What's the weather or temperature during december month from 25th December onwards?

Hello Jimmy, It will have turned very cold in Harbin in late December, temperatures are -15C- -20C, and with possibility of snowfall. Every year from January 5 lasting about a month, Harbin International Snow Festival is held in Harbin. VIsitors can enjoy the snow world, snow sculptures and watch winter swimming and some other winter activities there. Harbin is a great place to travel in winter. More information about Harbin is at this page (http://www.chinahighlights.com/harbin/). If you need tour services in China, feel free to send us your inquiry to service@chinahighlights.com, our travel advisors will be glad to help and reply within 24 hours.