When you travel with your pet, keeping tabs on the weather can make the trip safe and fun for everyone. The hottest months are usually August and July, with an average temperature of 16°C, while the coldest months are January and February, with an average of -2°C. The snowiest months in Miercurea-Ciuc are April, January, December and November, with each month seeing an average of 16 cm of snowfall.