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
Tue
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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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Fri
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Sat
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Sun
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Mon
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BULLETIN

Reliability 55%
Tuesday 25 august Tuesday 25 aug
METEO CONSULT Run : 10/08 12Z 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
20
15
10
5
0
30
20
10
0
10
5
0
20
15
10
5
5
0
1
0.5
0
3
0
30
25
20
15
10
80
70
60
50
  • Tue 25
  • 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 : 10/08 12Z Mesh : 19km Updated, 4h ago Update in 2h
  • Tue 25
  • 00h
  • 01h
  • 02h
  • 03h
  • 04h
  • 05h
  • 06h
  • 07h
  • 08h
  • 09h
  • 10h
  • 11h
  • 12h
  • 13h
  • 14h
  • 15h
  • 16h
  • 17h
  • 18h
  • 19h
  • 20h
  • 21h
  • 22h
  • 23h
  • 300° NW WNW
  • 275° W W
  • 275° W W
  • 275° W W
  • 270° W W
  • 270° W W
  • 270° W W
  • 265° W W
  • 265° W W
  • 265° W W
  • 290° W WNW
  • 290° W WNW
  • 290° W WNW
  • 315° NW NW
  • 315° NW NW
  • 315° NW NW
  • 315° NW NW
  • 315° NW NW
  • 315° NW NW
  • 335° NW NNW
  • 335° NW NNW
  • 335° NW NNW
  • 320° NW NW
  • 320° NW NW
  • 5 9 3 6 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 4 8 2 5 2
  • 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
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 6 11 3 7 2
  • 7 13 4 8 3
  • 7 13 4 8 3
  • 7 13 4 8 3
  • 5 9 3 6 2
  • 5 9 3 6 2
  • 12 23 6 14 4
  • 12 23 6 14 4
  • 12 23 6 14 4
  • 12 23 6 14 4
  • 11 20 6 12 4
  • 11 20 6 12 4
  • 11 20 6 12 4
  • 10 18 5 11 3
  • 10 18 5 11 3
  • 10 18 5 11 3
  • 10 18 5 11 3
  • 10 18 5 11 3
  • 10 18 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 28 8 17 4
  • 15 28 8 17 4
  • 15 28 8 17 4
  • 14 26 7 16 4
  • 14 26 7 16 4
  • 0.5
  • 0.4
  • 0.4
  • 0.4
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.5
  • 0.3
  • 0.3
  • 0.3
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.2
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0.3
  • 0° 0 0
  • 305° NW WNW
  • 305° NW WNW
  • 305° NW WNW
  • 330° NW NNW
  • 330° NW NNW
  • 330° NW NNW
  • 360° N N
  • 360° N N
  • 360° N N
  • 0° 0 0
  • 0° 0 0
  • 0° 0 0
  • 0.2
  • 0.3
  • 0.3
  • 0.3
  • 0.2
  • 0.2
  • 0.2
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 9
  • 9
  • 9
  • 7
  • 7
  • 7
  • 6
  • 6
  • 6
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 20
  • 25
  • 25
  • 25
  • 80
  • 80
  • 80
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 130
  • 4.1
  • 4.1
  • 4.8
  • 6.0
  • 7.4
  • 8.6
  • 9.2
  • 9.2
  • 8.5
  • 7.4
  • 6.1
  • 5.0
  • 4.1
  • 3.9
  • 4.3
  • 5.5
  • 7.2
  • 8.7
  • 9.7
  • 9.8
  • 9.3
  • 8.1
  • 6.6
  • 5.0
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 22 71
  • 65
  • 65
  • 65
  • 65
  • 60
  • 60
  • 60
  • 55
  • 55
  • 55
  • 55
  • 55
  • 55
  • 50
  • 50
  • 50
  • 55
  • 55
  • 55
  • 35
  • 35
  • 35
  • 55
  • 55
  • 0.1
  • 0.1
  • 0.1
  • 0.1
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • -
  • -
  • -
  • -
  • -
  • -
  • -
  • -
  • -
  • 50
  • 50
  • 50
  • 50
  • 30
  • 30
  • 30
  • 0
  • 0
  • 0
  • 20
  • 20
  • 20
  • 0
  • 0
  • 0
  • 20
  • 20
  • 20
  • 0
  • 0
  • 0
  • 25
  • 25
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 15
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • 5
  • 5
  • 5
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • >20
  • 1015
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1016
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1017
  • 1018
  • 1018
  • 1018
  • 1018
  • 1018
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 3
  • 3
  • 3
  • 6
  • 6
  • 6
  • 4
  • 4
  • 4
  • 0
  • 0
  • 0
  • 0
  • 0
  • 18 64
  • 16 60
  • 16 60
  • 16 60
  • 15 58
  • 15 58
  • 15 58
  • 14 58
  • 14 58
  • 14 58
  • 19 65
  • 19 65
  • 19 65
  • 23 73
  • 23 73
  • 23 73
  • 21 70
  • 21 70
  • 21 70
  • 20 67
  • 20 67
  • 20 67
  • 17 63
  • 17 63
  • 16 61
  • 14 57
  • 14 57
  • 14 57
  • 13 56
  • 13 56
  • 13 56
  • 13 55
  • 13 55
  • 13 55
  • 19 66
  • 19 66
  • 19 66
  • 24 76
  • 24 76
  • 24 76
  • 25 78
  • 25 78
  • 25 78
  • 22 71
  • 22 71
  • 22 71
  • 16 60
  • 16 60
Forecasts established in local time
Caption   Glossary

Expert opinion

For Mouillage de Saint-Cast :
No gale warning.


For the night from Monday to Tuesday WNW wind force 2 continuing all night. Gusts reaching 12 knots until the middle of the night.

Smooth to slight sea. Low from N then fairly long from WNW in the middle of the night then, short swell from NNW. Good visibility becoming poor in the middle of the night then reduced by mist. Daytime of Tuesday 25 august : Warning:reduced visibility early in the day.

Sunny spells with possibility of mist forming in the morning, cloudy spells, sometimes dense, in the afternoon. Risk of showers in the morning, possibility of a few spots in the afternoon. In the evening, cloudy spells, sometimes dense.
Chance of light rain. W force 2 turning NW force 3 in the middle of the day then NNW. Gusts reaching 15 knots in the evening. Smooth to slight sea becoming smooth in the middle of the day. Low, short swell from NNW then from N in the middle of the day. Visibility reduced by mist becoming excellent in the middle of the day.

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)
01h
40
10
14
18.5
1021
10
00h
0
7
11
17.4
1021
11
23h
340
8
12
17.9
1021
12
Nearby signal stations
Météo France - RADOME
Signal station weather

Tides at Saint-Cast

51
Low tide 00h31 4m
High tide 06h21 9.29m
57
Low tide 12h58 3.85m
High tide 18h41 9.88m
www.shom.fr - © SHOM 2026 - Local times
Tue
11
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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
16
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Mon
17
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Tue
18
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Wed
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Thu
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Fri
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Sat
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Mon
24
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Tue
25
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