Weather board sports area La Caserne

Riantec FRALon : -3°19’,2 W Lat : 47°41’,4 N Alt : 4m
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Weather Risk Briefing
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BULLETIN

Reliability 80%
Friday 18 september Friday 18 sep
METEO CONSULT Run : 18/09 12Z Mesh : 1km Updated, 4h ago Update imminent

Wind

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

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)
20
15
10
5
30
25
20
15
10
10
5
0
20
15
10
5
10
5
0
1
0.5
3
0
25
20
15
10
75
70
65
60
55
50
  • Sat 19
  • 21h
  • 22h
  • 23h
  • 00h
  • 01h
  • 02h
  • 03h
  • 04h
  • 05h
  • 06h
  • 07h
  • 08h
  • 09h
  • 10h
  • 11h
  • 12h
  • 13h
  • 14h
  • 15h
  • 16h
  • 17h
  • 18h
  • 19h
  • 20h
Run : 18/09 12Z Mesh : 1km Updated, 4h ago Update imminent
  • Sat 19
  • 21h
  • 22h
  • 23h
  • 00h
  • 01h
  • 02h
  • 03h
  • 04h
  • 05h
  • 06h
  • 07h
  • 08h
  • 09h
  • 10h
  • 11h
  • 12h
  • 13h
  • 14h
  • 15h
  • 16h
  • 17h
  • 18h
  • 19h
  • 20h
  • 265° W W
  • 260° W W
  • 270° W W
  • 255° W WSW
  • 255° W WSW
  • 250° W WSW
  • 250° W WSW
  • 250° W WSW
  • 250° W WSW
  • 250° W WSW
  • 250° W WSW
  • 250° W WSW
  • 240° SW WSW
  • 235° SW SW
  • 235° SW WSW
  • 235° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 235° SW SW
  • 240° SW WSW
  • 250° W WSW
  • 250° W WSW
  • 255° W WSW
  • 9 17 5 11 3
  • 9 16 4 10 3
  • 7 13 4 8 3
  • 8 14 4 9 3
  • 9 16 4 10 3
  • 8 15 4 9 3
  • 9 16 4 10 3
  • 9 16 4 10 3
  • 9 16 4 10 3
  • 9 16 4 10 3
  • 9 17 5 11 3
  • 8 14 4 9 3
  • 8 14 4 9 3
  • 8 15 4 9 3
  • 9 16 4 10 3
  • 9 17 5 11 3
  • 10 18 5 11 3
  • 10 18 5 11 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 9 16 4 10 3
  • 8 14 4 9 3
  • 7 13 4 8 3
  • 16 29 8 18 5
  • 14 26 7 16 4
  • 12 22 6 14 4
  • 11 21 6 13 4
  • 13 24 7 15 4
  • 13 24 7 15 4
  • 13 24 7 15 4
  • 13 24 7 15 4
  • 13 25 7 16 4
  • 13 25 7 16 4
  • 14 26 7 16 4
  • 12 22 6 14 4
  • 11 21 6 13 4
  • 12 23 6 14 4
  • 13 25 7 16 4
  • 15 27 8 17 4
  • 15 28 8 17 4
  • 16 29 8 18 5
  • 15 28 8 17 4
  • 15 28 8 17 4
  • 15 28 8 17 4
  • 15 27 8 17 4
  • 13 25 7 16 4
  • 12 23 6 14 4
  • 0.6
  • 0.6
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.2
  • 0.2
  • 0.2
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.1
  • 0.1
  • 220° SW SW
  • 220° SW SW
  • 220° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 225° SW SW
  • 225° SW SW
  • 225° SW SW
  • 225° SW SW
  • 225° SW SW
  • 230° SW SW
  • 225° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 0.6
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 0.5
  • 11
  • 12
  • 11
  • 11
  • 11
  • 10
  • 10
  • 11
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
  • 10
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  • 9
  • 9
  • 230
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  • 190
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  • 170
  • 170
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  • 160
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  • 160
  • 160
  • 160
  • 150
  • 3.6
  • 3.7
  • 3.6
  • 3.4
  • 3.2
  • 2.9
  • 2.6
  • 2.5
  • 2.5
  • 2.6
  • 2.8
  • 3.2
  • 3.5
  • 3.7
  • 3.7
  • 3.6
  • 3.4
  • 3.1
  • 2.8
  • 2.6
  • 2.5
  • 2.5
  • 2.6
  • 2.9
  • 19 65
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  • 18 65
  • 5
  • 5
  • 80
  • 60
  • 65
  • 65
  • 55
  • 65
  • 70
  • 55
  • 40
  • 75
  • 35
  • 40
  • 35
  • 65
  • 55
  • 70
  • 65
  • 75
  • 80
  • 80
  • 80
  • 70
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • -
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  • -
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  • -
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  • 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
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  • >20
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  • >20
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  • 1021
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  • 1021
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  • 1022
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  • 1023
  • 1024
  • 1024
  • 1024
  • 1024
  • 1024
  • 1024
  • 1024
  • 1024
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 1
  • 2
  • 2
  • 4
  • 3
  • 3
  • 2
  • 1
  • 0
  • 0
  • 0
  • 18 64
  • 17 63
  • 16 60
  • 16 61
  • 16 61
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  • 16 61
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  • 19 65
  • 14 58
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  • 14 57
  • 15 59
  • 17 62
  • 19 66
  • 19 67
  • 21 70
  • 21 70
  • 21 69
  • 20 69
  • 20 67
  • 19 65
  • 18 64
  • 16 61
  • 9 17 3 5 11
  • 8 14 3 4 9
  • 8 14 3 4 9
  • 5 10 2 3 6
  • 6 11 2 3 7
  • 6 12 3 3 7
  • 7 13 3 4 8
  • 8 15 3 4 9
  • 8 14 3 4 9
  • 8 15 3 4 9
  • 8 15 3 4 9
  • 8 15 3 4 9
  • 8 14 3 4 9
  • 7 13 3 4 8
  • 8 14 3 4 9
  • 8 14 3 4 9
  • 9 16 3 4 10
  • 9 16 3 4 10
  • 9 16 3 4 10
  • 8 15 3 4 9
  • 8 15 3 4 9
  • 8 14 3 4 9
  • 7 13 3 4 8
  • 7 13 3 4 8
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.5
  • 0.5
  • 0.5
  • 0.5
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  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.6
  • 0.5
Forecasts established in local time
Caption   Glossary

Expert opinion

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

For La Caserne :
No gale warning.

We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.

In the evening, light cloudy spells.
W wind force 3. Gusts reaching 16 knots in the evening. Smooth to slight sea. Low, fairly long swell from SW. Excellent visibility.

semaphore stations

Station Ile De Groix located 14 km from La Caserne
WIND
WEATHER
Local time Dir.
(°)
Speed
(nd)
Gust
(nd)
Temp.
(°C)
Pressure
(hPa)
Visibility
(M)
20h
290
15
23
17.6
-
7
19h
270
11
18
18.6
-
0
18h
260
9
15
19.3
-
0
Nearby signal stations
Météo France - RADOME
Signal station weather

Tides at Port-Louis

41
Low tide 03h48 2.16m
High tide 09h30 3.98m
35
Low tide 16h15 2.26m
High tide 21h51 3.73m
www.shom.fr - © SHOM 2026 - Local times

Go further

Fri
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