Gender masculine Κέλσιος is a Greek form of Latin name Celcius.Feasts and saints related to given name Κέλσιος Sts Julien, Vassilisse, Celcius et Antoine Feast day January 8 When is Κέλσιος's name day? Κέλσιος's Day is celebrated on January 8 in memory of Sts Julien, Vassilisse. Transcriptions Kelsios(la) Log in or register to post comments Be the first to rate this name Leave this field blank