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

Thu

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Mon

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Tue

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Wed

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Thu

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Fri

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Sat

09

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Sun

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Mon

11

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Tue

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Wed

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Thu

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BULLETIN

Reliability 80%

No gale warning.

Marine wind risk

Thursday 30 apr

METEO CONSULT Run : 30/04 00Z Mesh : 1km Updated, 37min ago Update in 5h

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)

15

10

5

0

30

20

10

0

10

5

0

20

15

10

5

0

5

0

0.5

0

3

0

25

20

15

10

80

70

60

50

                                    
                                                                         Fri 1
                                                            
                    18h
                
                    19h
                
                    20h
                
                    21h
                
                    22h
                
                    23h
                
                    00h
                
                    01h
                
                    02h
                
                    03h
                
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                        Run : 30/04 00Z
                Mesh : 1km
                Updated, 37min ago
                Update in 5h

Fri 1

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

140° SE SE
145° SE SSE
155° SE SSE
160° S SSE
175° S S
210° SW SSW
270° W W
260° W WSW
280° W W
285° W WNW
300° NW WNW
280° W W
275° W W
270° W W
270° W W
265° W W
275° W W
275° W W
330° NW NNW
35° NE NE
35° NE NE
20° N NNE
10° N N
10° N N

5 9 3 6 2
4 8 2 5 2
4 7 2 4 2
3 6 2 4 2
3 5 1 3 1
3 6 2 4 2
3 6 2 4 2
3 5 1 3 1
4 8 2 5 2
3 6 2 4 2
4 7 2 4 2
4 7 2 4 2
4 7 2 4 2
4 8 2 5 2
5 10 3 6 2
5 10 3 6 2
5 9 3 6 2
3 6 2 4 2
1 2 1 1 1
4 7 2 4 2
5 10 3 6 2
7 13 4 8 3
7 13 4 8 3
6 12 3 7 3

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

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
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.1
0.1
0.1

20° N NNE
20° N NNE
15° N NNE
15° N NNE
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
10° N N
5° N N
360° N N
360° N N
355° N N
355° N N
355° N N
355° 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
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2

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

200
200
250
250
240
240
250
240
240
240
240
240
230
230
230
230
230
220
220
210
200
180
160
150

9.4
10.6
10.5
9.5
7.8
5.8
3.9
2.6
2.2
2.8
4.6
6.9
9.0
10.4
10.7
9.9
8.3
6.4
4.4
2.9
2.2
2.4
3.9
6.1

13 55
13 55
13 55
13 56
13 56
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 55
13 56
13 56
13 56
13 55

85
85
80
65
50
65
80
80
85
100
100
100
100
100
95
100
100
95
75
55
55
50
45
50

0.1
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0
0
0
0

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

50
40
45
0
0
0
0
0
0
0
0
0
0
55
0
0
0
0
0
0
0
0
0
0

25
25
25
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

>20
>20
15
15
10
5
4
3
3
2
2
4
4
5
5
10
10
>20
>20
>20
15
15
15
15

1016
1016
1016
1016
1017
1018
1018
1018
1019
1019
1019
1019
1020
1020
1020
1021
1021
1022
1022
1022
1022
1021
1021
1021

1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
4
5
5
4
3

22 71
20 69
19 67
18 64
16 62
16 60
15 59
14 58
14 57
14 56
13 56
13 55
13 55
13 55
12 54
13 55
13 55
14 57
15 59
15 59
16 60
15 59
15 59
14 58

23 73
22 71
18 64
17 62
15 60
14 58
14 56
13 56
12 54
12 54
12 53
12 53
11 52
11 52
11 51
11 53
13 55
16 60
19 66
19 67
20 67
19 66
18 65
17 62

4 7 2 2 4
4 7 2 2 4
2 4 1 1 2
3 6 2 2 4
3 6 2 2 4
2 4 1 1 2
4 7 2 2 4
5 10 2 3 6
7 13 3 4 8
6 12 3 3 7
8 14 3 4 9
7 13 3 4 8
5 10 2 3 6
6 12 3 3 7
6 12 3 3 7
6 12 3 3 7
6 11 2 3 7
5 9 2 3 6
4 8 2 2 5
5 9 2 3 6
5 10 2 3 6
7 13 3 4 8
8 15 3 4 9
8 15 3 4 9

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
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3

Forecasts established in local time
Caption Glossary

Expert opinion

An easterly and very variable flow prevails over the North and the East of the basin. Over the South-West, it is southwesterly, weak and variable.

For Grève de Saint Marc :
No gale warning.

We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.

In the evening, good clear periods but lots of cloud, too.
Light showers progressively becoming less frequent. S wind force 2. Gusts reaching 10 knots in the evening. Smooth to slight sea. Low, short swell from NNE. Poor visibility.

Tides at Saint-Quay-Portrieux

80

Low tide 01h19 2.36m

High tide 07h04 10.56m

81

Low tide 13h42 2.19m

High tide 19h27 10.68m

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

Consult the tides for April

Go further

Thu

30

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

Fri

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

Sat

02

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Sun

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Mon

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Tue

05

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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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Fri

08

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Sat

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Sun

10

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

Mon

11

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Tue

12

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Wed

13

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

Thu

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* +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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