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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Tue
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Wed
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Thu
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Fri
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BULLETIN

Reliability 55%
Friday 21 august Friday 21 aug
METEO CONSULT Run : 14/08 00Z Mesh : 19km Updated, 2h ago Update in 4h

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
15
10
5
0
30
20
10
0
10
5
0
20
15
10
5
0
5
0
1.5
1
0.5
3
0
30
25
20
15
10
80
70
60
50
  • Fri 21
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Run : 14/08 00Z Mesh : 19km Updated, 2h ago Update in 4h
  • Fri 21
  • 00h
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  • 340° N NNW
  • 345° N NNW
  • 345° N NNW
  • 345° N NNW
  • 350° N N
  • 355° N N
  • 355° N N
  • 355° N N
  • 360° N N
  • 10° N NNE
  • 20° N NNE
  • 25° NE NNE
  • 15° N NNE
  • 10° N N
  • 5° N N
  • 5° N N
  • 0° N N
  • 0° N N
  • 5° N N
  • 10° N N
  • 10° N N
  • 15° N NNE
  • 15° N NNE
  • 25° NE NNE
  • 6 11 3 7 2
  • 5 10 3 6 2
  • 5 10 3 6 2
  • 5 9 3 6 2
  • 4 8 2 5 2
  • 4 7 2 4 2
  • 3 6 2 4 2
  • 3 5 1 3 1
  • 2 4 1 2 1
  • 3 5 1 3 1
  • 4 7 2 4 2
  • 4 8 2 5 2
  • 5 10 3 6 2
  • 6 12 3 7 3
  • 7 13 4 8 3
  • 8 15 4 9 3
  • 9 16 4 10 3
  • 9 17 5 11 3
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  • 9 16 4 10 3
  • 8 15 4 9 3
  • 6 12 3 7 3
  • 5 9 3 6 2
  • 3 6 2 4 2
  • 13 25 7 16 4
  • 12 23 6 14 4
  • 12 22 6 14 4
  • 11 20 6 12 4
  • 10 19 5 12 3
  • 9 17 5 11 3
  • 9 17 5 11 3
  • 9 16 4 10 3
  • 9 16 4 10 3
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  • 9 17 5 11 3
  • 10 18 5 11 3
  • 10 18 5 11 3
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  • 10 19 5 12 3
  • 11 20 6 12 4
  • 12 22 6 14 4
  • 13 24 7 15 4
  • 14 26 7 16 4
  • 13 24 7 15 4
  • 12 23 6 14 4
  • 12 22 6 14 4
  • 0.9
  • 0.9
  • 0.9
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  • 0.9
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  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 0.9
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  • 0.5
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  • 0.6
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  • 0.6
  • 0.6
  • 0.5
  • 0.5
  • 0.4
  • 300° NW WNW
  • 300° NW WNW
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  • 295° NW WNW
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  • 300° NW WNW
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  • 300° NW WNW
  • 300° NW WNW
  • 0.6
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  • 0.7
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  • 4
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  • 8.6
  • 8.9
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  • 5.1
  • 4.7
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  • 22 71
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  • 15
  • 15
  • 15
  • 10
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  • >20
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  • 1018
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  • 15 58
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  • 22 71
  • 20 68
  • 19 65
  • 17 62
  • 15 59
  • 13 56
Forecasts established in local time
Caption   Glossary

Expert opinion

For Mouillage de Saint-Cast :
No gale warning.


For the night from Thursday to Friday NNW wind force 2 continuing all night. Gusts reaching 13 knots in the early part of the night.

Slight sea. Low, short swell from WNW. Good visibility becoming good in the middle of the night then good. Daytime of Friday 21 august : The weather will become more uncertain during the day.

Good clear periods alternating with cloudy spells, rather dense in the morning. The risk of seeing rain will remain low. In the evening, lots of good clear periods.
No precipitation. N force 2 in the morning becoming force 3 in the middle of the day. Gusts reaching 14 knots in the evening. Slight sea. Low, short swell from WNW. Good visibility 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)
11h
310
22
29
20.5
1020
14
10h
310
23
31
20.9
1020
9
09h
300
21
29
19.5
1019
8
Nearby signal stations
Météo France - RADOME
Signal station weather

Tides at Saint-Cast

36
High tide 00h48 8.88m
Low tide 07h29 4.62m
30
High tide 13h18 8.61m
Low tide 20h07 4.92m
www.shom.fr - © SHOM 2026 - Local times
Fri
14
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Sat
15
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Sun
16
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Fri
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22
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Thu
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Fri
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