Thais are famously warm and forgiving with visitors, but a little cultural awareness goes a long way — and earns a lot of goodwill. Here are the essentials.
The big ones
Respect the monarchy. It’s deeply important and legally protected; never joke about or criticise it. Keep your cool — public anger and raised voices lose face for everyone; a smile and patience are the way. Heads and feet matter: the head is considered sacred (don’t touch it, even a child’s), and feet are the opposite (don’t point them at people or Buddha images, and don’t step over someone).
Temples and dress
At temples, cover shoulders and knees, remove your shoes where indicated, and lower your voice. Around town, casual is fine, but keep beachwear at the beach.
Small things that help
Return a wai politely (especially to older people), learn a couple of Thai words (sawasdee, khop khun), and don’t haggle aggressively or disrespectfully — a smile gets you further than a hard bargain. None of this is hard, and all of it makes your trip smoother.
Frequently asked questions
What should you not do in Thailand?
Avoid disrespecting the monarchy (it's taken very seriously and is legally protected), touching people's heads, pointing your feet at people or Buddha images, and losing your temper in public. A calm, smiling approach is the cultural norm.
Do I need to dress modestly in Thailand?
For temples, yes — cover shoulders and knees. On the beach and in tourist areas, casual dress is fine, but beachwear belongs at the beach, not in shops, temples or restaurants.