Climate
The Czech Republic is located in the temperate zone and has four distinct seasons. The winters are moderately cold, the summers warm.
The best time to visit the Czech Republic is from May to September, when the weather is warm and all sights (castles, museums, sports and recreational facilities) are open. In spring (end of March to May) and in autumn (September to November) the weather is very changeable, usually cooler and rainy. In winter (December to March) you will probably find everything covered in snow, which is very appealing. And it's the right time for skiing or the other indoor activities!
Temperatures
Summer brings warm weather with some storms. Some days are hot (25°C up to 39°C), few days colder and rainy. Autumn and spring are very changeable but it can be as high as 20°C in September or early May. In winter temperatures may reach as low as –5°C to –25°C, the winter average is roughly –2°C. The average year temperature is between 5,5°C – 9°C.