Thailand is one of the easiest long-haul countries to travel in and one of the easiest to plan badly. Flights are frequent, domestic transport is cheap and the tourism industry is genuinely experienced, which is exactly what tempts people into a two-week trip with six destinations, four internal flights and a ferry booked ninety minutes before a connecting flight.
The country is also bigger than it looks on a map. Bangkok to Chiang Mai is roughly 700 kilometres, Bangkok to Phuket about the same again in the other direction, and the southern islands sit on two coastlines with two different weather patterns. This guide is built around the decisions that follow from that: which places deserve your nights, how many stops your trip can carry, when the weather works in your favour, and the practical Thailand travel tips that keep the holiday out of departure halls.
Best Places to Visit in Thailand
Most first trips draw from the same shortlist, and that is because the transport links are good and the places are genuinely different from each other. Below is what each one offers, who it suits and roughly how long it deserves.
Bangkok
Bangkok is treated as an airport with a city attached far too often. Give it two or three nights instead of one and it becomes a dense, river-shaped city with some of the best eating anywhere in Asia. The historic core sits along the Chao Phraya: the Grand Palace and Wat Phra Kaew for ceremony and crowds, Wat Pho and its reclining Buddha for something calmer, Wat Arun across the water via a cross-river ferry that costs a few baht.
Away from the temples the neighbourhoods do the work: Yaowarat for the country's most concentrated street food after dark, Thonglor and Ekkamai for modern Thai restaurants, Ari for coffee and quieter streets, Siam and Sukhumvit for air-conditioned shopping. Use the BTS Skytrain and the MRT rather than taxis at rush hour; both meet the river boats at Saphan Taksin. Bangkok is also the hinge of nearly every itinerary, with long-haul arrivals at Suvarnabhumi (BKK) and most low-cost domestic flights from Don Mueang (DMK) on the other side of the city, so two or three nights doubles as your buffer against long-haul delays. Suits: first-timers, food travellers, anyone with a flexible day to spare.
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Chiang Mai
Chiang Mai is the counterweight to Bangkok: smaller, slower, cooler in the evenings and ringed by mountains. The moated Old City is about 1.5 kilometres a side and full of temples you can walk between, with Wat Chedi Luang and Wat Phra Singh the obvious anchors. Wat Phra That Doi Suthep, on the mountain above the city, is the one most visitors make time for, best early or late.
Northern food is a genuine reason to come, from khao soi to sai ua sausage, and Doi Inthanon National Park is the standard full day out of town. Three nights is a comfortable minimum: one for the Old City, one for the mountain, one for a day trip. Suits: culture, food and cooler mountain air rather than a beach.
Northern Thailand has an agricultural burning season, usually from around February to April, when air quality in and around Chiang Mai can deteriorate noticeably. It varies year to year, so check current readings before committing to a long northern stay in late winter and early spring.
Phuket
Phuket is not a beach, it is an island of roughly 540 square kilometres with an international airport, hospitals, a historic town and dozens of beaches that produce very different holidays. Patong is the loud, developed end; Kata and Karon just south are calmer versions with good swimming and enough evening life for families; Nai Harn, Bang Tao and the smaller bays are resort-led and quiet. Phuket Old Town, with its Sino-Portuguese shophouses and Peranakan food, has no beach at all and still earns an afternoon.
The practical case is strong: Phuket International Airport (HKT) takes direct flights from across Asia plus seasonal long-haul services, hotels run from hostels to serious luxury, and boats to Phi Phi, Phang Nga Bay and the Similan Islands in season leave from here. Book the area, not just the island, because airport transfers to the southern beaches can take an hour or more. Suits: five nights or more, mixed groups, anyone who wants choice on the doorstep.
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Krabi
Krabi province, across the bay on the mainland, trades some of Phuket's convenience for better scenery: the limestone karst towers in every photograph of southern Thailand are concentrated here. Ao Nang is the walkable base with boats leaving from the beach all day, and Railay, a short long-tail ride away, is cut off from the road by cliffs, which is what makes it both quiet and one of Asia's best-known climbing spots.
