Cres, with the neighboring island of Krk is the largest (405.78 sq km), after island of Hvar, and the longest Croatian island. It is 66 km long, and the widest part is the 12 km wide. The island extends in a north-south. Administrative belongs to Primorje-Gorski Kotar County.
Its northern end of the Kvarner Gulf. West and northwest of it is the peninsula of Istria, and in the east and northeast of the island of Krk. Cres was once in history connected with the island Lošinj, later channel has been dug and the islands are separated.
The highest peak on the island are Gorica, high 648 m.
The island has a freshwater lake (crypto) which is the main source of drinking water for the entire archipelago.
In the northern part of the island of Cres is Sub-Mediterranean climate, and in the central and southern part of the prevalent Mediterranean climate. It is moderately warm rainy climate type with warm and dry summers and rainy autumns. Because of the large heat capacity can not influence the climate by alleviates temperature difference – lowering the highest and lowest increases. In summer, the sea cools and in winter warms the land.