in his review of clapton's debut album, "allmusic" critic stephen thomas erlewine likes that the title "features extended solos". he also notes, that the song consists of a "pop element". fellow critic greenwald recalls the piece as "one of eric clapton's first self-written classics" and goes on to say the song "showcased the influence that delaney bramlett" had on clapton at the time. robert christgau finds in his album review that "let it rain" deserves a "classic status".