Thailand Essential Travel Information

ENTRY/EXIT REQUIREMENTS

U.S. citizen tourists entering Thailand for fewer than 60 days do not require a visa. We strongly recommend that your passport be valid for at least 6 months beyond your arrival in Thailand to avoid possible denial of entry.

Starting May 1, 2025, all foreign travelers entering Thailand must complete the Thailand Digital Arrival Card (TDAC) online within 3 days before arrival. This new digital system replaces the TM6 paper form, streamlining the entry process at immigration checkpoints.

Ensure your passport contains at least two blank pages for entry and exit stamps. Do not overstay the permitted duration of your visit, as doing so may result in fines, detention, or denial of future entry.

For the latest information on entry requirements and travel advisories, visit the U.S. Department of State website.

 

Important Note: Each traveler is responsible for obtaining and carrying all required travel documents, including e-tickets, hotel confirmations, and travel vouchers. If you are not a U.S. citizen, entry requirements may differ—please consult the nearest Thai embassy or consulate for country-specific guidelines.

 

 

ARRIVAL INFORMATION

Please refer to the instructions given in your itinerary confirmation.

Country Information

Capital: Bangkok

Population: 69,648,117 (2022 est.)

Location: South East Asia

Religion: Buddhism (mainly Theravada), Islam in the south

System of Government: Constitutional Monarchy

Map of Thailand

Time Zone

Thailand operates on Greenwich Mean Time (GMT), plus 7 hours.

 

At 9:00 am anywhere in Thailand, it is:

  • 9:00 pm the previous day in New York- Eastern Standard Time (EST).
  • 8:00 pm the previous day in Chicago- Central Standard Time (CST).
  • 6:00 pm the previous day in San Francisco- Pacific Standard Time (PST).
  • 4:00 pm the previous day in Hawaii- Hawaii Aleutian Standard Time (HAST).

 

*Note: Add one hour to local time during Daylight Savings Time.

PRACTICAL INFORMATION

The Centers for Disease Control (CDC) website is a good source of health information for travelers.

 

You should be up to date on routine vaccinations while traveling to any destination. Sightseeing may require, at minimum, the ability to walk at a moderate pace for a mile or two and the balance and agility necessary to climb stairs, enter and exit buses and boats, and navigate uneven or cobble-stoned streets. Some sightseeing stops do not have elevators or wheelchair access. Bring medications in their original, clearly labeled containers. A signed and dated letter from your physician describing your med­ical conditions and medications, including generic names, is also a good idea. If carrying syringes or needles, have a physician’s letter documenting their medical necessity. When on vacation, it is always wise to watch what you eat and drink and avoid drinking tap water while traveling. Most hotels will provide complimentary bottled water. You can purchase additional bottled water throughout your trip.

The basic unit of Thai currency is the baht. There is 100 satang in one baht; coins include 25-satang and 50-satang pieces and baht in 1B, 2B, 5B, and 10B coins. Older coins have Thai numerals only, while newer coins have Thai and Arabic numerals. The 2B coin was introduced in 2007 and is confusingly similar in size and design to the 1B coin. Banknotes is issued in the following denominations: 20B (green), 50B (blue), 100B (red), 500B (purple) and 1000B (beige). You can exchange foreign currency at authorized agencies such as banks, exchange offices, and hotels. The current exchange rate is approximately 1 USD = 33 THB. For the most updated exchange rate, please check http://www.xe.com.

The standard electrical voltage in Thailand is 220 volts and 50 hertz. Bringing an adaptor is a good idea if you plan to use electronics (i.e., cell phones, laptops, cameras, etc.) during your trip.

Thai cooking emphasizes lightly prepared dishes with strong aromatic components and a spicy edge. It is known for its complex interplay of at least three and up to four or five fundamental taste senses in each dish or meal: sour, sweet, salty, bitter, and spicy. Thai cuisine is more accurately described as four regional cuisines corresponding to the four main regions of the country: Northern, Northeastern, Central, and Southern, each cuisine sharing similar foods or foods derived from those of neighboring countries and regions: Burma to the northwest, the Chinese province of Yunnan and Laos to the north, Vietnam and Cambodia to the east, Indonesia and Malaysia to the south of Thailand. In addition to these four regional cuisines, the Thai Royal Cuisine can trace its history back to the cosmopolitan palace cuisine of the Ayutthaya kingdom (1351–1767 CE). Its refinement, cooking techniques, and use of ingredients greatly influenced the cuisine of the Central Thai plains. Western influences from the 17th century CE onwards led to dishes such as foi thong and sangkhaya.

The official language of Thailand is Thai. Thai is a language with many dialects, though the Bangkok dialect, also known as Central Thai, is the standard and taught in all schools. Various dialects of Chinese are spoken by the ethnic Chinese community, with Teochew being the dominant dialect in Bangkok’s Chinatown and Cantonese speakers forming a sizeable minority among the Chinese community. Mandarin is taught in most Chinese schools, while Cantonese is commonly heard in the mass media due to the popularity of TVB serials from Hong Kong among the Chinese community, so many are conversant in both, in addition to their native dialect. Down south in Hat Yai, Hokkien is also widely understood due to many tourists from Penang.

WEATHER

The best time to visit most of Thailand is between November and February because it rains the least and is not too hot. This period is Thailand’s primary festival season, like Loi Krathong.

If you plan to focus on the northern provinces, the hot season (March to May) and the early rainy season (June to July) are not bad either, as temperatures are moderate at higher elevations. Northeastern and central Thailand, on the other hand, is best avoided from March to May, when temperatures may climb over 104°F. Because temperatures are more even year-round in the south (because it’s closer to the equator), the beaches and islands of southern Thailand are a good choice for respite when the rest of Thailand is miserably hot.

