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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Wed
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BULLETIN

Reliability 55%
Thursday 20 august Thursday 20 aug
METEO CONSULT Run : 9/08 12Z Mesh : 19km Updated, 3h ago Update in 3h

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
20
15
10
5
0
30
20
10
0
10
5
0
20
15
10
5
0
5
0
5
0
3
0
35
30
25
20
15
90
80
70
60
  • Thu 20
  • 00h
  • 01h
  • 02h
  • 03h
  • 04h
  • 05h
  • 06h
  • 07h
  • 08h
  • 09h
  • 10h
  • 11h
  • 12h
  • 13h
  • 14h
  • 15h
  • 16h
  • 17h
  • 18h
  • 19h
  • 20h
  • 21h
  • 22h
  • 23h
Run : 9/08 12Z Mesh : 19km Updated, 3h ago Update in 3h
  • Thu 20
  • 00h
  • 01h
  • 02h
  • 03h
  • 04h
  • 05h
  • 06h
  • 07h
  • 08h
  • 09h
  • 10h
  • 11h
  • 12h
  • 13h
  • 14h
  • 15h
  • 16h
  • 17h
  • 18h
  • 19h
  • 20h
  • 21h
  • 22h
  • 23h
  • 10° N N
  • 20° N NNE
  • 20° N NNE
  • 20° N NNE
  • 20° N NNE
  • 20° N NNE
  • 20° N NNE
  • 245° SW WSW
  • 245° SW WSW
  • 245° SW WSW
  • 320° NW NW
  • 320° NW NW
  • 320° NW NW
  • 315° NW NW
  • 315° NW NW
  • 315° NW NW
  • 330° NW NNW
  • 330° NW NNW
  • 330° NW NNW
  • 335° NW NNW
  • 335° NW NNW
  • 335° NW NNW
  • 325° NW NW
  • 325° NW NW
  • 6 11 3 7 2
  • 2 4 1 2 1
  • 2 4 1 2 1
  • 2 4 1 2 1
  • 1 1 0 1 1
  • 1 1 0 1 1
  • 1 1 0 1 1
  • 1 1 0 1 1
  • 1 1 0 1 1
  • 1 1 0 1 1
  • 2 4 1 2 1
  • 2 4 1 2 1
  • 2 4 1 2 1
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 6 12 3 7 3
  • 6 12 3 7 3
  • 6 12 3 7 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 7 13 4 8 3
  • 7 13 4 8 3
  • 11 21 6 13 4
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 8 15 4 9 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 10 19 5 12 3
  • 10 19 5 12 3
  • 10 19 5 12 3
  • 12 23 6 14 4
  • 12 23 6 14 4
  • 12 23 6 14 4
  • 15 27 8 17 4
  • 15 27 8 17 4
  • 15 27 8 17 4
  • 13 25 7 16 4
  • 13 25 7 16 4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.6
  • 0.6
  • 0.6
  • 0.8
  • 0.8
  • 0.8
  • 1
  • 1
  • 1
  • 1.2
  • 1.2
  • 1.2
  • 1.3
  • 1.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.4
  • 0.6
  • 0.6
  • 0.6
  • 0.8
  • 0.8
  • 0.8
  • 1
  • 1
  • 1
  • 1.2
  • 1.2
  • 1.2
  • 1.3
  • 1.3
  • 310° NW NW
  • 305° NW NW
  • 305° NW NW
  • 305° NW NW
  • 310° NW NW
  • 310° NW NW
  • 310° NW NW
  • 0° N N
  • 0° N N
  • 0° N N
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 8
  • 5
  • 5
  • 5
  • 5
  • 5
  • 5
  • 3
  • 3
  • 3
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 110
  • 60
  • 60
  • 60
  • 60
  • 60
  • 60
  • 15
  • 15
  • 15
  • 15
  • 15
  • 15
  • 20
  • 20
  • 20
  • 25
  • 25
  • 25
  • 35
  • 35
  • 35
  • 35
  • 35
  • 9.8
  • 9.6
  • 8.7
  • 7.5
  • 6.1
  • 4.9
  • 4.1
  • 3.8
  • 4.4
  • 5.6
  • 7.1
  • 8.5
  • 9.3
  • 9.3
  • 8.8
  • 7.8
  • 6.6
  • 5.5
  • 4.6
  • 4.2
  • 4.4
  • 5.3
  • 6.5
  • 7.8
  • 22 72
  • 22 72
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  • 30
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  • 30
  • 55
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  • 45
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  • 35
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  • 40
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  • 50
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  • 45
  • 45
  • 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
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 20
  • 20
  • 20
  • 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
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • 1018
  • 1018
  • 1018
  • 1018
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 3
  • 3
  • 3
  • 6
  • 6
  • 6
  • 3
  • 3
  • 3
  • 0
  • 0
  • 0
  • 0
  • 0
  • 20 68
  • 18 64
  • 18 64
  • 18 64
  • 17 63
  • 17 63
  • 17 63
  • 17 63
  • 17 63
  • 17 63
  • 22 72
  • 22 72
  • 22 72
  • 27 81
  • 27 81
  • 27 81
  • 25 77
  • 25 77
  • 25 77
  • 22 72
  • 22 72
  • 22 72
  • 20 68
  • 20 68
  • 21 69
  • 17 62
  • 17 62
  • 17 62
  • 17 63
  • 17 63
  • 17 63
  • 17 63
  • 17 63
  • 17 63
  • 26 79
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  • 30 85
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  • 29 85
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  • 29 85
  • 26 79
  • 26 79
  • 26 79
  • 17 63
  • 17 63
Forecasts established in local time
Caption   Glossary

Expert opinion

For Mouillage de Saint-Cast :
No gale warning.


For the night from Wednesday to Thursday N force 2 in the early part of the night becoming NNE force 1. Gusts reaching 11 knots in the early part of the night.

Smooth to slight sea. Low, fairly long swell from NW. Excellent visibility. Daytime of Thursday 20 august : The sky will remain changeable.

Good clear periods alternating with cloudy spells, rather dense in the morning. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, cloudy spells, sometimes dense.
Chance of light rain. NW force 1 freshening force 3 in the middle of the day then becoming NNW. Gusts reaching 15 knots in the evening. Smooth to slight sea becoming slight in the middle of the day. Low from N. Excellent visibility.

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)
00h
310
9
16
17.7
1018
0
23h
310
12
15
18.1
1018
0
22h
300
7
14
18.4
1017
0
Nearby signal stations
Météo France - RADOME
Signal station weather

Tides at Saint-Cast

49
High tide 00h10 9.78m
Low tide 06h52 3.84m
42
High tide 12h30 9.39m
Low tide 19h13 4.21m
www.shom.fr - © SHOM 2026 - Local times
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