Metro

De Blasio late again at tour of NYC high school

De Blasio arrives late on Tuesday.Paul Martinka

Tardy again!

Mayor Bill de Blasio showed up 20 minutes late for his tour of Brooklyn’s Boys & Girls High School on Tuesday, just days after his embarrassing lateness at the Rockaways St. Patrick’s Parade.

The perpetually late-arriving mayor was supposed to arrive at 10 a.m. at the famed Brooklyn campus but didn’t make it there until 10:20.

De Blasio angered Rockaways residents when he made them wait Saturday for his half-hour-late arrival to their annual parade.