Weather Grève de l'Isnain - Detailed bulletin - Free 15-day Marine forecasts

Saint-Quay-Portrieux (22410)Lon : -2°50’,2836 W Lat : 48°39’,486 N Alt : 0m

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BULLETIN

Reliability 85%

No gale warning.

No weather risk at the spot

Thursday 21 may

METEO CONSULT Run : 21/05 00Z Mesh : 4km Updated, 9min ago Update in 6min

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

25

20

15

10

5

10

5

0

15

10

5

0

5

0

0.5

0

3

0

40

30

20

10

100

90

80

70

60

50

                                    
                                                                         Fri 22
                                                            
                    23h
                
                    00h
                
                    01h
                
                    02h
                
                    03h
                
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                    18h
                
                    19h
                
                    20h
                
                    21h
                
                    22h
                
                        Run : 21/05 00Z
                Mesh : 4km
                Updated, 9min ago
                Update in 6min

Fri 22

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

145° SE SE
150° SE SSE
155° SE SSE
165° S SSE
165° S SSE
170° S S
165° S SSE
170° S S
170° S S
165° S SSE
150° SE SSE
140° SE SE
130° SE SE
120° SE ESE
115° SE ESE
110° E ESE
115° SE ESE
135° SE SE
145° SE SE
165° S SSE
180° S S
200° S SSW
265° W W
260° W W

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

4 8 2 5 2
5 10 3 6 2
6 12 3 7 3
7 13 4 8 3
8 15 4 9 3
8 15 4 9 3
8 15 4 9 3
7 13 4 8 3
6 12 3 7 3
6 11 3 7 2
8 14 4 9 3
9 16 4 10 3
9 16 4 10 3
9 17 5 11 3
9 16 4 10 3
9 17 5 11 3
10 19 5 12 3
12 22 6 14 4
11 20 6 12 4
11 20 6 12 4
11 21 6 13 4
10 18 5 11 3
10 18 5 11 3
11 20 6 12 4

0.2
0.2
0.2
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1

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

270° W W
270° W W
265° W W
265° W W
265° W W
355° N N
265° W W
355° N N
265° W W
265° W W
355° N N
355° N N
355° N N
355° N N
265° W W
265° W W
265° W W
265° W W
265° W W
355° N N
355° N N
355° N N
355° N N
355° N N

0.2
0.2
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1

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

100
140
150
150
150
160
160
150
120
160
160
160
160
160
170
170
180
180
180
180
170
180
170
170

10.1
10.1
9.4
8.0
6.3
4.7
3.4
2.8
3.0
4.1
5.8
7.6
9.0
9.6
9.4
8.4
7.1
5.6
4.3
3.6
3.5
4.2
5.6
7.3

16 60
15 60
15 60
15 59
15 59
15 59
15 59
15 59
15 59
15 59
15 59
15 59
15 59
15 60
16 60
16 60
16 61
16 62
17 62
17 62
17 63
17 63
17 63
17 63

5
5
5
5
0
0
0
0
0
0
5
5
0
0
5
5
5
5
5
10
5
5
5
10

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

1024
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1023
1023
1023
1024

0
0
0
0
0
0
0
0
0
0
1
2
4
5
6
7
6
5
4
2
1
0
0
0

18 64
17 63
17 62
16 60
15 60
15 59
15 58
14 57
12 54
14 56
17 62
18 65
20 68
22 71
23 73
23 74
24 75
25 77
25 77
25 78
26 78
25 77
23 74
21 69

17 62
16 61
15 60
14 57
13 56
13 56
13 55
13 55
11 52
13 56
18 64
21 69
27 80
29 85
31 88
32 90
33 92
33 92
33 91
32 89
30 86
29 84
26 79
23 73

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

0.4
0.4
0.4
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
0.3
0.3
0.3
0.3
0.3

Forecasts established in local time
Caption Glossary

Expert opinion

An easterly 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 l"Isnain :
No gale warning.

We are 85% sure of the situation, because the high pressure system could move in more quickly than forecast.

In the evening, skies with few clouds.
SE wind force 1. Gusts reaching 4 knots in the evening. Smooth sea. Low, short swell from W. Excellent visibility.

Tides at Saint-Quay-Portrieux

76

Low tide 05h28 2.17m

High tide 11h17 10.26m

70

Low tide 17h46 2.81m

High tide 23h30 10.24m

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

Consult the tides for May

Go further

Thu

21

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

Fri

22

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

Sat

23

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

Sun

24

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

Mon

25

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

Tue

26

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

Wed

27

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

Thu

28

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

Fri

29

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

Sat

30

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

Sun

31

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

Mon

01

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

Tue

02

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Wed

03

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

Thu

04

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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 l'Isnain

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Saint-Quay-Portrieux

Go further