A new and distinct cultivar of Azalea plant named 'YBAZ1885', characterized by its dark green-colored leaves that do not abscise during the cooling and forcing periods; uniform and outwardly spreading plant habit; freely branching habit; uniform and freely flowering habit; relatively rapid flowering response; plants being flowering about 33 days after cooling treatment; large, showy light lavender-colored flowers; semi-double to double flower form; good postproduction longevity with plants maintaining good flower substance for about three to four weeks in an interior environment; and very good resistance to Cylindrocladium in inoculated trials.