Thailand weather & when to go: May

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May weather top tip

Temperatures in May start to drop from the mercury boiling highs of last month.


May Overview

May sees a welcome drop in temperature throughout the country, although highs of 33-34°C are not unusual, and most (but not all) regions experience a notable rise in rainfall, albeit low and sporadic initially.    

Khao Sok National Park is warm and wet in May, with high levels of humidity. The islands of Koh Chang and Koh Kood are particularly wet during May and there is a high chance of rain on the west coast beaches of Phuket, Khao Lak and Krabi. For guaranteed sunshine, Hua Hin & Cha Am and the east coast beaches of Koh Samui, Khanom and Koh Pha Ngan are the pick of the bunch, with little, if any, rain expected. 

Despite the possibility of rain, May is a great month to visit Thailand as plenty of sunshine is still expected and the visitor numbers are far lower than in previous months. 

Where's the
sun and sand?

sun and sand

Hua Hin, Pranburi, Cha Am, Koh Samui, Koh Pha Ngan, Khanom

Key Festivals & Religious Ceremonies

Coronation Day

Coronation Day

Marking the crowning of King Bhumibol Adulyadej  as King Rama IX on 5th May 1950.

Visakha Puja

Visakha Puja

(May full moon) the holiest of all Buddhist holidays, celebrating the birth, enlightenment and death of the Buddha, which all occurred on the same day. (2017: 10th May)

See Thailand’s weather in other months