May in Thai is พฤษภาคม pronounced préut-sà-paa kom. Like all months (เดือน deuan) in Thai that have 31 days, it ends with คม (kom).
The abbreviated version of พฤษภาคม is พ.ค.
The beginning of พฤษภาคม is พฤษภ (préut) coming from the Taures zodiac sign. The reason for this is that months in Thai all come from zodiac signs.
Labor Day
Like many countries around the world, Thailand celebrates Labor Day วันแรงงานแห่งชาติ (wan raeng ngaan hàeng châat) on May 1st.
Visakha Bucha
วันวิสาขบูชา (wan wí-săa-kà-boo-chaa) is the most important Buddhist holiday. This day commemorates the three major events in Buddha’s life: his birth, enlightenment, and death.
Summary
I hope you learned how to say May in Thai พฤษภาคม préut-sà-paa kom and also learned about holidays during May.