The most common Korean word for “may” is 오월 (owol). 「may」는 한국어로 오월.
Learn 오월 free — flashcards, audio and review →「오월」 단어장으로 무료로 외우기Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato