The first parts of the 7.2-kilometre maintained ice surface opened on Jan. 10 this year. The entire length is currently open to skaters.
The National Capital Commission said the consistently cold weather coupled with few heavy snowstorms this winter have allowed the canal to stay open. But the bitter cold temperatures and many frostbite warnings have also discouraged skaters.
Last year, the canal had an average of 20,000 visitors per day; this year, the average so far is 17,000, the NCC said.
Last season, the Rideau Canal was open for 58 skating days, between Dec. 31, 2013, and March 11, 2014.
The previous record of 46 consecutive skating days was during the 2003-04 season.