Weather Grève de Saint Marc - Detailed bulletin - Free 15-day Marine forecasts

Tréveneuc (22411)Longitude : -2°51’,1836 W Latitude : 48°40’,014 N Altitude : 0m

Tue

29

-

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

Wed

30

-

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

Thu

01

-

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

Fri

02

-

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

Sat

03

-

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

Sun

04

-

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

Mon

05

-

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

Tue

06

-

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

Wed

07

-

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

Thu

08

-

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

Fri

09

-

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

Sat

10

-

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

Sun

11

-

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

Mon

12

-

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

Tue

13

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

BULLETIN

(established in local time)

Reliability 95%

No gale warning.

Tuesday 29 april

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)

20

15

10

5

0

30

20

10

0

10

5

0

20

15

10

5

0

10

5

0

1

0.5

0

3

0

30

20

10

0

90

80

70

60

50

40

Wed 30

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

85° E E
90° E E
90° E E
100° E E
95° E E
85° E E
80° E E
85° E E
85° E E
90° E E
95° E E
100° E E
100° E E
85° E E
70° E ENE
60° NE ENE
50° NE NE
45° NE NE
50° NE NE
45° NE NE
45° NE NE
60° NE ENE
70° E ENE
70° E ENE

9 17 5 11 3
8 15 4 9 3
8 14 4 9 3
5 10 3 6 2
5 9 3 6 2
4 7 2 4 2
3 6 2 4 2
3 6 2 4 2
4 7 2 4 2
4 8 2 5 2
4 7 2 4 2
4 8 2 5 2
5 10 3 6 2
5 10 3 6 2
5 10 3 6 2
6 11 3 7 2
6 11 3 7 2
5 10 3 6 2
8 15 4 9 3
8 15 4 9 3
9 17 5 11 3
10 19 5 12 3
9 16 4 10 3
9 16 4 10 3

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

0.7
0.6
0.6
0.5
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.3
0.3
0.3
0.3
0.5
0.5

1.4
1.3
1.2
1
0.9
0.9
0.8
0.7
0.7
0.7
0.7
0.7
0.7
0.6
0.6
0.6
0.5
0.5
0.6
0.6
0.6
0.7
1
1

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

35° NE NE
40° NE NE
40° NE NE
40° NE NE
40° NE NE
40° NE NE
40° NE NE
35° NE NE
35° NE NE
35° NE NNE
30° NE NNE
30° NE NNE
30° NE NNE
30° NE NNE
25° NE NNE
25° NE NNE
25° NE NNE
25° NE NNE
25° NE NNE
65° NE ENE
20° N NNE
25° NE NNE
30° NE NNE
30° NE NNE

0.6
0.6
0.6
0.5
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.2
0.3
0.4
0.4

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

25
30
30
30
30
30
30
30
35
35
35
35
35
40
40
90
110
110
110
30
30
30
30
30

11.6
10.3
8.1
5.6
3.2
1.6
1.0
1.8
3.9
6.8
9.5
11.2
11.6
10.7
8.9
6.5
4.2
2.3
1.4
1.7
3.4
6.0
8.7
10.8

14 57
14 56
14 56
14 56
14 57
14 57
14 57
14 57
14 56
13 56
13 56
13 56
13 56
14 56
14 57
14 57
14 58
15 58
15 59
15 59
15 59
15 58
15 58
14 58

0
0
25
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
0
0
0
0
0
0
0
0
0

15
15
>20
15
15
15
15
10
10
10
10
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20

1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1020
1020
1020
1020
1020
1019
1019
1018
1017
1017
1017
1017
1017

0
0
0
0
0
0
0
0
0
0
0
1
2
3
5
6
6
6
5
3
2
1
0
0

16 60
15 59
14 58
14 57
14 56
13 55
13 55
12 54
11 51
9 47
11 51
15 58
16 61
18 64
18 65
19 66
19 66
20 68
20 68
20 68
19 67
19 66
18 64
17 62

12 54
12 54
12 53
12 53
12 53
12 53
11 52
11 52
9 48
7 44
10 50
15 59
18 64
20 69
22 72
23 74
24 75
25 76
27 80
26 78
20 69
18 65
16 61
14 57

17 32 5 9 20
17 32 5 9 20
16 29 5 8 18
14 26 4 7 16
12 23 4 6 14
11 21 4 6 13
11 20 4 6 12
10 18 3 5 11
9 17 3 5 11
9 16 3 4 10
8 15 3 4 9
9 16 3 4 10
9 16 3 4 10
8 15 3 4 9
9 16 3 4 10
10 19 3 5 12
11 21 4 6 13
12 22 4 6 14
12 23 4 6 14
13 24 4 7 15
15 27 4 8 17
16 29 5 8 18
15 28 4 8 17
17 31 5 9 19

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

Forecasts established in local time
Last updated 28min ago | Next update in 3h
Caption

Expert opinion

High 1027 hPa centered on the center of the North Sea remaining almost stationary.

For Grève de Saint Marc :
No gale warning.

The reliability of the situation is assessed at 95%.

In the evening, clear skies.
ENE wind force 4. Gusts reaching 18 knots in the evening. Slight sea. Low, short swell from NE. Good visibility.

Tides at Saint-Quay-Portrieux

107

Low tide 03h16 0.87m

High tide 09h01 11.97m

105

Low tide 15h37 0.94m

High tide 21h20 11.89m

www.shom.fr - © SHOM 2025

Consult the tides for April

Tue

29

-

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

Wed

30

-

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

Thu

01

-

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

Fri

02

-

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

Sat

03

-

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

Sun

04

-

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

Mon

05

-

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

Tue

06

-

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

Wed

07

-

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

Thu

08

-

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

Fri

09

-

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

Sat

10

-

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

Sun

11

-

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

Mon

12

-

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

Tue

13

-

- 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 Grève de Saint Marc

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Saint-Quay-Portrieux