Weather Plage des Grandes Vallées - Detailed bulletin - Free 15-day Marine forecasts

Pornic FRALongitude : -2°7’,416 W Latitude : 47°6’,654 N Altitude : 0m

Fri

21

-

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

Sat

22

-

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

Sun

23

-

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

Mon

24

-

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

Tue

25

-

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

Wed

26

-

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

Thu

27

-

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

Fri

28

-

- 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

-

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

Tue

04

-

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

Wed

05

-

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

BULLETIN

(established in local time)

Reliability 85%

Wind alert - Warning strong breeze offshore.

Friday 21 february

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)

40

30

20

10

0

70

60

50

40

30

20

10

20

15

10

5

0

40

30

20

10

0

10

5

0

1.5

1

0.5

9

6

3

0

15

10

5

60

55

50

45

40

Sat 22

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

165° S SSE
165° S SSE
170° S SSE
170° S SSE
170° S S
175° S S
175° S S
180° S S
190° S S
195° S SSW
180° S S
195° S SSW
190° S S
200° S SSW
205° SW SSW
210° SW SSW
220° SW SW
235° SW WSW
255° W WSW
260° W W
260° W W
260° W W
260° W W
255° W WSW

19 36 10 22 5
21 38 11 24 5
21 38 11 24 5
20 37 10 23 5
19 35 10 22 5
18 33 9 21 5
15 28 8 17 4
13 25 7 16 4
12 22 6 14 4
10 19 5 12 3
8 15 4 9 3
8 14 4 9 3
7 13 4 8 3
8 15 4 9 3
10 18 5 11 3
9 17 5 11 3
8 15 4 9 3
9 17 5 11 3
10 18 5 11 3
9 17 5 11 3
8 15 4 9 3
8 15 4 9 3
8 15 4 9 3
8 15 4 9 3

32 60 17 37 7
34 63 18 39 8
33 62 17 39 8
32 60 17 37 7
31 57 16 35 7
28 52 14 32 7
28 51 14 32 7
25 47 13 29 6
21 39 11 24 6
19 36 10 22 5
17 32 9 20 5
15 27 8 17 4
14 26 7 16 4
16 30 8 19 5
17 31 9 19 5
15 28 8 17 4
17 31 9 19 5
17 31 9 19 5
17 32 9 20 5
15 27 8 17 4
15 27 8 17 4
12 23 6 14 4
13 24 7 15 4
13 25 7 16 4

1.2
1.2
1.2
1.2
1.1
1.1
1.1
1.1
1.1
1
1
1
1
1.1
1.1
1.1
1.1
1
1
1
1
0.9
0.9
0.9

2.2
2.2
2.2
2.2
2.1
2.1
2.1
2.1
2
2
1.9
1.9
1.9
2
2
2
2
1.9
1.9
1.9
1.9
1.8
1.7
1.7

0.8
0.9
0.8
0.8
0.7
0.6
0.5
0.5
0.3
0.2
0
0.1
0.1
0.1
0.1
0.2
0.1
0.1
0.1
0.1
0.1
0
0
0

235° SW SW
235° SW SW
235° SW SW
235° SW SW
235° SW SW
235° SW SW
230° SW SW
240° SW WSW
245° SW WSW
245° SW WSW
245° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
245° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW

0.8
0.8
0.8
0.8
0.9
0.9
0.9
0.9
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
0.9
0.9
0.9

12
12
12
12
12
12
12
14
12
12
12
14
14
13
13
14
13
13
14
14
14
14
14
14

150
80
90
210
220
230
240
250
260
280
330
330
330
310
310
310
300
330
330
330
330
330
330
330

3.8
3.5
3.2
3.0
2.8
2.8
2.9
3.1
3.5
3.8
4.1
4.2
4.1
3.9
3.6
3.2
2.9
2.7
2.7
2.9
3.2
3.5
3.8
4.0

9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48
9 48

100
80
85
85
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
85
95
65
65
45

0.4
0
0
0
0
0
0.2
0.7
0.8
2
2.3
2.5
2.5
2.1
1.9
1.6
1.2
1.3
0
0
0
0
0
0

-
-
-
-
-
-

90
0
0
0
0
25
50
80
90
90
90
100
100
100
100
90
70
55
40
40
30
20
0
0

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

1013
1012
1012
1011
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1010
1010
1011
1011
1012
1013
1014
1016
1017
1018

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

13 56
13 55
13 56
13 55
13 56
13 55
12 54
12 53
12 53
11 53
11 52
11 52
11 52
11 51
11 51
10 51
10 50
10 50
10 50
10 51
10 50
10 50
11 52
12 53

7 44
9 47
8 46
8 46
8 46
8 46
7 45
7 45
8 46
8 46
8 47
8 47
8 47
8 46
7 45
7 45
7 45
7 44
7 44
7 44
7 45
7 45
9 48
11 52

24 44 6 12 27
24 44 6 12 27
23 42 6 12 26
23 42 6 12 26
21 39 6 11 24
21 38 5 11 24
19 36 5 10 22
18 34 5 9 21
16 29 5 8 18
12 23 4 6 14
9 17 3 5 11
8 15 3 4 9
8 15 3 4 9
12 22 4 6 14
9 17 3 5 11
11 20 4 6 12
10 19 3 5 12
12 23 4 6 14
12 22 4 6 14
11 21 4 6 13
11 21 4 6 13
10 19 3 5 12
9 17 3 5 11
8 15 3 4 9

3.1
3
3
3
3
3
3.1
3.1
3.2
3.2
3.2
3.2
3.2
3.3
3.2
3.2
3.1
3.1
3
3
2.9
2.9
2.8
2.8

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

Expert opinion

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

For Plage des Grandes Vallées :
Warning strong breeze offshore.

We are 85% sure of the situation, because the atmosphere might be less unstable and showers more frequent than forecast.

Very cloudy skies to overcast. Risk of some spots of rain in the morning, light rain gradually becoming less frequent in the afternoon. In the evening, overcast skies.
Light rain getting progressively heavier. SSE force 5 in the morning becoming S force 4 in the evening. Gusts reaching 34 knots in the middle of the day. Slight sea. Low, fairly long swell from SW. Excellent visibility becoming poor in the evening.

Tides at Pornic

32

Low tide 04h16 2.54m

High tide 09h04 4.35m

28

Low tide 16h50 2.75m

High tide 23h07 4.22m

www.shom.fr - © SHOM 2025

Consult the tides for February

Fri

21

-

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

Sat

22

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

Sun

23

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

Mon

24

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

Tue

25

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

Wed

26

-

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

Thu

27

-

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

Fri

28

-

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

Sat

01

-

- 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

-

- 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

* +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 Plage des Grandes Vallées

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Pornic