13 30 6
29 54 15 34 7
31 57 16 35 7
31 57 16 35 7
31 57 16 35 7
31 57 16 35 7
31 57 16 35 7
33 62 17 39 8
32 59 16 37 7
36 66 18 41 8
37 68 19 42 8
39 72 20 45 8
40 74 21 46 8
40 75 21 47 9
40 75 21 47 9
40 75 21 47 9

>40 >70 >21 >45 >8
>40 >80 >22 >50 >9
>50 >90 >26 >55 >10
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
>40 >75 >22 >45 >9
>35 >70 >19 >40 >8
>35 >70 >20 >45 >8
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
>35 >65 >18 >40 >8
>35 >65 >19 >40 >8
>35 >70 >20 >45 >8
- - - - -
- - - - -
- - - - -
- - - - -

2
2.2
2.1
1.9
1.8
1.8
1.8
1.8
1.9
1.9
2
2
2.1
2.1
2.1
2.1
2.2
2.3
2.4
2.5
2.7
2.9
2.9
3

3.7
3.9
3.8
3.5
3.3
3.2
3.2
3.3
3.4
3.4
3.5
3.7
3.7
3.7
3.8
3.8
4
4.1
4.2
4.5
4.9
5.2
5.3
5.4

2
2.1
1.5
1
0.9
1
1.1
1.4
1.5
1.6
1.7
1.8
1.8
1.8
1.9
2.1
2.2
2.3
2.3
2.5
2.7
2.8
2.9
2.9

290° W WNW
290° W WNW
215° SW SW
215° SW SW
220° SW SW
215° SW SW
270° W W
285° W WNW
270° W W
270° W W
270° W W
270° W W
270° W W
280° W W
270° W W
270° W W
270° W W
275° W W
275° W W
280° W W
280° W W
280° W W
195° S SSW
220° SW SW

0.4
0.2
1.3
1.4
1.4
1.2
1.1
0.9
0.9
0.9
0.8
0.9
0.9
0.9
0.8
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.4
0.5

7
8
7
6
8
7
8
9
9
8
8
8
8
9
8
8
8
8
9
9
10
9
10
10

60
70
80
100
110
120
120
110
100
100
90
90
90
90
90
90
90
90
90
100
100
100
110
120

5.1
5.1
4.6
3.7
2.7
1.9
1.3
1.1
1.5
2.4
3.4
4.4
5.0
5.1
4.6
3.9
2.9
2.0
1.4
1.1
1.4
2.2
3.3
4.3

16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61

100
100
100
90
50
80
80
85
85
90
85
80
85
70
85
80
60
95
85
80
90
95
80
60

0
0.6
0.3
0
0
0
0
0
0
0
0.7
0.6
0
0
0
0
0
0
0.1
0
0
0
0
0

-
-
-
-
-
-
-

40
75
50
30
0
0
0
0
0
45
60
65
35
0
0
25
30
40
50
40
30
30
35
25

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

1003
1002
1003
1002
1003
1003
1003
1003
1002
1002
1001
1001
1001
1000
999
999
999
999
999
999
999
999
998
998

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
2
2

17 62
17 63
17 62
17 62
17 62
16 61
16 61
16 61
16 61
16 62
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 61
16 62
17 62
17 62
17 62

10 50
10 50
11 52
12 53
11 52
11 51
11 52
11 51
10 51
10 50
10 50
9 49
10 49
10 49
9 49
9 48
9 48
9 47
9 48
9 48
9 48
10 50
11 51
11 51

19 35 5 10 22
19 36 5 10 22
15 27 4 8 17
15 27 4 8 17
17 31 5 9 19
15 28 4 8 17
18 33 5 9 21
19 35 5 10 22
19 36 5 10 22
20 37 5 10 23
21 39 6 11 24
20 37 5 10 23
21 39 6 11 24
22 40 6 11 25
23 43 6 12 27
23 42 6 12 26
24 45 6 13 28
26 48 6 13 30
28 52 7 14 32
28 52 7 14 32
30 56 7 16 35
29 53 7 15 33
30 55 7 15 34
31 57 7 16 35

1.1
1.1
1.1
1.1
1.1
1.1
1.1
1
1
1.1
1.1
1.1
1.1
1.1
1.2
1.4
1.5
1.6
1.7
1.8
1.8
1.8
1.9
1.9

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

Expert opinion

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

For Crique du Grand Mathieu :
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. Light showers. In the evening, very cloudy with risk of storms.
Light showers progressively becoming less frequent. SSW force 6 in the middle of the day turning WSW force 5 in the evening. Gusts reaching 38 knots in the middle of the day. Moderate sea. Low, short swell from WNW. Excellent visibility.

Tides at Le Croisic

76

High tide 04h09 4.92m

Low tide 10h25 1.26m

79

High tide 16h24 5.14m

Low tide 22h50 1.11m

www.shom.fr - © SHOM 2025

Consult the tides for October

Sun

19

-

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

Mon

20

-

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

Tue

21

-

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

Wed

22

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

Thu

23

-

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

Fri

24

-

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

Sat

25

-

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

Sun

26

-

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

Mon

27

-

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

Tue

28

-

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

Wed

29

-

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

Thu

30

-

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

Fri

31

-

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

Sat

01

-

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

Sun

02

-

- 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 beach Crique du Grand Mathieu

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Le Croisic