Since Cambodia has a hot and humid tropical climate, casual and lightweight clothing is a must with clothing made from natural fibres being the best option. A jacket might be needed on cool winter evenings or in hotels and restaurants that use excessive air conditioning.

A hat and high-factor sun block is advisable as protection against the hot sun when sightseeing outdoors and while travelling with on a tour, in addition to comfortable walking shoes.

Although many tourists do wear shorts and sleeveless shirts, please respect the culture and traditions of Cambodia and dress modestly, expecially when visiting temples and religious sites.