Thailand’s peak tourist season runs from November to late March, with secondary peaks in July and August. If you want to avoid crowds and take advantage of discounted room rates, consider traveling during the least crowded months (typically April to June, September, and October).

Although the rainy season (roughly July to October) gets a bad reputation, there are some bonuses: temperatures tend to be cooler, fewer tourists, and the landscape is lush and green. Depending on the region and the month, the rains might be hour-long downpours in the afternoon. October, however, tends to be the wettest month.

Average Temperatures

 

All temperatures in Fahrenheit (°F)

 

Month/CityJanFebMarAprMayJunJulAugSepOctNovDec
Bangkok72 - 9096 - 9378 - 9480 - 9779 - 9479 - 9378 - 9278 - 9177 - 9176 - 9175 - 9071 - 89
Chiang Mai57 - 8559 - 9166 - 9572 - 9773 - 9574 - 9174 - 8973 - 8872 - 8970 - 8965 - 8659 - 84
Chiang Rai55 - 8357 - 8862 - 9369 - 9673 - 9374 - 9074 - 8874 - 8773 - 8870 - 8763 - 8456 - 81
Hua Hin72 - 8674 - 8876 - 9078 - 9379 - 94 78- 9278 - 9177 - 9177 - 9076 - 8875 - 8672 - 85
Kanchanaburi67 - 9171 - 9675 - 9978 - 10178 - 9777 - 9477 - 9376 - 9276 - 9274 - 9071 - 8967 - 88
Ko Chang72 - 9173 - 9176 - 9277 - 9377 - 9277 - 9077 - 8977 - 8976 - 9075 - 9074 - 9172 - 90
Koh Samui70 - 7772 - 7873 - 8074 - 8273 - 8373 - 8372 - 8272 - 8272 - 8171 - 8170 - 7870 - 77
Krabi71 - 9172 - 9473 - 9474 - 9375 - 9174 - 8973 - 8973 - 8973 - 8872 - 8872 - 8871 - 89
Phi Phi Islands72 - 8872 - 9173 - 9175 - 9275 - 9175 - 9075 - 8875 - 8875 - 8873 - 8873 - 8673 - 88
Phuket76 - 9176 - 9277 - 9378 - 9478 - 9277 - 9077 - 8977 - 8976 - 8976 - 8976 - 8976 - 89
Sukhothai67 - 8869 - 9373 - 9678 - 10178 - 9878 - 9477 - 9277 - 9177 - 9276 - 9173 - 9168 - 88
Surat Thani70 - 8870 - 9171 - 9474 - 9575 - 9374 - 9274 - 9174 - 9174 - 9074 - 8973 - 8675 - 85
Surin64 - 8868 - 9273 - 9676 - 9777 - 9577 - 9276 - 9177 - 9075 - 8974 - 8869 - 8864 - 86
Ubon Ratchathani63 - 8968 - 9372 - 9676 - 9776 - 9676 - 9276 - 9074 - 8975 - 8972 - 8968 - 8864 - 87

OTHER INFORMATION

This will be contingent on your preference and the time of year you travel. Generally, we suggest that travelers pack lightly and bring comfortable, casual clothes in natural, “breathable” fabrics because of the humidity. Choose versatile styles that can be layered. A lightweight (preferably non-plastic) raincoat or poncho is a good idea, as well as a sweater or lightweight jacket for early morning/evenings and air-conditioned buildings. A sturdy pair of walking shoes is a must, as sandals may not be comfortable for some sightseeing activities. Some hotels have pools, so you may want to pack your swimming suit. Do not forget to bring sunblock, sunglasses, insect repellent, pocket packs of tissues, a sunhat, an umbrella (for both the sun and rain), and any medications you may need. Most hotels offer reliable laundry and dry cleaning services.

Always wear what you are most comfortable traveling in, but a reasonable amount of modesty ought to be exercised. In most areas, comfortable, casual clothes such as short-sleeved shirts, polo shorts, etc., are great for sightseeing. Remember that temperatures will likely be hot and humid, so wearing light, loose-fitting fabrics is a good idea.

 

When visiting temples in Thailand, remember that they are places of worship, so one should dress politely in modest and conservative clothing as they would at any other religious place. Clothing such as short-sleeved shirts, polo shirts, and bottoms or skirts that cover the knees are acceptable. You will need to cover one’s shoulders, and women will need to wear long-sleeved tops to cover their arms. Often, those that are not appropriately dressed will be turned away.

Hotels may impose a hefty charge on international calls. Check your hotel’s policy before placing any calls. You can use a calling card from your local, long-distance carrier to avoid hotel markups. Several United States cell phones manufactured today can operate overseas on the GSM (Global System for Mobile) standard. We recommend contacting your cell phone service provider to determine if your phone runs on the GSM and what activation may be required. In Indonesia, reception on any cell phone can be unreliable and unpredictable. In some locations, transmission is not possible at all. If access to e-mail is critical during your trip, please check availability in advance. Most hotels have business centers or in-room WI-FI service, and surcharges may apply.

The nationwide emergency phone numbers are:

Tourist Police: 1155

Ambulance and Rescue:  1669

Fire: 199

Police (General Emergency Call): 191

  • Lonely Planet Thailand (Travel Guide) by Lonely Planet
  • Four Reigns by Kukrit Pramoj
  • Anna and the King of Sian by Margaret Landon
  • The Beach by Alex Garland
  • Bangko 8 by John Burdett