Weather diving spot Shag Rock

Wembury GBRLon : -4°6’,4518 W Lat : 50°18’,27 N Alt : 0m
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Weather Risk Briefing
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BULLETIN

Reliability 90%
Monday 21 september Monday 21 sep
METEO CONSULT Run : 21/09 09Z Mesh : 1km Updated, 2h ago Update in 32min

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
10
5
0
15
10
5
0
5
0
10
5
0
5
0
0.5
0
3
0
25
20
15
10
75
70
65
60
55
  • Tue 22
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Run : 21/09 09Z Mesh : 1km Updated, 2h ago Update in 32min
  • Tue 22
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  • 230° SW SW
  • 230° SW SW
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  • 215° SW SW
  • 230° SW SW
  • 285° W WNW
  • 265° W W
  • 330° NW NNW
  • 335° NW NNW
  • 350° N N
  • 360° N N
  • 15° N NNE
  • 20° N NNE
  • 25° NE NNE
  • 0° 0 0
  • 10° N N
  • 35° NE NE
  • 65° NE ENE
  • 85° E E
  • 115° SE ESE
  • 125° SE SE
  • 170° S SSE
  • 185° S S
  • 190° S S
  • 3 6 2 4 2
  • 3 6 2 4 2
  • 3 5 1 3 1
  • 3 5 1 3 1
  • 2 4 1 2 1
  • 2 4 1 2 1
  • 1 1 0 1 1
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  • 6 12 3 7 3
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  • 5 10 3 6 2
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  • 5 10 3 6 2
  • 2 4 1 2 1
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  • 3 6 2 4 2
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  • 5 9 3 6 2
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  • 7 13 4 8 3
  • 8 14 4 9 3
  • 0.3
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  • 235° SW SW
  • 230° SW SW
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  • 230° SW SW
  • 235° SW SW
  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 235° SW SW
  • 235° SW SW
  • 235° SW SW
  • 235° SW SW
  • 235° SW WSW
  • 235° SW SW
  • 235° SW SW
  • 230° SW SW
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  • 230° SW SW
  • 230° SW SW
  • 230° SW SW
  • 235° SW SW
  • 230° SW SW
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  • 230° SW SW
  • 0.3
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  • 4.1
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Forecasts established in local time
Caption   Glossary

Expert opinion

For Shag Rock :
No gale warning.

The reliability of the situation is very good.

Good clear periods but lots of cloud, too. Possibility of showers In the evening, low cloud developing into fog.
Chance of light rain. SW force 2 in the middle of the day turning W force 1 in the evening. Gusts reaching 6 knots in the middle of the day. Smooth sea. Low, short swell from SW. Poor visibility becoming reduced by mist in the evening.

semaphore stations

Station Mountwise located 6 km from Shag Rock
WIND
WEATHER
Local time Dir.
(°)
Speed
(nd)
Gust
(nd)
Temp.
(°C)
Pressure
(hPa)
Visibility
(M)
16h
-
-
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1032
0
12h
-
-
-
-
1034
14
11h
-
-
-
-
1034
14
Nearby signal stations
Réseau observation SYNOP
Signal station weather

Tides at Plymouth

24
High tide 02h03 3.9m
Low tide 08h18 2.74m
29
High tide 14h43 4.09m
Low tide 21h13 2.56m
© METEOCONSULT 2026 - Local times
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