The Polish climate is moderately continental, with relatively cold winters (from December to March) and a hot summer, which extends from June to August. January average temperatures -5°C (23°F) to – 1°C (30°F). July and August average temperatures range from 16.5°C (62°F) to 19°C (65°F), although on some days the temperature can reach 35°C (95°F).
The weather tends to change and be unpredictable.
You can count on many sunny days and many rainy days and don’t be surprised when the summer turns out to be quite hot or quite rainy. Winters are usually cold, with temperatures well below freezing, and more or less snowy. If you come from a warmer climate, make sure you have proper clothing.