It is also the best launch point for the islands nearby, with four-island and Hong Island day trips from Ao Nang, ferries to Koh Phi Phi, and Koh Lanta two hours south by road for long flat beaches and almost no nightlife. Krabi International Airport (KBV) has strong domestic connections and fewer international routes. Suits: couples, kayakers and climbers, and anyone who wants scenery over facilities. Four nights and up.
Koh Samui
Koh Samui sits on the Gulf coast, which matters more than it sounds: it runs on a different weather cycle from the Andaman islands, so it is the right answer for certain months. Chaweng is the main strip with the longest beach and most of the nightlife, Bophut's Fisherman's Village is the relaxed middle ground, and Mae Nam and Choeng Mon are quieter again.
The archipelago is the real draw: Koh Phangan half an hour away by boat, Koh Tao as the dive-training centre of Thailand, and Ang Thong National Marine Park as the standard day trip. Samui's airport (USM) is privately operated and usually more expensive to fly into than Phuket or Krabi; flying to Surat Thani and taking the bus and ferry is cheaper and considerably slower. Suits: June to September trips, and beach days with an easy island hop attached.
Ayutthaya
Ayutthaya was the Siamese capital for more than four centuries until its destruction in 1767, and what remains is a UNESCO World Heritage site of brick prangs and Buddha images on a river island about 80 kilometres north of Bangkok. Wat Mahathat holds the famous Buddha head in fig-tree roots; Wat Chaiwatthanaram is at its best late in the day.
Trains from Bangkok take a little over an hour and run frequently, so a day trip is entirely reasonable, and the site is spread out enough that a bicycle or a tuk-tuk hired for a few hours changes how much you see. Staying overnight buys you the ruins at sunrise and sunset. What does not work is adding it to a day that already includes a flight.
Khao Sok
Khao Sok National Park, inland from the Andaman coast, is the counter-programme to a beach holiday: old rainforest and limestone mountains standing in fresh water. The centrepiece is Cheow Lan Lake, where floating raft houses sit at the base of the cliffs and dawn boat trips come with gibbons and hornbills.
It fits a southern itinerary because it sits between the coasts, roughly two to three hours by road from Surat Thani, Krabi or Phuket, so one or two nights slot neatly between a west-coast beach and a Gulf island. Facilities are simple, phone signal on the lake is patchy and raft houses are best booked in advance.
Things to Do in Thailand
Activities work best matched to the place rather than collected as a checklist, and a good week has room for one temple morning, one food-led evening, one boat day and one day with nothing booked at all. A representative spread:
- Temples: Bangkok's riverside cluster for scale and ceremony, Chiang Mai's Old City for the walkable version, Ayutthaya for ruins rather than working temples.
- Street food and markets: Yaowarat after dark, Chiang Mai's night markets for northern dishes, island morning markets for the cheapest and quietest eating.
- Cooking classes: best in Chiang Mai and Bangkok, where they usually start at a market rather than a recipe card.
- Muay Thai: purpose-built stadiums in Bangkok run regular fight nights, and training camps take beginners for single sessions in most tourist areas.
- Diving and snorkelling: Koh Tao for training, the Similan Islands seasonally from Phuket and Khao Lak, Koh Lanta for drift dives.
- Sea kayaking: Ao Thalane near Krabi and Phang Nga Bay from Phuket, where a kayak reaches caves and lagoons boats cannot enter.
- National parks: Doi Inthanon in the north, Khao Sok in the south, Ang Thong from Samui. Check access before travelling, as some marine parks close seasonally.
Phuket or Krabi?
