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

Saint-Quay-Portrieux (22410)Longitude : -2°50’,2836 W Latitude : 48°39’,486 N Altitude : 0m

Sat

25

-

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

Sun

26

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

Mon

27

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

Tue

28

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

Wed

29

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

Thu

30

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

Fri

31

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

Sat

01

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

Sun

02

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

Mon

03

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

Tue

04

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

Wed

05

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

Thu

06

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

Fri

07

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Sat

08

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

BULLETIN

(established in local time)

Reliability 80%

Wind alert - Warning moderate gale offshore.

Saturday 25 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)

30

25

20

15

10

60

50

40

30

20

15

10

5

35

30

25

20

15

10

5

0

1

0.5

0

3

0

15

10

5

0

60

55

50

45

40

Sun 26

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

285° W WNW
285° W WNW
300° NW WNW
310° NW NW
310° NW NW
315° NW NW
315° NW NW
315° NW NW
310° NW NW
305° NW NW
305° NW NW
305° NW WNW
310° NW NW
310° NW NW
305° NW WNW
285° W WNW
270° W W
270° W W
270° W W
275° W W
285° W WNW
300° NW WNW
310° NW NW
305° NW NW

12 23 6 14 4
12 23 6 14 4
15 27 8 17 4
15 28 8 17 4
17 31 9 19 5
17 32 9 20 5
18 33 9 21 5
18 33 9 21 5
19 35 10 22 5
18 33 9 21 5
17 32 9 20 5
17 31 9 19 5
17 31 9 19 5
17 31 9 19 5
15 28 8 17 4
13 24 7 15 4
12 23 6 14 4
13 25 7 16 4
14 26 7 16 4
14 26 7 16 4
16 30 8 19 5
17 31 9 19 5
17 31 9 19 5
17 32 9 20 5

19 36 10 22 5
19 36 10 22 5
22 40 11 25 6
24 44 12 27 6
25 47 13 29 6
25 47 13 29 6
27 50 14 31 7
26 48 13 30 6
27 50 14 31 7
27 50 14 31 7
26 49 14 30 6
26 48 13 30 6
25 47 13 29 6
25 46 13 29 6
26 48 13 30 6
22 41 11 25 6
18 33 9 21 5
20 37 10 23 5
20 37 10 23 5
22 41 11 25 6
26 48 13 30 6
26 49 14 30 6
28 52 14 32 7
28 52 14 32 7

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

1.1
1.1
1.1
1.2
1.2
1.2
1.2
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
1.3
1.2
1.1
1.1
1.2
1.5
1.6
1.6
1.7

0.1
0.2
0.4
0.5
0.5
0.5
0.6
0.4
0.3
0.5
0.3
0.3
0.3
0.2
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
0.3
0.3

195° S SSW
195° S SSW
200° S SSW
200° S SSW
205° SW SSW
230° SW SW
205° SW SSW
205° SW SSW
205° SW SSW
205° SW SSW
200° S SSW
200° S SSW
200° S SSW
200° S SSW
200° S SSW
200° S SSW
195° S SSW
220° SW SW
220° SW SW
195° S SSW
345° N NNW
345° N NNW
345° N NNW
345° N NNW

0.5
0.5
0.4
0.3
0.3
0.3
0.2
0.5
0.5
0.2
0.6
0.6
0.6
0.7
0.7
0.6
0.6
0.5
0.5
0.6
0.8
0.8
0.8
0.8

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

50
45
40
40
40
45
40
40
40
45
45
45
45
45
45
45
45
60
60
45
60
60
60
60

10.4
10.5
9.7
8.2
6.4
4.6
3.2
2.7
3.1
4.5
6.5
8.5
9.9
10.3
9.5
7.8
5.7
-
4.0
3.1
3.3
4.5
6.3
8.2

16 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 60
15 59
15 59
15 59
15 59
15 59
15 59

30
90
70
95
90
90
95
90
80
85
55
85
75
80
25
40
75
85
65
90
90
80
95
80

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

-
-
-
-
-
-

40
40
70
70
50
45
45
40
25
30
35
30
0
0
0
0
0
0
25
50
60
60
45
35

>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20

1007
1008
1008
1009
1010
1010
1011
1011
1012
1012
1012
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1015

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

11 51
11 52
12 54
12 54
13 55
13 56
13 55
13 55
13 55
12 54
11 52
11 51
11 51
11 51
10 51
10 50
10 49
10 49
10 50
10 51
11 51
11 51
11 51
10 51

7 45
8 46
8 47
9 48
10 50
10 51
9 48
9 48
8 47
7 45
6 42
5 42
5 41
5 41
5 41
6 42
5 42
5 41
5 41
6 42
5 41
5 41
5 41
5 41

20 37 5 10 23
23 42 6 12 26
22 40 6 11 25
21 39 6 11 24
20 37 5 10 23
23 43 6 12 27
23 42 6 12 26
24 45 6 13 28
24 44 6 12 27
25 46 6 13 29
26 48 6 13 30
26 49 6 14 30
26 49 6 14 30
25 47 6 13 29
24 45 6 13 28
24 44 6 12 27
25 46 6 13 29
26 48 6 13 30
26 48 6 13 30
25 47 6 13 29
28 51 7 14 32
28 52 7 14 32
26 49 6 14 30
25 47 6 13 29

1.5
1.5
1.5
1.5
1.6
1.6
1.6
1.6
1.6
1.7
1.7
1.8
1.8
1.8
1.7
1.7
1.7
1.8
1.8
1.9
1.9
1.9
1.9
1.8

Forecasts established in local time
Last updated 2h ago | Next update in 1h
Caption

Expert opinion

A northwesterly, very strong and mostly variable flow prevails over the whole area.

For Grève de l"Isnain :
Warning moderate gale offshore.

We are 80% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.

Skies changeable becoming cloudier in late morning. Light showers all day. In the evening, good clear periods but lots of cloud, too.
Possibility of showers W force 4 in the morning turning NW force 5 in the middle of the day. Gusts reaching 27 knots from the middle of the day. Smooth to slight sea becoming slight in the middle of the day. Low, short swell from SSW. Excellent visibility becoming excellent in the middle of the day.

Tides at Saint-Quay-Portrieux

72

Low tide 03h53 2.55m

High tide 09h34 10.62m

68

Low tide 16h09 2.66m

High tide 21h48 10.29m

www.shom.fr - © SHOM 2025

Consult the tides for October

Sat

25

-

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

Sun

26

-

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

Mon

27

-

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

Tue

28

-

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

Wed

29

-

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

Thu

30

-

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

Fri

31

-

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

Sat

01

-

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

Sun

02

-

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

Mon

03

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

Tue

04

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

Wed

05

-

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

Thu

06

-

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

Fri

07

-

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

Sat

08

-

- 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 l'Isnain

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Saint-Quay-Portrieux