One of the things to figure out when travelling to a new place is the weather and the atmospheric condition of that place. Bulgaria is a country with hot weather but that does not mean you experience a sunny day everytime. Bulgaria tend to have a hot weather particularly during summer period with temperature over 30°C and at least 9 hours of sunshine per day, the summer starts from June to August.
The climatic condition of Bulgaria varies between the inland and the coast. Areas around black sea beaches experience low rainfall with plenty of sunshine. In the spring and autumn, the atmosphere is cool and that does not mean you will not also experience some degrees of sunshine. The temperature which results to cooler atmosphere is as a result of winter winds from Russia. The winter winds from Russia also result to plenty of snow in the mountain.