They are an hour or two apart, share the same Andaman weather and look similar in photographs, but they deliver different holidays.
| Phuket | Krabi | |
|---|---|---|
| Atmosphere | Developed, urban in places, always something open | Smaller-scale, quieter, earlier evenings |
| Scenery | Good beaches, best views from boat trips | Limestone cliffs at the beach itself |
| Nightlife | Extensive, from beach bars to Bangla Road | Modest: bars and restaurants, little late nightlife |
| Hotels and food | Widest range in southern Thailand, including international dining | Good mid-range and resort choice, less variety |
| Airport | HKT: many international and domestic routes | KBV: strong domestic, fewer international routes |
| Excursions | Phi Phi, Phang Nga Bay, Similans in season | Four islands, Hong Islands, Phi Phi, Koh Lanta |
Choose Phuket for hotel and restaurant range, direct international flights, mixed groups and short trips where you want to be on a beach within an hour of landing. Choose Krabi if scenery is the point, if you want to climb, kayak or take boats most days, or if you are heading on to Koh Lanta or Phi Phi. A third option suits a lot of two-week trips: fly into Phuket, move to Krabi or Koh Lanta by ferry, and fly home from Krabi without backtracking.
Best Time to Visit Thailand
Thailand does not have one national weather pattern. Bangkok, the central plains and the north run on three seasons: cooler and drier from around November to February, hot from March to May, then a rainy season influenced by the southwest monsoon from about May or June to October. The south is the part worth planning carefully, because its two coasts do not share a season.
| Period | Bangkok and central | Northern Thailand | Andaman coast | Gulf islands |
|---|---|---|---|---|
| Nov to Feb | Driest and most comfortable | Cool mornings, clear skies | Peak season, generally driest | Generally good, wettest late in the year |
| Mar to May | Hot and humid | Hot, hazy at times | Hot, sea calm, building humidity | Hot, often settled |
| Jun to Oct | Frequent afternoon rain | Green, wet, fewer visitors | Wettest, rougher seas | Often the driest stretch of the year |
The Andaman coast, which is Phuket, Krabi, Koh Lanta and Phi Phi, takes the southwest monsoon head-on: driest and calmest roughly November to April, wetter with rougher seas and cancelled boat days from about May to October. The Gulf islands of Koh Samui, Koh Phangan and Koh Tao are sheltered from that monsoon and get their wettest weeks later, typically October to December. In practice, choose the Andaman side in January and February, and the Gulf in June, July and August. Match the coast to your dates and the rest of the planning gets easier.
Rainy season here rarely means all-day rain. It usually means heavy afternoon or evening downpours with dry mornings, and the risk of a washed-out day rather than a washed-out week. The seasons above are patterns, not promises, so check current forecasts and, for the islands, marine conditions before booking boat days.
How Long Should You Spend in Thailand?
Long-haul travel eats days at both ends, and internal moves eat more than people expect. A domestic flight is a checkout, a transfer, a check-in, the flight and another transfer, so budget half a day for every move you add.
- 7 days: two bases. Bangkok plus one beach is the classic version; Bangkok plus Chiang Mai if you would rather have temples, food and mountains.
- 10 to 14 days: three bases become comfortable, for example Bangkok, Chiang Mai and Krabi, or Bangkok, Phuket and one second southern stop such as Koh Lanta or Khao Sok. Ayutthaya as a day trip from Bangkok costs nothing in transit.
- 3 weeks: slow down rather than add stops. A week on one island, two nights on the lake at Khao Sok, Chiang Rai or Pai after Chiang Mai, or a region most itineraries skip such as Isaan.
Two places you know well at the end of a trip beat five you passed through, and Thailand is close enough to a repeat visit that leaving something for next time is a reasonable strategy.
Getting Around Thailand
Domestic transport is one of the things Thailand does very well. The trap is not availability, it is connection planning.
- Domestic flights: the standard way to cover the long legs, roughly one to one and a half hours from Bangkok to Chiang Mai, Phuket, Krabi or Samui. Check which Bangkok airport you are using, because BKK and DMK are about 50 kilometres apart.
- Trains: slow, comfortable and scenic on the right routes. The Bangkok to Chiang Mai sleeper is an experience in itself; Bangkok to Ayutthaya is a cheap commuter run.
