The 'Californication' group last year announced a year-long hiatus but have now decided to extend it by a further six months.
Speaking to Q magazine, drummer Chad Smith said: "We're not playing right now, but we played a lot before. It was time to take a little break and live your life."
Smith is currently recording with new 'supergroup' Chickenfoot, made up of Joe Satriani and Van Halen's Sammy Hagar and Michael Anthony.
The four-piece, who release their self-titled LP on June 8, will perform at the O2 Shepherd's Bush Empire on June 25 and at a number of summer festivals.
Meanwhile, Chili Peppers bassist Flea has signed up to study music at a California university.