The climate of Bulgaria is temperate continental, with very warm summers, cold winters, and four distinct seasons. Spring and fall are quite comfortable but can bring rainy days. The regions in southern Bulgaria feel a Mediterranean influence, and winters here are milder. Winters are also somewhat warmer along the coast of the Black Sea, although winds blowing down from Russia can chill the area. But during the summer the coast of the Black Sea enjoys more moderate temperatures than inland Bulgaria and pleasant breezes from the coast. Cities along the Danube, like Ruse and Vidin, have hot summers and cold winters; humidity can be quite high.