- Buses and minivans: the cheapest way between towns. Minivans are quicker and tighter, and long-distance VIP buses are more comfortable than most people expect.
- Ferries and speedboats: how you reach the islands. Schedules thin out in low season and can be cancelled in rough weather, especially on the Andaman side between May and October.
- In the cities: the BTS Skytrain, MRT and Chao Phraya express boats beat a taxi at almost any busy hour, and app-based ride-hailing is widely available in Bangkok, Phuket and Chiang Mai.
The connection rule worth internalising: never put a ferry, a domestic flight and an international flight on the same day on separate tickets. If your international flight leaves Bangkok in the morning, relying on a ferry and a separately booked domestic flight to get you there the same day adds unnecessary risk. Give island departures a buffer night near the airport instead, and prefer a single ticket for domestic to international connections. If you would rather have a car waiting after a long flight, you can book an airport transfer through Holidair; coverage varies by airport, so check your route.
Staying Connected in Thailand
A working data connection changes the trip more than most gadgets: maps for walking Bangkok, live transport apps, ride-hailing without haggling, translation for menus outside tourist areas, and a way to reach a hotel or boat operator when something changes at short notice. Local prepaid SIM cards are cheap and sold in every arrivals hall, at the cost of a queue, passport registration and swapping out your home SIM. An eSIM does the same job without any of that, activating when you land and keeping your usual number reachable. If you are travelling from Europe, check your existing plan first, since roaming terms vary widely outside the EU.
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What to Eat in Thailand
Thai food is regional in a way that surprises people whose reference point is a Thai restaurant at home. The central plains produced the dishes that travelled internationally, while the north, northeast and south eat differently, so it is worth ordering accordingly.
- Pad kra pao: minced meat fried hard with holy basil and chilli over rice with a fried egg. The everyday Thai lunch and the best test of a small kitchen.
- Som tam: green papaya salad from the northeast, pounded to order. Say how much chilli you actually want, because the default is not calibrated for visitors.
- Tom yum: hot and sour soup, usually with prawns. Tom kha, its coconut-milk relative, is the gentler option.
- Khao soi: northern curried noodles, at their best in and around Chiang Mai; massaman curry is the mild, slow-cooked southern counterpoint.
- Southern Thai food: the spiciest regional cooking in the country, built on turmeric, fresh chilli and seafood.
- Seafood: excellent on both coasts and usually priced by weight, so confirm the price per kilo before it is cooked.
Street food is not automatically better or safer than a restaurant, and not automatically worse either. The signals are the same everywhere: busy, quick turnover, cooked to order in front of you, and one or two specialities rather than a laminated menu of forty. If you have a sensitive stomach, ease in rather than starting with raw seafood salads on day one, and stick to bottled or filtered water, which is what most Thai households drink too. On the islands, the best value is usually a short walk inland from the beach road.
Thailand Travel Tips: Culture and Temple Etiquette
Thailand is relaxed with visitors, but temples and royal sites are not casual spaces, and the rules are taken seriously rather than treated as suggestions.
- Cover shoulders and knees at temples. Major sites such as the Grand Palace enforce it at the entrance; smaller temples may not, but the expectation is the same.
- Take your shoes off before entering a temple building, and follow the sign or the shoe rack at the door.
- Buddha images are sacred objects, not backdrops. Do not climb on them, turn your back on them for photographs, or point your feet towards them when sitting.
- Monks follow their own rules; women should avoid physical contact and hand items to a monk indirectly.
- Keep your voice down inside temple buildings and check whether photography is allowed, particularly during ceremonies.
- Beachwear belongs on the beach. Cover up walking into town and dress modestly in smaller villages.
- The Thai monarchy is protected by law and disrespect towards it is a criminal matter, not a subject for jokes.
In practice this is simple: carry a light scarf or long trousers in your day bag, watch what people around you are doing, and read the sign at the gate, since individual temples set their own additional rules.
Is Thailand Expensive?
