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

Pornic FRALong : -2°7’,416 W Lat : 47°6’,654 N Alt : 0m

Sun

21

-

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

Mon

22

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

Tue

23

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

Wed

24

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

Thu

25

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

Fri

26

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

Sat

27

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

Sun

28

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

Mon

29

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

Tue

30

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

Wed

31

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

Thu

01

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

Fri

02

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

Sat

03

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

Sun

04

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

BULLETIN

(* established in local time)

Reliability 85%

Wind alert - Warning moderate gale offshore.

Sunday 21 dec

METEO CONSULT Run : 21/12 16Z Mesh : 1km Updated, 2h ago Update in 4h

Wind

Average winds

Gusts

10m above ground level:

Direction

Speed

Gusts

Waves

Total sea (m) (m)

Swell (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 (%)

Storm 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

60

50

40

30

20

15

10

5

40

30

20

10

5

0

1.5

1

0.5

3

0

15

10

5

0

55

50

45

40

35

                                    
                                                                         Mon 22
                                                            
                    20h
                
                    21h
                
                    22h
                
                    23h
                
                    00h
                
                    01h
                
                    02h
                
                    03h
                
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                    18h
                
                    19h
                
                        Run : 21/12 16Z
                Mesh : 1km
                Updated, 2h ago
                Update in 4h

Mon 22

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

115° SE ESE
120° SE ESE
125° SE ESE
175° S S
185° S S
190° S SSW
190° S S
180° S S
170° S S
155° SE SSE
160° S SSE
150° SE SSE
140° SE SE
135° SE SE
130° SE SE
135° SE SE
140° SE SE
145° SE SE
150° SE SSE
145° SE SE
140° SE SE
130° SE SE
125° SE SE
125° SE SE

12 23 6 14 4
14 26 7 16 4
15 27 8 17 4
17 31 9 19 5
19 36 10 22 5
21 38 11 24 5
18 33 9 21 5
16 29 8 18 5
15 27 8 17 4
13 24 7 15 4
13 24 7 15 4
13 25 7 16 4
13 25 7 16 4
15 27 8 17 4
16 29 8 18 5
15 28 8 17 4
14 26 7 16 4
14 26 7 16 4
15 27 8 17 4
13 25 7 16 4
12 23 6 14 4
12 22 6 14 4
12 22 6 14 4
11 21 6 13 4

19 35 10 22 5
21 38 11 24 5
21 39 11 24 6
30 56 16 35 7
31 58 16 36 7
31 58 16 36 7
30 56 16 35 7
27 50 14 31 7
25 46 13 29 6
24 44 12 27 6
23 43 12 27 6
23 43 12 27 6
22 41 11 25 6
22 40 11 25 6
22 41 11 25 6
23 42 12 26 6
23 42 12 26 6
22 40 11 25 6
22 41 11 25 6
21 38 11 24 5
19 36 10 22 5
18 33 9 21 5
18 33 9 21 5
18 33 9 21 5

0.9
1
1
1.1
1.1
1.1
1.1
1
1
1
0.9
0.9
0.9
0.9
0.9
0.8
0.8
0.8
0.8
0.7
0.7
0.7
0.7
0.7

1.8
1.8
1.9
2
2.1
2.1
2
1.9
1.9
1.9
1.8
1.8
1.7
1.7
1.6
1.6
1.6
1.5
1.5
1.4
1.4
1.3
1.3
1.3

0.2
0.2
0.3
0.5
0.5
0.5
0.5
0.4
0.3
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

240° SW WSW
240° SW WSW
235° SW SW
180° S S
185° S S
180° S S
180° S S
240° SW WSW
245° SW WSW
250° W WSW
240° SW WSW
250° W WSW
250° W WSW
250° W WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW

0.9
0.9
0.9
0.8
0.8
0.8
0.8
0.9
1.0
1.0
0.9
0.9
0.9
0.8
0.8
0.8
0.8
0.8
0.7
0.7
0.7
0.7
0.6
0.7

15
15
15
16
14
16
17
14
11
11
13
12
11
11
13
13
13
13
12
12
12
11
12
12

410
420
330
310
300
290
260
240
220
290
250
260
260
250
250
240
230
260
240
230
230
240
250
250

3.9
3.0
2.3
1.8
1.6
2.0
2.8
3.9
4.8
5.4
5.4
5.0
4.2
3.4
2.5
1.8
1.5
1.6
2.3
3.3
4.3
5.0
5.2
4.9

12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53
12 53

100
100
90
100
100
85
90
75
90
90
90
70
80
70
85
85
70
70
85
65
55
50
45
45

0.8
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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

100
95
0
0
20
25
20
20
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
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20

997
997
997
997
998
998
999
999
1000
1000
1000
1001
1002
1003
1004
1004
1004
1004
1004
1004
1005
1005
1006
1006

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

10 50
10 49
9 48
10 49
9 49
10 49
10 49
9 49
9 48
8 47
8 47
8 46
7 45
7 45
7 45
8 46
9 48
10 49
10 50
10 50
10 49
9 48
8 47
8 46

6 43
5 42
4 40
4 39
3 37
3 38
4 39
4 39
4 39
4 39
4 39
3 38
3 37
2 36
2 36
3 38
5 42
7 44
7 44
7 44
6 43
5 41
4 39
3 38

22 41 6 11 25
15 27 4 8 17
24 44 6 12 27
25 47 6 13 29
25 47 6 13 29
24 45 6 13 28
22 41 6 11 25
21 39 6 11 24
20 37 5 10 23
18 34 5 9 21
18 34 5 9 21
18 34 5 9 21
17 32 5 9 20
17 31 5 9 19
16 30 5 8 19
16 30 5 8 19
17 31 5 9 19
17 31 5 9 19
17 31 5 9 19
15 28 4 8 17
15 27 4 8 17
16 29 5 8 18
17 32 5 9 20
16 29 5 8 18

2.9
2.8
2.9
2.9
2.9
2.9
2.8
2.7
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.1
2
2
2
2
2
2
1.9
1.8

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

Expert opinion

Low 997 hPa centered on the South-East of the Bay of Biscay moving at 14 knots to the North-West and dropping to 993 hPa to be centered on the North of the Bay of Biscay.

For Plage des Grandes Vallées :
Warning moderate gale offshore.

We are 85% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will end.

In the evening, overcast skies.
Light rain followed by showers. ESE wind force 5. Gusts reaching 30 knots in the evening. Slight sea. Low, long swell from S. Excellent visibility.

Tides at Pornic

73

High tide 04h52 5.42m

Low tide 11h44 1.52m

73

High tide 17h11 5.19m

Low tide 23h57 1.62m

www.shom.fr - © SHOM 2025

Consult the tides for December

Go further

Sun

21

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

Mon

22

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

Tue

23

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

Wed

24

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

Thu

25

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

Fri

26

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

Sat

27

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

Sun

28

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

Mon

29

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

Tue

30

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

Wed

31

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

Thu

01

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

Fri

02

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

Sat

03

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

Sun

04

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- 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

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