Suwałki has a humid continental climate. It
is characterized by cold winters and fairly warm summers. During the winter
nights temperature often falls below −25 °C (−13 °F), but in summer
the temperature increases above 30 °C (86 °F). Snow in Suwałki
remains for the longest period among Polish municipalities, i.e. for more than
100 days. Suwałki is called the "Polish pole of cold" because it has
the lowest average temperature in the whole of Poland, excepting mountain
resorts
