Weather is probably a major factor when you plan your trip to Miercurea-Ciuc, but bear in mind that cheaper options are usually available when the weather isn't as good. 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.