Castle Cornet


Castle Cornet is an island castle in Guernsey, also known as Cornet Rock or Castle Rock. A former tidal island which has been one of the harbour breakwaters of St Peter Port’s since 1859.

The island is approximately two hectares in area (length 175 metres and width130 metres).

The island also has a restaurant, and hosts outdoor theatre performances during the summer months.

The castle has the following museums:

  • The Story of Castle Cornet
  • Maritime Museum
  • 201 Squadron RAF Museum
  • Royal Guernsey Militia Museum


Castle Cornet 7 day weather forecast, weather in Saint Peter Port Town, Saint Peter Port

Expect a temp in the range 8.6℃ to 9.8℃ with wind speed 7.6 m/sec (NNW)
Monday, Nov 29
Expect a temp in the range 7.6℃ to 8.3℃ with wind speed 12.5 m/sec (N)
Tuesday, Nov 30
Expect a temp in the range 12.3℃ to 12.7℃ with wind speed 8.7 m/sec (WNW)
Wednesday, Dec 01
Expect a temp in the range 12.3℃ to 13.2℃ with wind speed 15.8 m/sec (WSW)
Thursday, Dec 02
Expect a temp in the range 7.5℃ to 9.8℃ with wind speed 11.2 m/sec (N)
Friday, Dec 03
Expect a temp in the range 8.2℃ to 10℃ with wind speed 3.9 m/sec (WNW)
Saturday, Dec 04
Expect a temp in the range 10.4℃ to 13.1℃ with wind speed 14.3 m/sec (WSW)

Saint Peter Port Town weather forecast from Yr, delivered by the Norwegian Meteorological Institute and NRK

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