Lake Baikal is a rift lake in Russia, located in southern Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast. At 620 km long, Lake Baikal has the largest surface area of any freshwater lake which is the deepest lake in the world at 1,742 m.
Baikal water affects the coastal climate. Winter climate is milder here, however, summer is cooler. Spring comes 10-15 days other areas which is located near to the Lake. Autumn is quite long. Maximum recorded air temperature is + 34 degrees Celsius, and average temperature rises in recent years. The Baikal region is distinguished by a large total sunshine duration. For example, the sunshine duration is up to 2524 hours in Bolshoye Goloustnoe. It is more than at the Black Sea resorts. There are only 37 cloudy days in Bolshoye Goloustnoe and 48 cloudy days on the Olkhon Island. Special features of the climate are caused by the Baikal winds which are called Barguzin, Sarma, Verkhovik, Kultuk, etc.