Tenedos is roughly triangular in shape.
Its area is 39.9 km² (15 sq mi).
It is the third largest Turkish island after Marmara Island and Imbros (Gökçeada).
It is surrounded by small islets, and is situated close to the entrance of the Dardanelles.
It is the only rural district (ilçe) of Turkey without any villages, and has only one major settlement, the town center.

Geological evidence suggests that the island broke away from the mainland producing a terrain that is mainly plains in the west with hills in the Northeast, and the highest point is 192 metres (630 ft).
The central part of the island is the most amenable to agricultural activities.
There is a small pine forest in the Southwestern part of the island.
 The westernmost part of the island has large sandy areas not suitable for agriculture.

The island has a Mediterranean climate with strong northern winds called etesians.
 Average temperature is 14 °C (57 °F) and average annual precipitation is 529 millimetres (20.8 in).
There are a number of small streams running from north to south at the southwestern part of the island.
Freshwater sources though are not enough for the island so water is piped in from the mainland.
Tenedos is roughly triangular in shape. Its area is 39.9 km² (15 sq mi). It is the third largest Turkish island after Marmara Island and Imbros (Gökçeada). It is surrounded by small islets, and is situated close to the entrance of the Dardanelles. It is the only rural district (ilçe) of Turkey without any villages, and has only one major settlement, the town center.
Geological evidence suggests that the island broke away from the mainland producing a terrain that is mainly plains in the west with hills in the Northeast, and the highest point is 192 metres (630 ft). The central part of the island is the most amenable to agricultural activities. There is a small pine forest in the Southwestern part of the island.  The westernmost part of the island has large sandy areas not suitable for agriculture.
The island has a Mediterranean climate with strong northern winds called etesians.  Average temperature is 14 °C (57 °F) and average annual precipitation is 529 millimetres (20.8 in). There are a number of small streams running from north to south at the southwestern part of the island. Freshwater sources though are not enough for the island so water is piped in from the mainland.
Tenedos