Winter in Mariánské Lázně is overcast and cloudy, but rather mild. The temperature of the air during the day falls slightly below 0. In December, as a rule, it is -3-2, at night it only chills by a degree-two. This resort is generally characterized by a slight difference between day and night temperatures.

The coldest winter month is January. During the whole month during the day, usually around -6-4, at night about the same. Although the temperature drops to -10 or more, or thaw, up to + 2-4. December and January are the snowiest months of the winter here. During the temperature rise, it's raining.

In February, it starts to warm up, and although there is still a minus at night (sometimes reaching -5 and below), in the daytime it's usually 0-1. Often the most real thaws with a plus temperature, during which almost completely melts a thin layer of snow. But in the second half of the month, they return -4-2. Frequent and more serious frosts, but they do not last long.