The areas along the coast of Turkey have a temperate Mediterranean climate, which means the summers are dry and hot and the winters are cold and wet. As you go inland the climate can be extreme. The interior of Turkey has a continental climate which means there are distinct seasons. Winters can be severe with temperatures dropping to -40º F and the snow may stay on the ground for four months. In the western part of the country winter temperatures are usually around 34º F and the summers are hot with temperatures in the high 80s to low 90s. About 15 inches of rain falls a year, but the driest areas are in Konya and the Malatya plains. May is the rainiest month and July and August are the driest.
Turkey Weather (Climate), Turkey Travel Guide and Online Tourist Information