Climate

The enormous size of Russia and the remoteness of many areas from the sea result in the dominance of the humid continental climate, which is prevalent in all parts of the country except for the tundra and the extreme southeast. Mountains in the south obstruct the flow of warm air masses from the Indian Ocean, while the plain of the west and north makes the country open to Arctic and Atlantic influences.

Throughout much of the territory there are only two distinct seasons—winter and summer; spring and autumn are usually brief periods of change between extremely low temperatures and extremely high. The coldest month is January (February on the coastline), the warmest usually is July. Great ranges of temperature are typical. In winter, temperatures get colder both from south to north and from west to east. Summers can be quite hot, even in Siberia. The continental interiors are the driest areas.