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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BULLETIN

Reliability 90%

No gale warning.

No weather risk at the spot

Friday 1 may

METEO CONSULT Run : 1/05 00Z Mesh : 1km Updated, 1h 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)

20

15

10

5

0

30

20

10

0

10

5

0

20

15

10

5

0

10

5

0

0.5

0

3

0

20

15

10

5

65

60

55

50

45

                                    
                                                                         Sat 2
                                                            
                    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 : 1/05 00Z
                Mesh : 1km
                Updated, 1h ago
                Update in 5h

Sat 2

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

30° NE NNE
30° NE NNE
35° NE NE
25° NE NNE
35° NE NE
60° NE ENE
75° E ENE
80° E E
55° NE NE
35° NE NE
40° NE NE
40° NE NE
60° NE ENE
70° E ENE
65° NE ENE
60° NE ENE
70° E ENE
90° E E
110° E ESE
105° E ESE
120° SE ESE
140° SE SE
155° SE SSE
150° SE SSE

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

11 20 6 12 4
10 19 5 12 3
9 16 4 10 3
8 15 4 9 3
6 11 3 7 2
4 7 2 4 2
3 6 2 4 2
3 6 2 4 2
3 5 1 3 1
3 6 2 4 2
5 9 3 6 2
7 13 4 8 3
9 16 4 10 3
10 18 5 11 3
10 19 5 12 3
12 23 6 14 4
13 24 7 15 4
13 24 7 15 4
14 26 7 16 4
13 24 7 15 4
12 22 6 14 4
12 23 6 14 4
13 25 7 16 4
16 29 8 18 5

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
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2

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

355° N N
355° N N
360° 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
355° N N
355° N N
350° N N
355° N N
0° 0 0
15° N NNE
25° NE NNE
30° NE NNE
25° NE NNE
25° NE NNE
25° NE NNE
10° N N
30° NE NNE

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
0.1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2

8
7
8
9
10
10
10
10
10
10
10
10
10
9
9
8
5
5
5
4
4
4
4
4

150
160
160
160
160
170
170
170
170
170
170
160
170
160
140
140
100
50
45
40
80
100
100
90

8.4
10.1
10.8
10.3
9.0
7.0
4.9
3.2
2.2
2.2
3.4
5.5
7.9
9.8
10.7
10.5
9.3
7.5
5.5
3.6
2.4
2.1
3.0
4.9

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

5
5
50
35
40
65
75
60
60
60
80
75
75
100
100
100
100
100
100
100
100
85
90
100

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
1.8
2
0.2
0
0
0
0

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

0
0
0
0
0
0
0
0
0
0
0
0
0
0
25
50
65
70
65
65
45
35
35
45

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10

>20
15
15
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
4
5
10
15
>20
>20

1021
1021
1021
1021
1021
1022
1022
1021
1021
1020
1019
1019
1018
1018
1017
1017
1016
1015
1015
1015
1014
1013
1012
1012

2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
2
2
4
2
1

15 59
15 58
14 56
12 54
12 53
11 52
11 52
11 52
11 51
11 51
11 51
11 51
11 51
11 52
12 54
13 55
13 55
13 55
14 56
14 57
15 59
16 61
17 62
16 62

17 62
15 59
12 54
12 53
11 51
11 51
11 51
11 51
10 51
10 50
10 49
9 48
9 48
9 49
10 51
11 52
11 51
11 52
13 55
13 56
15 59
17 63
18 64
17 62

5 10 2 3 6
5 9 2 3 6
4 8 2 2 5
4 7 2 2 4
3 6 2 2 4
2 4 1 1 2
2 3 1 1 2
2 3 1 1 2
3 5 1 1 3
3 6 2 2 4
5 9 2 3 6
7 13 3 4 8
9 16 3 4 10
9 17 3 5 11
10 18 3 5 11
10 19 3 5 12
10 19 3 5 12
11 20 4 6 12
8 14 3 4 9
9 16 3 4 10
9 16 3 4 10
6 11 2 3 7
6 11 2 3 7
6 12 3 3 7

0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.4

Forecasts established in local time
Caption Glossary

Expert opinion

An easterly, weak and variable flow prevails over the South-East of the basin. Over the West and the North, it is southerly, moderate and very 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, cloud and long sunny periods.
No precipitation. NNE wind force 2. Gusts reaching 11 knots in the evening. Smooth sea. Low, fairly long swell from N. Good visibility.

Tides at Saint-Quay-Portrieux

82

Low tide 01h58 2.16m

High tide 07h40 10.72m

82

Low tide 14h18 2.11m

High tide 20h01 10.81m

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

Consult the tides for May

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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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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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Fri

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Sat

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Sun

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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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* +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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