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

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Thu

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Fri

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Mon

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Wed

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BULLETIN

Reliability 70%

No gale warning.

No weather risk at the spot

Thursday 2 jul

METEO CONSULT Run : 1/07 18Z Mesh : 1km Updated, 3h ago Update in 27min

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

Offshore

Offshore wind

Offshore sea (m)

25

20

15

10

5

50

40

30

20

10

15

10

5

0

30

25

20

15

10

5

10

5

0

0.5

0

3

0

25

20

15

10

80

70

60

50

                                    
                                                                         Fri 3
                                                            
                    03h
                
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                    18h
                
                    19h
                
                    20h
                
                    21h
                
                    22h
                
                    23h
                
                    00h
                
                    01h
                
                    02h
                
                        Run : 1/07 18Z
                Mesh : 1km
                Updated, 3h ago
                Update in 27min

Fri 3

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

270° W W
270° W W
270° W W
270° W W
260° W W
270° W W
275° W W
280° W W
280° W W
285° W WNW
285° W WNW
290° W WNW
300° NW WNW
305° NW NW
300° NW WNW
305° NW NW
305° NW NW
310° NW NW
305° NW NW
305° NW WNW
295° NW WNW
285° W WNW
285° W WNW
285° W WNW

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

16 30 8 19 5
18 33 9 21 5
18 34 9 21 5
19 35 10 22 5
18 34 9 21 5
18 34 9 21 5
21 38 11 24 5
21 39 11 24 6
22 40 11 25 6
21 39 11 24 6
19 36 10 22 5
19 35 10 22 5
18 34 9 21 5
18 34 9 21 5
19 35 10 22 5
19 35 10 22 5
19 36 10 22 5
20 37 10 23 5
19 36 10 22 5
18 34 9 21 5
16 30 8 19 5
15 28 8 17 4
14 26 7 16 4
14 26 7 16 4

0.4
0.3
0.3
0.3
0.3
0.3
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
0.4
0.3
0.3
0.3
0.3

0.1
0.1
0.1
0.2
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
0.2
0.1
0.1
0.1
0.1

0° 0 0
360° N N
0° 0 0
360° N N
355° N N
355° N N
355° N N
360° N N
355° N N
355° N N
355° N N
355° N N
355° N N
360° N N
360° N N
0° 0 0
0° N N
0° N N
0° N N
0° N N
0° N N
0° N N
360° N N
360° N N

0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3

5
5
5
5
5
5
5
5
5
5
5
4
6
5
5
5
5
5
5
5
4
4
4
4

70
60
45
30
30
30
25
25
25
25
25
35
40
35
25
25
25
25
25
40
70
70
70
70

2.8
2.8
3.7
5.5
7.4
9.1
10.0
9.9
8.9
7.4
5.7
4.1
3.1
2.9
3.7
5.3
7.3
9.1
10.2
10.3
9.5
8.0
6.2
4.5

18 65
18 65
18 65
18 65
18 65
18 64
18 64
18 64
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65

30
75
75
80
95
95
95
100
100
100
95
100
95
95
85
90
70
50
20
20
20
25
20
15

0
0
0
0
0
0
0
0
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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

0
0
0
0
0
0
0
0
65
65
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
15
10
10

1028
1027
1027
1027
1027
1027
1027
1027
1027
1027
1028
1028
1028
1028
1028
1027
1027
1027
1028
1028
1028
1029
1029
1029

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

14 58
15 58
15 59
16 60
16 61
17 62
18 64
18 65
18 65
19 66
19 66
19 66
20 67
20 68
20 68
21 69
20 69
20 67
19 65
18 64
16 62
16 60
15 60
15 59

11 52
11 52
11 53
12 54
13 55
14 56
15 58
15 59
15 59
16 61
17 62
18 64
18 64
23 73
21 70
22 72
22 71
18 64
16 61
14 58
14 56
13 55
13 55
12 54

14 26 4 7 16
15 27 4 8 17
14 26 4 7 16
16 29 5 8 18
13 25 4 7 16
15 28 4 8 17
16 29 5 8 18
18 33 5 9 21
17 32 5 9 20
17 31 5 9 19
15 28 4 8 17
14 26 4 7 16
13 25 4 7 16
15 27 4 8 17
15 27 4 8 17
15 27 4 8 17
15 28 4 8 17
16 29 5 8 18
15 28 4 8 17
15 27 4 8 17
13 25 4 7 16
13 24 4 7 15
12 23 4 6 14
12 23 4 6 14

0.8
0.8
0.8
0.8
0.9
0.9
0.9
1
1
1
0.9
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.7
0.7
0.7
0.7

Forecasts established in local time
Caption Glossary

Expert opinion

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

For Grève de Saint Marc :
No gale warning.

We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.

Very cloudy skies to overcast. Drizzle, which will start to fall late in the morning, will gradually die out. In the evening, clear periods developing.
No precipitation. W force 4 in the morning turning NW in the evening. Gusts reaching 22 knots in the morning. Smooth to slight sea. Low, short swell from N then from N in the evening. Excellent visibility.

Tides at Saint-Quay-Portrieux

71

Low tide 03h34 2.67m

High tide 09h20 10.04m

72

Low tide 15h47 2.88m

High tide 21h33 10.37m

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

Consult the tides for July

Go further

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

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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

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

Sat

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

Sun

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

Mon

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

Tue

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

Wed

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

Thu

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

Weather beach Grève de Saint Marc

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Saint-Quay-Portrieux

Go further