The album was well received by critics upon release. Vanyaland wrote that "Walker is ready and set for the next chapter of her life. Having been signed by LVRN Records accompanied by Interscope Records is enough proof that Walker’s resilience and motivation is paying off. Most who are just tuning into Walker should have came up with the same conclusion — that she isn’t anything less than dope. Last Day Of Summer is a 12-song effort packed with nothing but female truth that for most would seem too provocative."[6] Editor for DJBooth, Donna-Claire Chesman, mentioned that the album "brought it to jazzy life on her latest and most successful body of work" and "skimmed across a vast pool of emotion."[7] Chuck Ramos for Ones To Watch commented on the album saying it "is a collection of songs that showcase the talented vocalist’s ability as a songwriter. Her debut is a transparent display of her thoughts and feelings on confidence, doubt, love and womanhood. Tapping into an array of styles for production, Walker shatters any preconceived ideas about her sound being one dimensional."[8]
