Weather port Saint-Nazaire

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

Reliability 65%
Thursday 16 july Thursday 16 jul
METEO CONSULT Run : 16/07 00Z Mesh : 1km Updated, 49min ago Update in 2h

Wind

Average winds Average winds
Gusts
10m above ground level:
Direction
Speed
Gusts
Under storms

Waves

Total sea (m) (m)
Swell height 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 Amount of precipitation (mm)
Type of precipitation Type of precipitation
Risks:
Precipitation risk Precipitation risk (%)
Storm risk. (%)
Brightness:
Visibility (km)
Pressure (hPa)
UV

Temperature

Air temp Air temp
Perceived temp
Air temp
Perceived temp

Offshore

Offshore wind
Offshore sea (m)
30
20
10
0
40
30
20
10
0
15
10
5
0
30
20
10
0
10
5
0
0.5
0
3
0
40
30
20
10
100
90
80
70
60
  • Fri 17
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  • 00h
  • 01h
  • 02h
  • 03h
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  • 05h
Run : 16/07 00Z Mesh : 1km Updated, 49min ago Update in 2h
  • Fri 17
  • 06h
  • 07h
  • 08h
  • 09h
  • 10h
  • 11h
  • 12h
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  • 00h
  • 01h
  • 02h
  • 03h
  • 04h
  • 05h
  • 65° NE ENE
  • 60° NE ENE
  • 55° NE NE
  • 60° NE ENE
  • 70° E ENE
  • 40° NE NE
  • 60° NE ENE
  • 65° NE ENE
  • 320° NW NW
  • 265° W W
  • 320° NW NW
  • 340° N NNW
  • 330° NW NNW
  • 330° NW NNW
  • 345° N NNW
  • 5° N N
  • 15° N NNE
  • 20° N NNE
  • 345° N NNW
  • 350° N N
  • 290° W WNW
  • 300° NW WNW
  • 325° NW NNW
  • 340° N NNW
  • 6 11 3 7 2
  • 5 10 3 6 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 3 6 2 4 2
  • 3 6 2 4 2
  • 3 6 2 4 2
  • 3 5 1 3 1
  • 2 3 1 2 1
  • 4 7 2 4 2
  • 6 12 3 7 3
  • 4 8 2 5 2
  • 3 5 1 3 1
  • 2 4 1 2 1
  • 8 14 4 9 3
  • 5 9 3 6 2
  • 4 7 2 4 2
  • 4 7 2 4 2
  • 2 3 1 2 1
  • 1 2 1 1 1
  • 2 3 1 2 1
  • 2 3 1 2 1
  • 2 4 1 2 1
  • 3 5 1 3 1
  • 10 18 5 11 3
  • 10 18 5 11 3
  • 8 15 4 9 3
  • 9 17 5 11 3
  • 10 18 5 11 3
  • 12 22 6 14 4
  • 11 20 6 12 4
  • 11 20 6 12 4
  • 15 27 8 17 4
  • 13 24 7 15 4
  • 19 36 10 22 5
  • 19 35 10 22 5
  • 18 34 9 21 5
  • 17 31 9 19 5
  • 21 39 11 24 6
  • 18 33 9 21 5
  • 11 20 6 12 4
  • 10 19 5 12 3
  • 8 14 4 9 3
  • 6 12 3 7 3
  • 6 12 3 7 3
  • 7 13 4 8 3
  • 7 13 4 8 3
  • 7 13 4 8 3
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  • >35 >65 >19 >40 >8
  • >35 >70 >20 >45 >8
  • >35 >70 >20 >40 >8
  • >35 >70 >20 >45 >8
  • >35 >70 >20 >45 >8
  • >40 >75 >21 >45 >9
  • >40 >75 >22 >45 >9
  • >40 >75 >22 >45 >9
  • >40 >75 >21 >45 >9
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  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
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  • 0.1
  • 0.1
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  • 0.1
  • 0.1
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  • 0.1
  • 0.1
  • 0.1
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  • 0.1
  • 0.1
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
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  • 0
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  • 0
  • 0
  • 0
  • 220° SW SW
  • 220° SW SW
  • 240° SW WSW
  • 230° SW SW
  • 225° SW SW
  • 220° SW SW
  • 225° SW SW
  • 230° SW SW
  • 220° SW SW
  • 220° SW SW
  • 225° SW SW
  • 235° SW SW
  • 230° SW SW
  • 235° SW SW
  • 225° SW SW
  • 230° SW SW
  • 225° SW SW
  • 230° SW SW
  • 225° SW SW
  • 225° SW SW
  • 190° S SSW
  • 215° SW SW
  • 225° SW SW
  • 255° W WSW
  • 0.1
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  • 5.5
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  • 3.7
  • 2.5
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  • 1.1
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  • 18 65
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  • 25
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  • 0
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  • 0.2
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  • -
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  • 20
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  • 40
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  • 60
  • 40
  • 65
  • 60
  • 60
  • 40
  • 20
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  • 40
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  • 60
  • 40
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  • 40
  • 20
  • 0
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  • 10
  • 15
  • >20
  • >20
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  • 5
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  • 0
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  • 1
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  • 2
  • 1
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  • 21 69
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  • 22 71
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  • 31 87
  • 32 89
  • 36 96
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  • 37 99
  • 35 95
  • 34 92
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  • 34 93
  • 32 89
  • 26 78
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  • 23 74
  • 20 67
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  • 18 65
  • 18 64
  • 4 8 2 2 5
  • 5 9 2 3 6
  • 5 9 2 3 6
  • 6 11 2 3 7
  • 4 8 2 2 5
  • 5 9 2 3 6
  • 3 6 2 2 4
  • 4 7 2 2 4
  • 5 9 2 3 6
  • 6 12 3 3 7
  • 6 12 3 3 7
  • 6 12 3 3 7
  • 9 17 3 5 11
  • 8 15 3 4 9
  • 5 10 2 3 6
  • 2 3 1 1 2
  • 3 6 2 2 4
  • 6 12 3 3 7
  • 5 10 2 3 6
  • 4 8 2 2 5
  • 3 5 1 1 3
  • 5 9 2 3 6
  • 6 11 2 3 7
  • 6 12 3 3 7
  • 0.2
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  • 0.2
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  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
Forecasts established for the approach to the port, up to 1 mile from the coast, in local time
Caption   Glossary

Expert opinion

An easterly and very variable flow prevails over the North of the basin. Over the South-West, it is southerly, moderate and very variable. Over the South-East, it is northwesterly, weak and very variable.

For Saint-Nazaire :
No gale warning.

We are 65% sure of the situation, because the high pressure system could move in more quickly than forecast.

Fairly cloudless skies becoming changeable during the morning, sun and storm clouds in the afternoon. Risk of some spots of rain in the morning, showers late in the day. In the evening, storms as night falls.
Showers becoming less frequent. NE force 2 turning NW force 3 in the middle of the day then N. Gusts reaching 21 knots in the evening. Smooth sea. Low, short swell from SW. Good visibility 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)
06h
80
12
17
19.6
1017
0
05h
50
12
17
20.4
1017
0
04h
60
8
10
20.1
1017
0
Nearby signal stations
Météo France - RADOME
Signal station weather

Tides at Saint-Nazaire

98
Low tide 00h58 0.56m
High tide 06h49 5.71m
98
Low tide 13h13 0.75m
High tide 18h58 5.97m
www.shom.fr - © SHOM 2026 - Local times

Go further

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