Weather Port-Donnant - Detailed bulletin - Free 15-day Marine forecasts

Sauzon FRALongitude : -3°14’,3226 W Latitude : 47°19’,518 N Altitude : 0m

Thu

18

-

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

Fri

19

-

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

Sat

20

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

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

-

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

Fri

26

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

Sat

27

-

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

Sun

28

-

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

Mon

29

-

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

Tue

30

-

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

Wed

01

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

Thu

02

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

BULLETIN

(established in local time)

Reliability 90%

No gale warning.

Thursday 18 september

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)

15

10

5

0

25

20

15

10

5

10

5

0

15

10

5

0

2

1.5

1

3

0

25

20

15

10

75

70

65

60

55

Fri 19

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

205° SW SSW
200° S SSW
190° S S
175° S S
170° S S
165° S SSE
160° S SSE
160° S SSE
160° S SSE
160° S SSE
160° S SSE
155° SE SSE
145° SE SE
130° SE SE
110° E ESE
100° E E
85° E E
75° E ENE
80° E E
80° E E
70° E ENE
75° E ENE
80° E E
90° E E

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

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

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

2.4
2.4
2.4
2.4
2.4
2.5
2.6
2.8
2.8
2.8
2.7
2.5
2.3
2.2
2.2
2.1
2.1
2.2
2.3
2.4
2.5
2.5
2.4
2.6

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
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
265° W W
265° W W
265° W W
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
270° W W
265° W W

1.3
1.3
1.3
1.3
1.3
1.4
1.4
1.5
1.5
1.5
1.5
1.4
1.2
1.2
1.2
1.1
1.1
1.2
1.2
1.3
1.4
1.4
1.3
1.4

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
9
9
9
10
10
9

170
170
170
160
160
170
170
170
170
170
170
170
160
160
160
150
150
150
160
160
160
160
160
140

3.2
2.5
2.0
1.7
1.8
2.2
2.8
3.5
4.1
4.5
4.6
4.3
3.6
2.8
2.0
1.5
1.4
1.6
2.2
2.9
3.7
4.2
4.5
4.4

18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 64
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 65
18 64
18 64
18 64
18 64
18 64

100
85
80
80
80
80
85
85
55
85
40
35
25
25
15
5
5
5
10
5
10
10
10
5

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

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

1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1022
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1019
1018
1018

0
0
0
0
1
1
2
2
4
3
3
2
1
0
0
0
0
0
0
0
0
0
0
0

17 63
17 62
17 62
18 64
18 65
18 65
19 66
19 66
19 66
19 66
19 66
19 66
19 66
19 66
17 63
16 61
16 60
16 61
16 62
16 62
17 62
17 62
17 62
17 62

15 59
15 58
15 58
16 61
18 64
19 66
20 67
20 69
21 70
21 70
21 70
20 68
19 67
18 65
15 59
14 57
14 56
15 58
15 58
15 58
15 58
15 58
15 58
15 58

5 9 2 3 6
6 12 3 3 7
6 11 2 3 7
6 11 2 3 7
7 13 3 4 8
8 14 3 4 9
9 16 3 4 10
9 16 3 4 10
8 15 3 4 9
8 15 3 4 9
7 13 3 4 8
6 11 2 3 7
5 9 2 3 6
4 8 2 2 5
4 8 2 2 5
5 9 2 3 6
5 9 2 3 6
4 8 2 2 5
4 7 2 2 4
4 7 2 2 4
5 9 2 3 6
5 10 2 3 6
6 11 2 3 7
6 12 3 3 7

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

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

Expert opinion

An easterly and mostly variable flow prevails over the South-East of the basin. Over the West and the North, it is southerly, strong and mostly variable.

For Port-Donnant :
No gale warning.

We are 90% sure of the situation, because the clear patches could move in later than forecast.

Very cloudy. But clear spells will become more and more widespread. No precipitation. In the evening, light cloudy spells.
S force 3 in the morning turning ESE force 2 in the evening. Gusts reaching 11 knots in the middle of the day. Slight sea temporarily moderate in the middle of the day. Low, fairly long swell from W temporarily moderate in the middle of the day. Poor visibility becoming excellent in the middle of the day then good.

Tides at Belle-Ile (Le Palais)

54

High tide 03h31 4.26m

Low tide 09h10 1.7m

61

High tide 15h47 4.6m

Low tide 21h46 1.34m

www.shom.fr - © SHOM 2025

Consult the tides for September

Thu

18

-

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

Fri

19

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

Sat

20

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

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

-

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

Fri

26

-

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

Sat

27

-

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

Sun

28

-

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

Mon

29

-

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

Tue

30

-

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

Wed

01

-

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

Thu

02

-

- 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 Port-Donnant

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

Tides at Belle-Ile (Le Palais)