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

Fri

10

-

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

Sat

11

-

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

Sun

12

-

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

Mon

13

-

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

Tue

14

-

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

Wed

15

-

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

Thu

16

-

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

Fri

17

-

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

Sat

18

-

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

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

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

BULLETIN

(established in local time)

Reliability 90%

No gale warning.

Friday 10 october

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

40

30

20

10

0

10

5

0

25

20

15

10

5

0

10

5

0

1

0.5

0

3

0

20

15

10

5

65

60

55

50

45

Sat 11

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

70° E ENE
70° E ENE
70° E ENE
75° E ENE
80° E E
75° E ENE
65° NE ENE
65° NE ENE
55° NE ENE
60° NE ENE
55° NE ENE
55° NE ENE
60° NE ENE
60° NE ENE
60° NE ENE
60° NE ENE
65° NE ENE
70° E ENE
75° E ENE
75° E ENE
75° E ENE
75° E ENE
75° E ENE
80° E E

3 5 1 3 1
4 7 2 4 2
3 6 2 4 2
5 9 3 6 2
4 7 2 4 2
5 10 3 6 2
7 13 4 8 3
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
9 17 5 11 3
10 19 5 12 3
11 20 6 12 4
11 21 6 13 4
12 22 6 14 4
12 22 6 14 4
11 21 6 13 4
10 19 5 12 3
10 19 5 12 3
11 20 6 12 4
11 20 6 12 4
11 21 6 13 4

6 11 3 7 2
7 13 4 8 3
6 11 3 7 -
9 16 4 10 3
9 16 4 10 3
9 16 4 10 3
11 20 6 12 4
11 21 6 13 4
12 23 6 14 4
13 25 7 16 4
13 25 7 16 4
14 26 7 16 4
14 26 7 16 4
15 28 8 17 4
15 28 8 17 -
16 30 8 19 5
17 31 9 19 5
17 32 9 20 5
17 31 9 19 5
16 30 8 19 5
15 28 8 17 4
16 29 8 18 5
15 28 8 17 -
16 30 8 19 5

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
0.4
0.4
0.5
0.5
0.4
0.4
0.4
0.4

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

0
0
0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.3
0.3
0.4
0.4
0.3
0.3
0.2
0.2
0.3

65° NE ENE
235° SW SW
230° SW SW
230° SW SW
185° S S
230° SW SW
185° S S
10° N N
10° N N
235° SW SW
190° S S
55° NE NE
235° SW SW
55° NE NE
275° W W
290° W WNW
25° NE NNE
25° NE NNE
25° NE NNE
30° NE NNE
30° NE NNE
35° NE NE
25° NE NNE
20° N NNE

0.2
0.2
0.2
0.3
0.2
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.3
0.3
0.3
0.3
0.3

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

140
150
150
140
120
120
120
120
110
110
110
110
110
110
100
80
80
80
25
25
25
25
35
35

6.4
9.3
11.3
11.9
11.1
9.4
7.1
4.6
2.6
1.5
1.5
3.0
5.4
8.2
10.5
11.6
11.3
10.0
7.9
5.5
3.4
2.0
1.7
2.7

17 62
17 62
17 62
17 62
17 62
17 62
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 63
17 62
17 62

100
95
100
100
100
100
100
100
95
90
85
90
90
90
90
85
85
85
90
90
90
90
95
90

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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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

1032
1032
1032
1033
1034
1034
1034
1034
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1032
1032

0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

12 54
13 55
13 56
14 57
15 59
15 59
16 60
16 60
16 60
16 61
16 61
16 60
16 60
15 59
15 60
15 60
15 59
15 59
15 59
15 58
14 58
14 58
14 58
14 57

12 53
12 53
12 54
12 54
14 58
14 57
14 57
14 57
15 59
15 59
15 58
14 56
13 55
12 53
12 53
11 52
11 52
11 52
11 51
11 52
11 51
11 51
10 51
10 50

6 11 2 3 7
8 14 3 4 9
7 13 3 4 8
8 15 3 4 9
8 15 3 4 9
9 17 3 5 11
10 18 3 5 11
10 18 3 5 11
10 18 3 5 11
10 18 3 5 11
10 19 3 5 12
10 19 3 5 12
11 21 4 6 13
13 24 4 7 15
13 24 4 7 15
15 27 4 8 17
15 27 4 8 17
14 26 4 7 16
14 26 4 7 16
13 24 4 7 15
13 24 4 7 15
13 24 4 7 15
13 25 4 7 16
14 26 4 7 16

0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.6
0.7
0.7
0.7
0.7
0.7
0.6
0.7
0.7

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

Expert opinion

High 1034 hPa centered to the West of Ireland moving at 7 knots to the East-North-East to be centered on Northern Ireland.

For Grève de Saint Marc :
No gale warning.

The reliability of the situation is assessed at 90%.

Very cloudy skies to overcast. The risk of seeing rain will remain low. In the evening, very cloudy.
No precipitation. ENE force 2 becoming force 3 in the middle of the day then force 4. Gusts reaching 17 knots in the evening. Smooth sea becoming smooth to slight in the middle of the day. Low, fairly long swell from S. Good visibility becoming excellent in the middle of the day.

Tides at Saint-Quay-Portrieux

102

Low tide 04h10 1.11m

High tide 09h52 11.87m

96

Low tide 16h31 1.34m

High tide 22h14 11.63m

www.shom.fr - © SHOM 2025

Consult the tides for October

Fri

10

-

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

Sat

11

-

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

Sun

12

-

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

Mon

13

-

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

Tue

14

-

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

Wed

15

-

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

Thu

16

-

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

Fri

17

-

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

Sat

18

-

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

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

* +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