As usual in the temperate zone climate, a clear seasonal rhythm characterizes the climate of Estonia. The warmest month is July while the coldest month is February. The highest temperature measured in Estonia is +35 ºC and the lowest –43 ºC. The ice covers inland water bodies usually in December and melts during April. The formation of marine ice cover is to a great extent determined by the wind velocity and the depth of sea. The maritime location makes the climate of coastal areas of Estonia milder in comparison with inland areas where climatic contrasts are more apparent.