UNESCO ancient capitals, a UNESCO-listed New Year water festival, three seasons, temple etiquette and islands on two seas: what a first visit to Thailand shows you.
Thailand is one of the most visited countries in Asia and one that rewards a slower first trip. These are twelve facts we checked against encyclopedic and official-type sources, chosen because they tend to impress people arriving for the first time.
1. A long, continuous state tradition
Siam, officially renamed Thailand on 24 June 1939, is described as the only country in Southeast Asia that avoided colonisation by European powers, although it made concessions under several unequal treaties. Today Thailand has a population of nearly 66 million and Bangkok is its capital.
2. Ancient capitals on the UNESCO list
The historic towns of Sukhothai and the Historic City of Ayutthaya were inscribed in 1991. Ayutthaya, founded in 1350, was a major trading hub until it was sacked in 1767, and its brick pagodas and Buddha statues rise from lawns and the river. Ban Chiang, a prehistoric site occupied around 1500-900 BCE, was inscribed in 1992. The full current list is on the UNESCO page for Thailand.
3. Temples are living places
About 93% of Thais are Buddhist (2018 census figure). Temples (wats) are active places of worship as well as sights. Dress for them with shoulders and knees covered, take off shoes before entering the main hall, keep your voice low and do not point your feet at Buddha images. Large sites such as Bangkok's Wat Phra Kaew apply a strict dress code and may refuse entry.
4. Respect for the monarchy
Thailand is a constitutional monarchy, and the king and royal family are held in deep respect. Thai law protects the monarchy, and disrespectful comments or behaviour can be a criminal offence. As a visitor it is simplest to avoid joking or commenting on the subject, to stand when the royal anthem is played in public places or before films, and not to step on or deface banknotes or coins, which carry the king's image.
5. Food is part of the heritage
Thai cuisine is built on balancing sweet, sour, salty and spicy, and you can eat well at street stalls, markets and restaurants. Thailand also has four elements on UNESCO's intangible heritage list: Khon masked dance drama (2018), Nuad Thai massage (2019), Nora dance drama (2021) and Songkran (2023). If you are sensitive to spice, say so when you order.
6. Three seasons
In general Thailand has a hot season (roughly March-May), a rainy season (roughly May/June-October) and a cooler, drier season (roughly November-February), which is the most popular for visits. Regions differ: the Andaman coast and islands (including Phuket) are wettest from about May to October, while the Gulf islands such as Koh Samui follow a somewhat different pattern. Check the forecast of the Thai Meteorological Department before choosing an island.
7. Islands on two seas
Thailand has islands on the Andaman Sea (Phuket, Krabi area, Phi Phi) and on the Gulf of Thailand (Koh Samui, Koh Tao, Koh Phangan). Reaching small islands needs ferries or speedboats, and sea conditions matter: in the rainy season some boats stop or sea swimming is dangerous. Follow flag warnings on beaches.
8. Transport: BTS, MRT and ride-hailing
In Bangkok the BTS Skytrain and MRT metro are the fastest ways through traffic. Ride-hailing apps and metered taxis are common, and tuk-tuks should be priced before you board. Traffic drives on the left, and renting a scooter without a licence valid in Thailand is risky: insurance may not cover you and police checks are common.
9. Songkran, the water festival
Songkran, the traditional Thai New Year, is celebrated around 13-15 April and is known for water fights in the streets. UNESCO inscribed it on the Representative List of Intangible Cultural Heritage in December 2023. It is also the hottest period of the year, and visitors who do not want to be soaked should plan accordingly.
10. Loy Krathong, the festival of lights
Loy Krathong falls on the night of the full moon of the twelfth lunar month, in 2026 on about 24-25 November (sources differ by a day). People float small decorated baskets (krathong) on rivers and lakes, and in some cities, including Chiang Mai, lanterns fill the sky. Use biodegradable krathongs and follow local rules on lanterns.
11. Currency and money
The baht (THB) is the currency. Cards are accepted in shops and hotels, but small vendors, markets and many taxis prefer cash. ATMs charge a fee for foreign cards, so withdraw larger amounts less often.
12. Visa-free entry has changed in 2026
Until 14 September 2026 citizens of 93 countries could enter visa-free for up to 60 days. From 15 September 2026 a revised scheme applies: reportedly 30 days for 59-60 countries and territories, including EU member states such as Poland, with special arrangements for some other nationalities, and limits on repeated land-border entries. Rules for Russian citizens and for other nationalities differ, so check the Thai Ministry of Foreign Affairs and your embassy before booking. Read more in our guide to visa options for property buyers in Thailand.
Practical tips for your first visit
- Airport and transfers: Bangkok has two airports (Suvarnabhumi and Don Mueang); use official taxi queues or ride-hailing.
- Local transport: BTS and MRT in Bangkok; domestic flights or trains to reach the north and islands.
- Payments: baht, cards in cities; keep small notes.
- Book ahead: flights and rooms around Songkran, Loy Krathong and December-January.
- Dress and customs: cover shoulders and knees in temples, remove shoes, do not touch people's heads, and use the "wai" greeting politely.
- Health: sun, heat and water safety. Check insurance for scooter use and sea activities.
FAQ
When is the best time to visit Thailand? Many visitors choose November to February for cooler, drier weather, but regions differ.
Do I need a visa? It depends on your nationality and the entry rules in force when you travel; since 15 September 2026 the visa-free stay for many countries is reported as 30 days. Check the Ministry of Foreign Affairs website.
Is it safe? Millions of tourists visit without problems, but the main risks are traffic, sea conditions and scams around tourist sites. Use common sense.
Can I talk about the royal family? It is best to avoid commenting, as Thai law protects the monarchy.
Can I visit temples in shorts? Not at most temples. Cover shoulders and knees.
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