Weather Gros Jonc - Detailed bulletin - Free 15-day Marine forecasts

Le Bois-Plage-en-Ré FRALongitude : -1°24’,5592 W Latitude : 46°10’,956 N Altitude : 0m

Thu

21

-

- 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

-

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

Mon

25

-

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

Tue

26

-

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

Wed

27

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

Thu

28

-

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

Fri

29

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

Sat

30

-

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

Sun

31

-

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

Mon

01

-

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

Tue

02

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

Wed

03

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

Thu

04

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

BULLETIN

(established in local time)

Reliability 90%

No gale warning.

Thursday 21 august

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)

20

15

10

5

0

40

30

20

10

0

10

5

0

25

20

15

10

5

10

5

0

1

0.5

0

3

0

30

25

20

15

10

90

80

70

60

50

Fri 22

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

145° SE SSE
360° N N
5° N N
15° N NNE
25° NE NNE
25° NE NNE
25° NE NNE
30° NE NNE
30° NE NNE
30° NE NNE
35° NE NE
35° NE NE
30° NE NNE
20° N NNE
5° N N
335° NW NNW
320° NW NW
305° NW WNW
295° NW WNW
295° NW WNW
295° NW WNW
320° NW NW
5° N N
30° NE NNE

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

17 32 9 20 5
16 30 8 19 5
17 31 9 19 5
15 28 8 17 4
15 27 8 17 4
13 25 7 16 4
13 24 7 15 4
12 22 6 14 4
12 22 6 14 4
12 23 6 14 4
13 24 7 15 4
13 24 7 15 4
13 24 7 15 4
12 23 6 14 4
12 22 6 14 4
11 21 6 13 4
12 22 6 14 4
15 27 8 17 4
17 31 9 19 5
17 31 9 19 5
17 31 9 19 5
16 29 8 18 5
15 27 8 17 4
14 26 7 16 4

0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.4

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

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
0.1
0.1
0.1
0.2
0.3
0.3
0.2
0.1
0.1

255° W WSW
250° W WSW
255° W WSW
255° W WSW
260° W W
255° W WSW
250° W WSW
245° 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
245° SW WSW
245° SW WSW
240° SW WSW
240° SW WSW
235° SW WSW
240° SW WSW
240° SW WSW
240° SW WSW

0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.4
0.4
0.4
0.4
0.5
0.5
0.5
0.5
0.5
0.4
0.4
0.4
0.4

5
5
5
5
6
7
9
10
11
11
11
11
11
11
11
11
11
11
11
11
10
10
10
10

150
190
180
190
200
200
190
190
190
190
200
210
210
210
210
210
210
200
180
160
150
160
170
170

1.8
2.5
3.5
4.5
5.3
5.6
5.5
4.8
3.7
2.6
1.8
1.4
1.7
2.4
3.4
4.5
5.4
5.9
5.9
5.2
4.1
2.9
1.8
1.2

19 66
19 65
18 65
18 65
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 65
18 65
19 65
19 65
19 65
19 66
19 66
19 66
19 66
19 65

80
85
90
95
95
80
100
85
80
75
65
40
35
20
15
25
40
30
20
15
25
40
30
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
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20

1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1020
1020
1020
1020
1019
1019
1019
1018
1018
1018
1019
1019
1019

0
0
0
0
0
0
0
0
0
0
1
3
5
6
7
6
4
3
2
1
0
0
0
0

19 66
19 67
19 66
19 66
19 66
18 65
18 64
18 64
18 64
18 64
18 65
19 66
20 68
21 70
22 71
22 72
23 73
22 72
22 71
22 71
21 70
21 69
21 69
20 68

16 60
16 60
15 59
15 60
16 60
15 60
15 59
15 59
15 59
16 61
18 64
18 64
25 77
27 81
29 84
27 81
26 78
23 74
24 75
23 73
21 70
21 70
21 69
20 68

13 24 4 7 15
12 23 4 6 14
13 24 4 7 15
12 23 4 6 14
12 22 4 6 14
11 21 4 6 13
11 20 4 6 12
10 18 3 5 11
10 18 3 5 11
10 18 3 5 11
9 17 3 5 11
9 16 3 4 10
8 14 3 4 9
5 10 2 3 6
5 10 2 3 6
8 15 3 4 9
10 19 3 5 12
13 24 4 7 15
13 25 4 7 16
13 25 4 7 16
13 24 4 7 15
10 19 3 5 12
8 14 3 4 9
9 17 3 5 11

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

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

Expert opinion

A northerly and mostly variable flow prevails over the South and the East of the basin. Over the North-West, it is southerly, weak and mostly variable.

For Gros Jonc :
No gale warning.

We are 90% sure of the situation, because the clear patches could be more numerous than forecast.

In the evening, good clear periods but lots of cloud, too.
No precipitation. NW wind force 4. Gusts reaching 21 knots in the evening. Smooth to slight sea. Low, short swell from WSW. Excellent visibility.

Tides at Ile-de-Ré (Saint-Martin)

67

High tide 04h33 5.46m

Low tide 10h12 1.81m

73

High tide 16h50 5.78m

Low tide 22h46 1.41m

www.shom.fr - © SHOM 2025

Consult the tides for August

Thu

21

-

- 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

-

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

Mon

25

-

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

Tue

26

-

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

Wed

27

-

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

Thu

28

-

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

Fri

29

-

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

Sat

30

-

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

Sun

31

-

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

Mon

01

-

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

Tue

02

-

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

Wed

03

-

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

Thu

04

-

- 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 board sports area Gros Jonc

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Ile-de-Ré (Saint-Martin)