Safety & Hazards
in Thailand for Expats

A seasonal concern from December to April. Use the IQAir app to monitor levels in real time. In northern Thailand (Chiang Mai and the surrounding provinces), burning season is severe — PM2.5 can reach hazardous levels. Invest in a quality HEPA air purifier for home and an N95 mask for outdoor use during peaks.

Monsoon timing differs significantly between regions: Gulf coast peaks October to December; Andaman coast peaks May to October. Bangkok experiences localised flooding during heavy rains. Use the Thai Meteorological Department app for early warnings. Ground floor apartments in flood-prone areas (Lat Phrao, Bang Khen) require additional consideration.

Thailand has one of the world's highest road fatality rates. Motorcycles account for the majority of deaths. Always wear a full helmet — never just a half-shell. If you are in an accident: stay calm, call 1155 or 1669, photograph the scene immediately, and do not move injured parties unless in immediate danger.

Penalties for drug offences are among the harshest in the world. Despite recent cannabis policy shifts (recreational use is now recriminalised), the landscape remains complex and changes with little warning. MDMA, methamphetamine, and heroin carry mandatory death penalty thresholds. No exceptions for foreigners.

Thailand's heat is dangerous from March to June, with temperatures reaching 38–41°C. Heat exhaustion develops faster than most expect. Stay hydrated throughout the day, limit midday outdoor activity (11am–3pm), and recognise heat stroke symptoms: confusion, no sweating, rapid heart rate. This is a medical emergency.

Tap water is not safe to drink in Thailand. Use filtered or bottled water only. For beach safety: red flags mean no swimming — this is strictly enforced in most resorts and should be treated as absolute. Rip currents cause multiple fatalities annually. If caught in a rip current, swim parallel to shore, not against it.

Street food is generally safe if it is cooked fresh and served hot. Avoid pre-prepared food sitting at room temperature. Your digestive system will take 2–4 weeks to adjust to Thai bacteria even from safe food — loose stools in the first month are normal and not a sign of food poisoning. Carry oral rehydration salts.

Bangkok-specific scams to know: gem scam (a 'friendly local' redirects you to a gem shop), closed attraction scam (major attraction is 'closed today' — it isn't), bar scam (inflated bills in nightlife areas). Keep bags on the body, not on road-facing shoulders on busy streets. Do not carry original documents unnecessarily — keep a certified copy.