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Sornfelli is a mountain plateau on the island of Streymoy

Streymoy

Streymoy is the largest and most populated island of the Faroe Islands. The capital, Tórshavn is located there. The name means "island of currents".- Geography :...

 in the Faroe Islands

Faroe Islands

The Faroe Islands are an island group situated between the Norwegian Sea and the North Atlantic Ocean, approximately halfway between Scotland and Iceland. The Faroe Islands are a self-governing territory within the Kingdom of Denmark, along with Denmark proper and Greenland...

 about 12 km from the capital Torshavn

Tórshavn

Tórshavn is the capital and largest town of the Faroe Islands. It is located in the southern part on the east coast of Streymoy. To the north west of the town lies the high mountain Húsareyn, and to the southwest, the high Kirkjubøreyn...

 (20 km by road). It is the site of a military station at 725 m asl. The Sornfelli Meteorological Station installed in 1999 is located in the middle of the 40000 m2 Sornfelli Mountain top plateau at 725 m asl.,

Temperatures at the meteorological station in 2000 were:

• Mean annual air temperature: +1.7°C
• Mean coldest month (April): -2.2°C
• Mean warmest month (August): 6.5°C

From Tórshavn

Tórshavn

Tórshavn is the capital and largest town of the Faroe Islands. It is located in the southern part on the east coast of Streymoy. To the north west of the town lies the high mountain Húsareyn, and to the southwest, the high Kirkjubøreyn...

you can drive over the mountain road "Oyggjarvegin" to the Sornfelli Mountain plateau. There is a public road up to the Sornfelli Mountain plateau, but not the last 200 m to the radar base.
The mountain Sornfelli has a height of 749 m.