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

Sat

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Sat

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Sun

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Mon

30

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Tue

31

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Wed

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BULLETIN

(* established in local time)

Reliability 90%

No gale warning.

Saturday 21 mar

METEO CONSULT Run : 21/03 00Z Mesh : 1km Updated, 3h ago Update in 3h

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)

20

15

10

5

30

25

20

15

10

5

0

20

15

10

5

0

1

0.5

0

3

0

15

10

5

0

60

50

40

30

                                    
                                                                         Sun 22
                                                            
                    21h
                
                    22h
                
                    23h
                
                    00h
                
                    01h
                
                    02h
                
                    03h
                
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                    18h
                
                    19h
                
                    20h
                
                        Run : 21/03 00Z
                Mesh : 1km
                Updated, 3h ago
                Update in 3h

Sun 22

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

35° NE NE
40° NE NE
45° NE NE
40° NE NE
45° NE NE
50° NE NE
45° NE NE
40° NE NE
35° NE NNE
25° NE NNE
15° N NNE
15° N NNE
20° N NNE
20° N NNE
25° NE NNE
15° N NNE
15° N NNE
15° N NNE
10° N N
5° N N
5° N N
0° 0 0
360° N N
355° N N

8 15 4 9 3
8 15 4 9 3
9 16 4 10 3
8 15 4 9 3
8 14 4 9 3
7 13 4 8 3
8 14 4 9 3
8 15 4 9 3
8 15 4 9 3
8 15 4 9 3
9 16 4 10 3
8 15 4 9 3
8 15 4 9 3
9 16 4 10 3
8 15 4 9 3
8 14 4 9 3
7 13 4 8 3
7 13 4 8 3
8 14 4 9 3
8 15 4 9 3
8 14 4 9 3
8 14 4 9 3
6 12 3 7 3
6 11 3 7 2

13 24 7 15 4
13 25 7 16 4
14 26 7 16 4
13 25 7 16 4
13 24 7 15 4
12 22 6 14 4
12 23 6 14 4
13 24 7 15 4
13 25 7 16 4
14 26 7 16 4
14 26 7 16 4
14 26 7 16 4
14 26 7 16 4
15 27 8 17 4
14 26 7 16 4
13 25 7 16 4
13 24 7 15 4
13 24 7 15 4
13 25 7 16 4
14 26 7 16 4
13 25 7 16 4
13 24 7 15 4
12 23 6 14 4
11 20 6 12 4

0.5
0.6
0.5
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
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3

0.3
0.4
0.2
0.2
0.2
0.2
0.2
0.3
0.3
0.3
0.2
0.2
0.3
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.1
0.1

25° NE NNE
25° NE NNE
25° NE NNE
30° NE NNE
25° NE NNE
15° N NNE
10° N N
15° N NNE
10° N N
30° NE NNE
30° NE NNE
35° NE NE
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
0° N N
0° N N
0° N N

0.4
0.4
0.5
0.5
0.4
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.3
0.3
0.3
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3

5
5
5
5
5
5
8
7
7
5
6
5
9
8
9
8
8
8
10
10
10
9
9
9

35
30
35
35
120
160
150
150
150
150
150
150
140
140
140
180
150
180
170
170
170
160
160
160

11.7
11.0
9.2
6.9
4.4
2.4
1.3
1.4
2.9
5.5
8.3
10.6
11.7
11.3
9.9
7.7
5.2
3.0
1.6
1.3
2.4
4.7
7.4
9.9

10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 50
10 50
10 50
10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 51
10 51

0
0
30
20
15
10
15
25
30
40
30
25
25
15
20
15
15
10
15
20
25
20
35
60

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

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

1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1016
1016
1016
1016
1016
1017
1017

0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
3
3
3
3
2
1
0
0
0

8 47
8 47
8 46
8 46
8 46
7 44
7 44
7 45
8 46
8 46
7 45
8 46
9 49
10 50
11 51
11 52
11 52
11 52
11 52
11 52
11 51
10 50
9 49
9 47

5 42
5 41
5 41
5 41
5 41
4 39
4 39
5 40
5 40
5 40
4 40
5 41
8 46
10 50
12 53
13 56
14 57
14 58
14 57
13 55
11 52
9 48
7 45
6 43

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

0.8
0.8
0.8
0.7
0.7
0.7
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.5
0.5
0.5
0.5
0.5
0.5
0.5

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

Expert opinion

A northeasterly and very variable flow prevails over the South of the basin. Over the North, it is southwesterly, moderate and variable.

For Grève de Saint Marc :
No gale warning.

We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.

In the evening, skies with few clouds.
NNE wind force 3. Gusts reaching 14 knots in the evening. Smooth to slight sea. Low, short swell from NNE. Good visibility.

Tides at Saint-Quay-Portrieux

104

Low tide 02h51 1.04m

High tide 08h35 11.91m

103

Low tide 15h12 0.98m

High tide 20h53 11.73m

www.shom.fr - © SHOM 2026

Consult the tides for March

Go further

Sat

21

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

Sun

22

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

Mon

23

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

Tue

24

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

Wed

25

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

Thu

26

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

Fri

27

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

Sat

28

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

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

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

* +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

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