Chiang Mai

Is Chiang Mai safe?

Yes, for most visitors, and in some ways it is easier than Bangkok. Crime against tourists is uncommon, scams are mild, and the old city feels relaxed after dark. Chiang Mai's real risks are seasonal. In spring the smoke from burning fields and forests can make its air among the worst in the world, and in late rainy season the Ping River floods. All year round, rented motorbikes on hill roads hurt more visitors than anything else.

We score Chiang Mai 65, one point below Bangkok and above Phuket (62). Our Thailand page covers the rest of the country.

The burning season

From about February to April, farmers clear fields by burning and forest fires spread through the hills of northern Thailand and neighbouring Myanmar. Smoke settles in Chiang Mai's valley and stays there. In 2026 the city was at or near the top of IQAir's global ranking in late March and early April. On 31 March the province declared wildfire disaster zones in Samoeng and Hot districts, and on 2 April IQAir gave Chiang Mai an AQI of 231, the second worst of any city in the world that morning. On 4 April Thai PBS reported 3,285 fire hotspots across 17 northern provinces, and PM2.5PM2.5Tiny airborne particles 2.5 micrometres across or smaller. They reach deep into the lungs and are the air pollutant most linked to early death.More in the glossary in Pai, three hours away, reached 318 µg/m³.

The FCDOFCDO travel adviceThe UK government's travel advice for each country, which can advise against all travel or all but essential travel to specific areas.More in the glossary warns that the haze in Chiang Mai can reach dangerous levels and worsen breathing problems. On bad days your eyes sting, mountain views vanish and outdoor exercise is a poor idea.

What to do about it:

• If you have asthma, heart or lung disease, or are travelling with small children or while pregnant, avoid March and early April.
• At other times in the season, check IQAir or Air4Thai each morning and wear an N95 mask outside.
• Choose a room with an air purifier and keep windows closed.
• The air is usually clean from November to January, which is also the coolest and most pleasant time to visit.

Motorbikes and mountain roads

Thailand has some of the deadliest roads in the world. WHO estimatesWHO road-death estimateThe World Health Organization's estimate of road traffic deaths per 100,000 people in a country, adjusted for deaths that police statistics miss.More in the glossary 21.9 road deaths per 100,000 people in 2023, and most of the dead were on motorbikes. Chiang Mai publishes no city rate, but it is where many visitors first rent a scooter: up the winding road to Doi Suthep, around the Samoeng loop or on the long, bend-filled road to Pai. Rain, gravel on corners and steep descents catch out inexperienced riders.

The FCDOFCDO travel adviceThe UK government's travel advice for each country, which can advise against all travel or all but essential travel to specific areas.More in the glossary warns that bikes rented in tourist areas are often unregistered, that riding without the right licence can void your travel insurance, and that you should never leave your passport as a deposit. If you have not ridden a motorbike at home, do not learn here. Red songthaews (shared pick-up taxis), Grab and Bolt cover the city cheaply, and a car with a driver for a day trip to Doi Inthanon or Chiang Rai does not cost much more.

In town, the roads around the old city moat are one-way and fast. Cross at lights where you can.

Crime and scams

Chiang Mai has less of the street hustle found in Bangkok's old town or Patong. The common problems are small:

• Songthaew and tuk-tuk drivers who quote high fares. Agree the price before you get in, or use an app.
• Scooter rental shops that claim damage you did not cause. Photograph the bike, with the owner, before you leave.
• Bag snatching from motorbikes, which the FCDOFCDO travel adviceThe UK government's travel advice for each country, which can advise against all travel or all but essential travel to specific areas.More in the glossary warns of across Thailand. Carry your bag on the side away from the road.
• Theft from bags on overnight buses and trains from Bangkok. Keep valuables on you.

Gallup's 2025 survey found 70% of people in Thailand feel safe walking alone at night, well below Vietnam's 88%, the basis of our Hanoi score. In Chiang Mai the old city, Nimmanhaemin and the Night Bazaar area are busy in the evening and street crime there is uncommon. The FCDO warns of drink spiking in Thailand, and bars along the moat and in Loi Kroh Road are where to be careful.

Floods, heat and earthquakes

The Ping River runs along the east side of the city centre. On the night of 5 October 2024, after weeks of heavy rain that followed Typhoon Yagi, it reached about 5.3 metres, its highest level in 50 years. Water filled the Night Bazaar and the central train station, three people died in Chiang Mai, and two elephants drowned at a sanctuary north of the city. It was the city's second flood in six weeks. If you visit from August to October, stay away from riverside hotels after heavy rain and check road conditions before driving into the hills, where landslides happen.

April and May are very hot, often above 40°C, which is hard on older travellers and anyone trekking. The FCDOFCDO travel adviceThe UK government's travel advice for each country, which can advise against all travel or all but essential travel to specific areas.More in the glossary says earthquakes are a risk in northern Thailand. Big quakes near the city are rare, but the March 2025 earthquake in Myanmar was felt across the north.

Hospitals and health

Chiang Mai has some of the best private hospitals outside Bangkok, and many expatriates live here partly for that reason. The FCDOFCDO travel adviceThe UK government's travel advice for each country, which can advise against all travel or all but essential travel to specific areas.More in the glossary says hospitals in Thailand require a guarantee of payment, so carry your insurance details. Dengue is present, especially in the rainy season, and rabies is present in dogs. Do not drink tap water. Malaria occurs in forested border areas, which matters only if you trek far into the hills.

How we scored it

Traffic safety (32) is Chiang Mai's weakest factor, based on Thailand's national road death rate and the scooter habit on mountain roads. Health and environment (55) reflects the spring smoke haze, which in its worst weeks is far above Bangkok's levels, offset by good hospitals. Violent crime (80), night safety (78) and theft and scams (70) are the strongest factors and better than Bangkok's on scams.