Weather Saint-Nazaire - Detailed bulletin - Free 15-day Marine forecasts

Saint-Nazaire FRALon : -2°12’,198 W Lat : 47°16’,002 N Alt : 0m

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Mon

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Tue

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Wed

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Thu

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Fri

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Sat

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Sun

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Mon

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Tue

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Wed

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Thu

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BULLETIN

Reliability 90%

No gale warning.

Marine wind risk

Thursday 21 may

METEO CONSULT Run : 20/05 00Z Mesh : 1km Updated, 9h ago Update imminent

Wind

Average winds

Gusts

10m above ground level:

Direction

Speed

Gusts

Waves

Total sea (m) (m)

Swell (m) (m)

legend.title.wave_height

Total sea (m)

legend.title.wind_sea

Wind (m)

legend.title.swell

Swell direction

Swell height (m)

Swell period (s)

Wave length (m)

High tide (m)

Sea temp

Weather

Rain (mm) (mm)

Clouds:

Cloud cover (%)

Precipitation:

Amount of precipitation (mm)

Type of precipitation

Risks:

Precipitation risk (%)

Storm risk. (%)

Brightness:

Visibility (km)

Pressure (hPa)

UV

Temperature

Air temp

Perceived temp

Air temp

Perceived temp

Offshore

Offshore wind

Offshore sea (m)

15

10

5

0

30

20

10

0

10

5

0

15

10

5

0

5

0

0.5

0

3

0

40

30

20

10

0

90

80

70

60

50

40

                                    
                                                                         Fri 22
                                                            
                    02h
                
                    03h
                
                    04h
                
                    05h
                
                    06h
                
                    07h
                
                    08h
                
                    09h
                
                    10h
                
                    11h
                
                    12h
                
                    13h
                
                    14h
                
                    15h
                
                    16h
                
                    17h
                
                    18h
                
                    19h
                
                    20h
                
                    21h
                
                    22h
                
                    23h
                
                    00h
                
                    01h
                
                        Run : 20/05 00Z
                Mesh : 1km
                Updated, 9h ago
                Update imminent

Fri 22

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

230° SW SW
175° S S
120° SE ESE
80° E E
85° E E
70° E ENE
70° E ENE
80° E E
85° E E
95° E E
110° E ESE
135° SE SE
140° SE SE
130° SE SE
115° SE ESE
110° E ESE
120° SE ESE
130° SE SE
140° SE SE
90° E E
105° E ESE
80° E E
90° E E
105° E ESE

2 3 1 2 1
2 4 1 2 1
3 5 1 3 1
3 6 2 4 2
3 6 2 4 2
3 6 2 4 2
4 7 2 4 2
5 9 3 6 2
5 10 3 6 2
5 9 3 6 2
5 9 3 6 2
4 7 2 4 2
3 6 2 4 2
3 6 2 4 2
4 7 2 4 2
4 8 2 5 2
4 8 2 5 2
3 5 1 3 1
1 2 1 1 1
1 2 1 1 1
2 3 1 2 1
3 5 1 3 1
3 6 2 4 2
4 7 2 4 2

3 6 2 4 2
4 8 2 5 2
5 10 3 6 2
6 11 3 7 2
6 12 3 7 3
6 12 3 7 3
8 14 4 9 3
10 18 5 11 3
11 21 6 13 4
12 22 6 14 4
11 21 6 13 4
11 21 6 13 4
10 19 5 12 3
10 19 5 12 3
11 21 6 13 4
11 21 6 13 4
11 21 6 13 4
10 18 5 11 3
7 13 4 8 3
6 11 3 7 2
6 11 3 7 2
5 10 3 6 2
7 13 4 8 3
8 14 4 9 3

0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.3

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

215° SW SW
225° SW SW
230° SW SW
225° SW SW
235° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
235° SW SW
225° SW SW
225° SW SW
235° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW
225° SW SW

0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.2

10
10
10
9
10
9
10
10
9
9
9
9
9
9
9
8
8
8
9
8
8
8
8
9

210
180
160
160
170
170
170
170
180
180
180
170
170
150
140
130
120
130
140
140
150
150
150
150

1.4
1.1
1.4
2.3
3.4
4.4
5.1
5.1
4.7
4.1
3.3
2.5
1.9
1.6
1.7
2.3
3.4
4.4
5.1
5.3
5.0
4.4
3.7
2.8

15 60
15 59
15 59
15 59
15 59
15 59
15 58
15 58
15 58
15 59
15 59
15 59
15 60
16 60
16 60
16 60
16 61
16 61
16 61
16 61
16 61
16 60
16 60
16 60

5
5
5
80
80
85
75
65
60
10
0
5
5
10
10
10
5
5
5
5
5
5
5
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

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
3.5
1.5
0.5
0.5
0.5
2
5
15
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20

1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023

0
0
0
0
0
0
0
1
2
4
6
7
8
7
6
4
3
1
0
0
0
0
0
0

12 53
11 52
11 51
11 51
10 50
10 50
10 51
12 54
14 58
17 63
20 67
21 70
22 72
23 73
24 74
24 75
24 76
24 76
23 74
22 71
20 68
19 65
18 64
17 63

11 52
10 51
10 50
9 49
9 48
9 48
10 49
12 53
16 60
20 69
24 76
30 85
31 88
30 85
29 85
29 84
28 82
27 81
28 82
25 77
19 67
18 64
17 62
16 60

4 7 2 2 4
4 8 2 2 5
5 10 2 3 6
6 11 2 3 7
6 12 3 3 7
7 13 3 4 8
9 16 3 4 10
11 20 4 6 12
10 19 3 5 12
9 17 3 5 11
9 17 3 5 11
8 15 3 4 9
7 13 3 4 8
7 13 3 4 8
7 13 3 4 8
6 11 2 3 7
5 9 2 3 6
4 7 2 2 4
4 7 2 2 4
4 8 2 2 5
4 8 2 2 5
5 10 2 3 6
5 9 2 3 6
4 8 2 2 5

0.9
0.9
0.8
0.8
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
0.5
0.5
0.5
0.5
0.5
0.5
0.5

Forecasts established for the approach to the port, up to 1 mile from the coast, in local time
Caption Glossary

Expert opinion

A southerly, moderate and very variable flow prevails over the whole area.

For Saint-Nazaire :
No gale warning.

We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.

Fog giving way to sun in early morning, sunny in the afternoon. No precipitation. In the evening, clear skies.
E wind force 2 continuing all day. Gusts reaching 12 knots in the morning. Smooth to slight sea. Low, fairly long swell from SW. Visibility reduced by fog becoming excellent in the middle of the day.

semaphore stations

Station St Nazaire-Montoir located 6 km from Saint-Nazaire

	WIND			WEATHER
Local time	Dir. (°)	Speed (nd)	Gust (nd)	Temp. (°C)	Pressure (hPa)	Visibility (M)
02h	0	0	5	9.3	1027	7
01h	320	3	5	11.9	1028	2
00h	0	0	4	12.1	1027	7

observation.semaphores_link

Météo France - RADOME

observation.semaphore_link

Tides at Saint-Nazaire

76

Low tide 03h03 1.12m

High tide 08h30 5.15m

70

Low tide 15h22 1.53m

High tide 20h44 5.29m

www.shom.fr - © SHOM 2026 - Local times

Consult the tides for May

Go further

Thu

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

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

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Thu

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* +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 port Saint-Nazaire

BULLETIN

Wind

Waves

Weather

Temperature

Offshore

Expert opinion

semaphore stations

Tides at Saint-Nazaire

Go further