In terms of precipitation, rainfall in Bulgaria ranges from 30.0 - 70.0 inches per month. June is typically the wettest month, when rainfall can reach 70.0 mm. January is typically the driest time to visit Bulgaria when rainfall is around 30.0 mm.
If weather is an important factor for your trip to Bulgaria, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).