March - July is the best time to visit Central Europe
During this time the weather is agreeable. In the initial months the crowd is lighter. There are many activities you can enjoy and the scenery is beautiful.
Winters in Central Europe are very cold and some places will experience snow as well. Although, air fares and hotel prices are lower and crowds are light. The scenery is beautiful and there are many Christmas markets tourists can enjoy. However, some attractions may be closed due to the weather.
The weather varies during this time. You might get some snowfall but eventually the temperatures will be pleasantly warm. There will also be some rain during these months. It is not too crowded in the first month but the crowds increase with time. There is a lot of greenery around and the flowers are in bloom. There are penty of activities to do and places to see.
The weather is warm and sunny but it rains sometimes. The days are longer so there's more time to explore. Although, the airfares are high and places are more crowded. However, there are many festivals to enjoy during this time.
The weather is cool during this time. The scenary is breathtaking with the trees changing colour. Crowds are lighter. Although, hotel prices are still a bit high.