Thailand works at almost any budget, which is not the same as being cheap. The same week can cost wildly different amounts depending on four things: where you stay, where you eat, how you move and when you go. Bangkok and the developed island resorts are the expensive end, while smaller cities and the mainland south are considerably cheaper for the same standard. A market meal and a beachfront tourist restaurant in the same town differ by a large multiple, and the cheaper one is often better. Public transport costs a fraction of private cars, and high season on the Andaman coast between December and February can double the price of the same hotel room compared with September.
Rather than working to a daily figure copied from a blog, price your actual trip: check accommodation for your dates in the areas you are considering, add the flights you would realistically take, and assume a mix of local and tourist meals. Excursions, dive courses and spa programmes are where budgets quietly disappear.
Thailand Digital Arrival Card (TDAC)
The Thailand Digital Arrival Card is an online arrival form submitted to Thai Immigration before you travel, replacing the paper TM6 card that used to be handed out on the plane. It is a declaration rather than a visa, and completing it does not grant permission to enter. You submit it online shortly before arrival with your passport and travel details, your accommodation in Thailand and basic health information, then show the confirmation on arrival. The official service is free of charge.
Arrival card rules, the submission window and the exemptions change from time to time. Use only the official Thai Immigration service, and check the current requirements shortly before you travel. Several commercial sites charge for what is a free government form.
Official service: tdac.immigration.go.th.
Visa and Entry Requirements
Entry requirements depend on your nationality, how long you intend to stay, why you are travelling and current Thai policy, which has changed several times in recent years. Many nationalities can enter for tourism without a visa in advance, but the qualifying list and the permitted length of stay are revised periodically, so a duration quoted in an article or forum post is not a reliable basis for booking.
- Check the current rules for your passport with the Thai Ministry of Foreign Affairs: mfa.go.th.
- Apply through the official Thai e-Visa service if you need a visa in advance: thaievisa.go.th.
- Confirm details with the Thai embassy or consulate for your country of residence if your situation is not standard.
- Airlines check passport validity and onward travel at check-in, so make sure your passport meets the required remaining validity and that you can show a return or onward ticket.
Keep the two separate in your head: the arrival card is a declaration everyone submits, while a visa or visa exemption is the permission to enter and stay. Neither replaces the other.
Thailand Travel Guide FAQ
What is the best time to visit Thailand?
November to February for most of the country, with the Gulf islands as the exception: Koh Samui, Koh Phangan and Koh Tao are wettest around October to December and often at their best between June and September.
How many days do you need in Thailand?
Seven days covers two bases, ten to fourteen days makes three comfortable, and three weeks is better spent slowing down than adding further stops.
Is Thailand good for a first trip to Asia?
Yes. Tourism infrastructure is well established, English is widely used in tourist areas, domestic transport is frequent and inexpensive, and accommodation covers every level. The main adjustments are the heat, Bangkok traffic and the distances involved.
Which Thai island should I choose?
Phuket for facilities and flight connections, Koh Lanta or Koh Yao Noi for quiet Andaman beaches, Koh Phi Phi for dramatic scenery and crowds, Koh Samui for the Gulf coast with an airport, Koh Phangan for a mix of parties and quiet bays, Koh Tao for diving. Your dates should decide the coast before you pick the island.
Do I need TDAC?
The Thailand Digital Arrival Card applies to foreign nationals arriving in Thailand and is submitted free of charge through the official Thai Immigration service before travel. Requirements and exemptions can change, so confirm the current rules shortly before departure.
Do I need a visa for Thailand?
That depends on your nationality, your length of stay and your reason for travelling. Check the Thai Ministry of Foreign Affairs or the official Thai e-Visa service before booking, and remember that the arrival card is separate from visa permission.
Entry rules, transport schedules, national park access and prices change. This guide was published in August 2026. Verify time-sensitive details before booking, using Thai Immigration, the Thai Ministry of Foreign Affairs, the Tourism Authority of Thailand, the Department of National Parks and, for Ayutthaya, UNESCO.