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

Tréveneuc (22411)Lon : -2°51’,1836 W Lat : 48°40’,014 N Alt : 0m

Sun

29

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

Mon

30

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

Tue

31

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Wed

01

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

Thu

02

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

Fri

03

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

Sat

04

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

Sun

05

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

Mon

06

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

Tue

07

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

Wed

08

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

Thu

09

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

Fri

10

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Sat

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Sun

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BULLETIN

(* established in local time)

Reliability 90%

Wind alert - Warning strong breeze offshore.

Sunday 29 mar

METEO CONSULT Run : 28/03 00Z Mesh : 1km Updated, 2min ago Update in 5h

Wind

Average winds

Gusts

10m above ground level:

Direction

Speed

Gusts

Waves

Total sea (m) (m)

Swell (m) (m)

Total sea (m)

Wind (m)

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

Offshore

Offshore wind

Offshore sea (m)

30

20

10

0

60

50

40

30

20

10

15

10

5

0

40

30

20

10

0

10

5

0

1

0.5

0

3

0

15

10

5

0

55

50

45

40

35

30

                                    
                                                                         Mon 30
                                                            
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                    18h
                
                    19h
                
                    20h
                
                    21h
                
                    22h
                
                    23h
                
                    00h
                
                    01h
                
                    02h
                
                    03h
                
                        Run : 28/03 00Z
                Mesh : 1km
                Updated, 2min ago
                Update in 5h

Mon 30

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

315° NW NW
305° NW WNW
295° NW WNW
280° W WNW
260° W W
265° W W
265° W W
270° W W
280° W W
285° W WNW
280° W W
285° W WNW
280° W W
280° W WNW
275° W W
275° W W
270° W W
260° W W
260° W W
260° W W
260° W W
260° W W
265° W W
275° W W

9 17 5 11 3
9 16 4 10 3
6 11 3 7 2
6 12 3 7 3
6 12 3 7 3
6 11 3 7 2
5 10 3 6 2
6 12 3 7 3
9 16 4 10 3
8 14 4 9 3
10 19 5 12 3
11 21 6 13 4
13 24 7 15 4
13 25 7 16 4
13 24 7 15 4
13 24 7 15 4
12 22 6 14 4
12 23 6 14 4
14 26 7 16 4
15 27 8 17 4
15 28 8 17 4
14 26 7 16 4
12 23 6 14 4
12 22 6 14 4

17 31 9 19 5
15 28 8 17 4
13 25 7 16 4
11 21 6 13 4
11 21 6 13 4
11 20 6 12 4
10 19 5 12 3
12 23 6 14 4
15 28 8 17 4
15 28 8 17 4
17 32 9 20 5
19 35 10 22 5
22 40 11 25 6
23 43 12 27 6
24 44 12 27 6
24 44 12 27 6
23 42 12 26 6
23 43 12 27 6
25 46 13 29 6
26 48 13 30 6
27 50 14 31 7
26 49 14 30 6
25 46 13 29 6
22 41 11 25 6

0.9
0.9
0.8
0.7
0.6
0.6
0.5
0.5
0.5
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
0.5
0.5

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

10° N N
10° N N
10° N N
10° N N
10° N N
5° N N
5° N N
5° N N
5° N N
5° N N
10° N N
5° N N
5° N N
5° N N
0° 0 0
355° N N
355° N N
355° N N
355° N N
355° N N
355° N N
355° N N
355° N N
355° N N

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

5
5
5
5
6
6
6
6
6
6
6
6
6
6
5
5
7
8
7
7
7
7
7
7

50
50
60
60
120
130
160
160
150
150
140
130
120
120
110
140
140
130
110
100
90
90
150
130

8.8
9.1
9.0
8.2
7.0
5.6
4.4
3.5
3.2
3.7
4.9
6.5
8.0
9.1
9.5
9.1
8.0
6.5
5.0
3.8
3.2
3.4
4.4
6.1

10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50
10 50

0
0
10
25
75
55
40
55
95
85
90
95
95
80
95
80
100
85
100
100
100
100
100
100

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

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

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
50
70
70
50
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

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

1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1034
1034
1033
1032
1032
1032
1032
1031
1031
1030
1030
1030
1029

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

5 41
5 41
5 41
5 40
4 39
5 42
8 46
10 49
10 50
11 51
11 52
11 53
12 53
11 52
11 52
11 51
10 50
10 50
10 49
10 50
10 50
10 50
10 50
11 51

2 35
2 35
3 37
2 36
2 35
4 39
8 46
10 50
9 49
11 52
11 52
11 52
11 51
9 48
8 46
7 45
7 44
6 42
5 41
5 41
5 41
5 41
6 43
7 44

17 31 5 9 19
15 28 4 8 17
14 26 4 7 16
13 24 4 7 15
11 20 4 6 12
10 18 3 5 11
7 13 3 4 8
8 14 3 4 9
10 18 3 5 11
11 20 4 6 12
10 18 3 5 11
15 27 4 8 17
16 29 5 8 18
17 32 5 9 20
17 32 5 9 20
17 32 5 9 20
18 34 5 9 21
18 34 5 9 21
19 35 5 10 22
20 37 5 10 23
20 37 5 10 23
20 37 5 10 23
19 35 5 10 22
19 35 5 10 22

1.5
1.4
1.3
1.2
1.1
1
0.9
0.9
0.8
0.8
0.8
0.8
0.9
1
1
1.1
1.1
1.1
1.2
1.3
1.3
1.3
1.4
1.4

Forecasts established in local time
Last updated 37min ago | Next update in 3h
Caption

Expert opinion

A westerly, very strong and very variable flow prevails over the whole area.

For Grève de Saint Marc :
Warning strong breeze offshore.

The reliability of the situation is assessed at 90%.

Fairly clear skies progressively clouding over in the morning, very cloudy skies to overcast in the afternoon. No precipitation. In the evening, very cloudy skies becoming totally overcast.
Light, intermittent drizzle. W force 3 in the morning becoming force 4 in the middle of the day. Gusts reaching 26 knots in the evening. Slight sea becoming smooth to slight in the middle of the day. Low, short swell from N then from N in the evening. Excellent visibility.

Tides at Saint-Quay-Portrieux

56

High tide 05h15 9.16m

Low tide 11h57 3.24m

63

High tide 17h56 9.5m

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

Consult the tides for March

Go further

Sun

29

-

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

Mon

30

-

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

Tue

31

-

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

Wed

01

-

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

Thu

02

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

Fri

03

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

Sat

04

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

Sun

05

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

Mon

06

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

Tue

07

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

Wed

08

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

Thu

09

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

Fri

10

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

Sat

11

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

Sun

12

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- 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

Go further