Weather anchorage Mouillage de Saint-Cast

Saint-Cast-le-Guildo FRALon : -2°14’,724 W Lat : 48°38’,442 N Alt : 2m
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Weather Risk Briefing
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BULLETIN

Reliability 65%
Thursday 17 september Thursday 17 sep
METEO CONSULT Run : 12/09 18Z Mesh : 19km Updated, 4h ago Update in 2h

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
25
20
15
10
5
50
40
30
20
10
15
10
5
0
30
20
10
0
10
5
0
1.5
1
0.5
0
3
0
20
15
10
5
65
60
55
50
45
  • Thu 17
  • 00h
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  • 18h
  • 19h
  • 20h
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  • 23h
Run : 12/09 18Z Mesh : 19km Updated, 4h ago Update in 2h
  • Thu 17
  • 00h
  • 01h
  • 02h
  • 03h
  • 04h
  • 05h
  • 06h
  • 07h
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  • 18h
  • 19h
  • 20h
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  • 260° W W
  • 255° W WSW
  • 245° SW WSW
  • 250° W WSW
  • 245° SW WSW
  • 240° SW WSW
  • 235° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 235° SW SW
  • 235° SW SW
  • 235° SW SW
  • 240° SW WSW
  • 235° SW WSW
  • 240° SW WSW
  • 250° W WSW
  • 260° W W
  • 275° W W
  • 285° W WNW
  • 290° W WNW
  • 285° W WNW
  • 280° W W
  • 270° W W
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 6 12 3 7 3
  • 7 13 4 8 3
  • 8 14 4 9 3
  • 9 16 4 10 3
  • 9 17 5 11 3
  • 10 19 5 12 3
  • 11 21 6 13 4
  • 12 22 6 14 4
  • 11 20 6 12 4
  • 11 21 6 13 4
  • 10 19 5 12 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 9 16 4 10 3
  • 8 15 4 9 3
  • 8 14 4 9 3
  • 11 20 6 12 4
  • 11 20 6 12 4
  • 11 21 6 13 4
  • 12 23 6 14 4
  • 11 21 6 13 4
  • 11 21 6 13 4
  • 12 22 6 14 4
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  • 13 24 7 15 4
  • 16 30 8 19 5
  • 17 31 9 19 5
  • 17 32 9 20 5
  • 21 38 11 24 5
  • 22 40 11 25 6
  • 23 43 12 27 6
  • 24 44 12 27 6
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  • 23 42 12 26 6
  • 19 36 10 22 5
  • 20 37 10 23 5
  • 21 38 11 24 5
  • 17 31 9 19 5
  • 16 29 8 18 5
  • 14 26 7 16 4
  • 1
  • 1
  • 1
  • 0.9
  • 0.9
  • 0.8
  • 0.8
  • 0.8
  • 0.8
  • 0.8
  • 0.8
  • 0.8
  • 0.8
  • 0.8
  • 0.9
  • 0.9
  • 1
  • 1
  • 1.1
  • 1.2
  • 1.3
  • 1.3
  • 1.3
  • 1.3
  • 0.8
  • 0.8
  • 0.8
  • 0.7
  • 0.5
  • 0.4
  • 0.4
  • 0.4
  • 0.4
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  • 0.5
  • 0.5
  • 0.6
  • 0.6
  • 0.7
  • 0.8
  • 0.9
  • 0.9
  • 1
  • 1.1
  • 1.2
  • 1.2
  • 1.2
  • 1.2
  • 295° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 300° NW WNW
  • 310° NW NW
  • 315° NW NW
  • 310° NW NW
  • 300° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 300° NW WNW
  • 305° NW WNW
  • 300° NW WNW
  • 300° NW WNW
  • 300° NW WNW
  • 300° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 295° NW WNW
  • 0.5
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  • 0.4
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  • 0.3
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  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 8
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  • 25
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  • 25
  • 25
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  • 10.2
  • 9.1
  • 7.5
  • 5.8
  • 4.3
  • 3.4
  • 3.2
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  • 5.8
  • 7.8
  • 9.4
  • 10.2
  • 10.0
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  • 7.8
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  • 65
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  • 55
  • 0
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  • 0
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  • 0
  • 0
  • 0
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  • 0
  • 0
  • 0
  • 0.1
  • 0.1
  • 0.6
  • 0.6
  • 0.6
  • 0.2
  • 0
  • 0
  • 0
  • 0
  • -
  • -
  • -
  • -
  • -
  • -
  • -
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  • 20
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  • 35
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  • 55
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  • 75
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  • 0
  • 0
  • 10
  • 5
  • 5
  • 2
  • 2
  • 1
  • 2
  • 2
  • 5
  • 10
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • 15
  • 5
  • 1021
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  • 1019
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  • 0
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  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
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  • 1
  • 1
  • 0
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  • 13 56
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  • 12 54
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  • 15 59
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  • 13 55
  • 12 53
  • 11 52
Forecasts established in local time
Caption   Glossary

Expert opinion

For Mouillage de Saint-Cast :
No gale warning.

The reliability of the situation is poor.
For the night from Wednesday to Thursday W force 2 in the early part of the night turning SW. Gusts reaching 12 knots in the middle of the night.

Slight sea. Low, fairly long swell from WNW. Good visibility becoming reduced by mist in the middle of the night. Daytime of Thursday 17 september : The day will be unsettled and very humid.

Sun but cloud increasing in the morning, overcast skies in the afternoon. Risk of some spots of rain in the morning, drizzle followed by showers in the afternoon. In the evening, clear periods developing.
Light showers progressively becoming less frequent. SW force 3 becoming WSW force 4 in the middle of the day then W force 3. Gusts reaching 24 knots in the middle of the day. Slight sea. Low, short swell from NW. Visibility reduced by mist becoming excellent in the middle of the day then poor.

semaphore stations

Station Dinard located 14 km from Mouillage de Saint-Cast
WIND
WEATHER
Local time Dir.
(°)
Speed
(nd)
Gust
(nd)
Temp.
(°C)
Pressure
(hPa)
Visibility
(M)
06h
190
2
5
13.7
1026
4
05h
190
3
4
13.7
1026
1
04h
190
3
5
13.8
1026
6
Nearby signal stations
Météo France - RADOME
Signal station weather

Tides at Saint-Cast

56
Low tide 05h43 3.18m
High tide 11h14 10.24m
49
Low tide 17h58 3.49m
High tide 23h27 9.7m
www.shom.fr - © SHOM 2026 - Local times
Sun
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Sun
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