Popsugar Entertainment 13 Reasons Why 13 Reasons Why Season 3 Details Here's Everything We Know About 13 Reasons Why Season 3 23 August 2019 by Kelsie Gibson View On One Page Photo 1 of 7 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 The Premiere Date In the UK is 23 August 2019 The third season hit Netflix in the UK on Aug. 23 and consists of 13 episodes. Previous Next Start Slideshow 13 Reasons WhyTV