Practical Information for visiting Isaan - Northeast Thailand

Coverage for mobile networks is good across the provincial cities and along the main roads from AIS, TrueMove and dtac, with 4G nearly everywhere and 5G in the larger cities. Rural stretches of the plateau and the Mekong road have weaker signal but are rarely without any.

Tourist SIMs are cheap and sold at the airports and convenience stores.

Wi-Fi is standard in hotels and cafes in the cities, and Khon Kaen and Udon Thani have a growing cafe culture with reliable connections. Village guesthouses may have little or none.

Power is reliable. Download offline maps before driving the temple circuits, where signage in English is limited and some sites are well off the main road.

Isaan is one of the safest and most relaxed parts of Thailand, and crime against visitors is very rare. The hazards are practical.

• Road travel is the main risk. Roads are good and empty, which encourages speed; pickup trucks carrying passengers in the bed, motorbikes without lights and livestock on rural roads are all common. Avoid driving at night.
• Heat in March to May is genuinely dangerous at midday, and the temple sites have no shade.
• The Cambodian border: the area around Preah Vihear has been militarily disputed and there is residual landmine contamination along parts of the Dangrek escarpment. Stay on marked paths and official crossings.
• Rabies: village dogs are numerous and not all vaccinated.
• Raw or fermented fish dishes carry a genuine liver-fluke risk — see health.
• Flash flooding during the monsoon on hard-baked ground.

Provincial hospitals in Khon Kaen, Udon Thani and Ubon Ratchathani are reasonable, and Khon Kaen’s university hospital is a major regional referral centre. Private hospitals in the larger cities handle foreign patients. Anything highly specialised means Bangkok.

Liver fluke is the region’s distinctive health issue and worth knowing about. Opisthorchis viverrini, contracted from raw or undercooked freshwater fish, is endemic across the plateau and is linked to unusually high rates of bile-duct cancer — among the highest in the world. Avoid koi pla and other raw fish dishes; fermented pla ra used as a cooked seasoning is a different matter.

Vaccinations: routine cover plus hepatitis A and typhoid; Japanese encephalitis is worth considering for rural stays, as it is transmitted around rice fields and pigs, and rabies for anyone spending time in villages.

Dengue occurs, with a day-biting mosquito.

Heat in the hot season is the most likely problem.

Water: drink bottled or filtered.

The monarchy. Lese-majeste law carries long prison sentences and applies to foreigners and to online posts. Do not discuss the royal family.

Politics. Isaan’s political history is strongly felt. People may raise it; a visitor is better off listening than offering opinions.

Temples and Khmer sites: shoulders and knees covered, shoes off in the prayer halls, and do not climb on the stonework at the ruins even where nothing stops you.

Head and feet: do not touch heads, do not point with feet or step over food, people or the sticky rice basket.

Sticky rice is eaten with the right hand; take from the communal basket with clean fingers.

Hospitality is pressed hard here, including alcohol. A polite refusal is accepted but you may have to repeat it warmly.

Photography: ask before photographing people, especially at religious events.

Emergency numbers: 191 for police, 1669 for ambulance, 199 for fire, and the Tourist Police on 1155, which is English-speaking — particularly useful here, where local police may have none.

Medical. Srinagarind Hospital in Khon Kaen is the major referral centre for the region and is well regarded. Private hospitals in Udon Thani, Khon Kaen and Ubon Ratchathani handle foreign patients and bill against insurance or card.

Road accidents are the most likely serious incident; confirm your insurance covers you to drive, and note that ambulance response on rural roads can be slow.

Crossing to Laos: keep your passport and any visa paperwork accessible, and be aware that consular help on the far side is a separate matter.

Near the Cambodian border, stay on marked paths and use official crossings only.

Embassies are in Bangkok; there is a US consulate in Chiang Mai but none in Isaan.