Your expert on destination Thailand
Best Time to Visit Thailand: When to Go by Region and Coast
Published 13 October 2026
The best time to visit Thailand is November to February, the dry season, when the north and centre have mild weather and clear skies. For beaches, it depends on the coast: the Andaman side (Phuket, Krabi) is at its best from October to May, and the Gulf of Thailand (Koh Samui, Koh Phangan) from February to September. The two coasts have opposite seasons, so there is a good beach somewhere in Thailand almost all year.
Thailand has a dry season, a rainy season and a few weeks of transition in between. The climate is hot and humid, with temperatures generally between 20°C and 35°C (68°F to 95°F) depending on the region and the month. If you already know your dates, our local experts can build a route around them: take a look at our tailor-made trips to Thailand.
Best time to visit Thailand at a glance
| What you want | Best months | Where |
|---|---|---|
| A full trip: temples, culture, hiking | November to February | North and centre |
| Andaman beaches | October to May | Phuket, Krabi, Koh Phi Phi, Koh Lanta, Koh Lipe |
| Gulf beaches | February to September | Koh Samui, Koh Phangan, Koh Tao, Koh Chang |
| Lower prices and fewer visitors | May, June, September | Anywhere, with showers |
| Big festivals | April (Songkran), November (Loy Krathong) | Nationwide |
For a first circuit, plan 10 to 13 days. Fifteen days gives you room to combine several regions.
Best time to visit northern and central Thailand
The dry season runs from November to March and is the most pleasant time to travel here: mild temperatures (15°C to 30°C, or 59°F to 86°F, in the north, a little hotter in the centre), clear skies and low humidity. October is the tail end of the monsoon. It can still be rainy, but the weather gets milder week by week.
April is the hot month. The heat peaks, often above 35°C (95°F). From May to September the monsoon brings regular showers, usually short, along with lush green landscapes and fewer visitors. This "green" season shows another side of the country, although a beach-only stay is best avoided then in the north and centre. For live forecasts, the Thai Meteorological Department is the official source.
| Region | Best period | What to expect |
|---|---|---|
| North (Chiang Mai, Chiang Rai) | November to February | Cool season, 15 to 30°C, clear skies |
| Centre (Bangkok, Ayutthaya) | December to April | Mild temperatures |
Want a route around Chiang Mai and Chiang Rai? Browse our Thailand trip ideas.
Best time to visit Thailand's beaches
Thailand's coasts have contrasting climates, which is why you can swim almost year round. Which coast to pick depends on the month.
- Andaman coast (Phuket, Krabi, Koh Phi Phi, Koh Lanta, Koh Lipe): the best time for the beach is October to May, with dry, sunny weather. From June to September the monsoon sets in, the sea is rougher and some islands are harder to reach. This is also the answer to "best time to visit Phuket".
- Gulf of Thailand (Koh Samui, Koh Phangan, Koh Tao, Koh Chang): the climate is the mirror image, with a dry season from February to September. October to January is the rainy season, and it is more marked on these islands.
- Hua Hin, south of Bangkok, is sheltered from the heavy rains and stays pleasant nearly all year, August included.
| Months | Andaman coast | Gulf of Thailand | Our advice |
|---|---|---|---|
| November to January | Dry and sunny | Rainy season | Choose the Andaman coast |
| February to April | Dry and sunny | Dry season | Either coast works |
| May | Start of the monsoon (rain) | Generally dry | Choose the Gulf islands |
| June to September | Frequent rain | Dry season, good weather | Choose the Gulf of Thailand |
| October | End of the monsoon | Start of the monsoon (rain) | Check the local forecast |
Whatever the month, one of the two coasts will usually give you a good beach stay.
Can you visit Thailand in the rainy season?
Yes. The rain is the price of a greener, quieter and cheaper Thailand. Showers are generally short, the countryside is lush, and the low season brings lower rates (see the table below). The trade-offs are real: on the Andaman coast the sea is rougher from June to September, and a beach-only trip is the one plan that does not work in the north and centre.
If you want sand during the monsoon, go to the Gulf islands such as Koh Samui and Koh Phangan, which stay dry from February to September.
Our local expert Li-Xia has a simple rule for the rainy season: showers are brief and fall mostly in the afternoon, so schedule your visits for the morning.
High, mid and low season: crowds and prices
High season runs from November to January and peaks in December during the holidays and New Year. Crowds, prices and demand for accommodation are all high. Chinese New Year (late January or early February) and Songkran (mid-April) bring extra peaks.
March, April, July, August and October see moderate numbers of visitors. The low season is May, June and September: up to 50% off at some accommodation, a more authentic atmosphere and quieter sites, with showers that can be intense.
| Season | Months | Crowds | Upside | Downside |
|---|---|---|---|---|
| Peak season | December | Peak | Dry weather, festivities | Crowds, high prices |
| High season | November to January | High | Dry, pleasant climate | Mass tourism |
| Mid season | March, April, July, August, October | Moderate | Less crowded than in winter | Possible showers, variable weather |
| Low season | May, June, September | Low | Attractive prices, peace and quiet | Rain, reduced access to some islands |
Festivals worth planning around
A local festival adds a cultural layer to any trip. The main dates, which for lunar festivals shift from year to year (check the Tourism Authority of Thailand for current dates):
- Chiang Mai Flower Festival, usually early February: flower floats and horticultural shows during the cool season.
- Songkran, the Thai New Year, 13 to 15 April: water fights in the streets as a symbol of purification and renewal, lively across the country.
- Phi Ta Khon (Ghost Festival) in Dan Sai, usually late June: a colorful folk parade in the north-east.
- Phuket Vegetarian Festival, usually late September to mid-October, with the exact date set by the Chinese lunar calendar: colorful processions and dramatic purification rituals.
- Loy Krathong, usually late November, date set by the lunar calendar: a night of floating flowers and lanterns on the water.
- Music and arts events: Pattaya in March, Chiang Rai in late May and June.
Songkran and Loy Krathong noticeably raise crowds, so book early.
What to pack and practical tips by season
In the dry season (November to April, May in the south), bring light, breathable clothes: T-shirts, loose trousers, sandals, a hat and sunglasses, plus a light sweater for the evenings, especially in the north. Sunscreen and plenty of water matter most in the hottest hours.
In the rainy season (May to October), pack quick-drying clothes, a compact raincoat or umbrella and shoes that cope with rain. A poncho helps in sudden downpours. Use mosquito repellent, wear covering clothes in the evening and avoid stagnant water.
A few other things to know:
- Cover your shoulders and knees at temples and the Grand Palace, and take off your shoes before entering a sanctuary.
- Near islands and marine parks, use a reef-friendly sunscreen.
- Around Chiang Mai, nights from November to February are cool enough to justify a fleece.
For more on planning, see our Thailand travel guide.
Which months suit you
- November to February: the full-trip window. Mild weather across the country, good for hiking, temples, local culture and the Andaman beaches.
- March to May: sometimes intense heat and the major festivals. A good time for the south-east and for some music and cultural events.
- June to October: the green season, with lower rates and rich landscapes. Choose the Gulf islands if you want a beach while the rest of the country has its monsoon.
If you need one month, December and January have the steadiest weather but the most people. November and February are very favorable with slightly fewer visitors.
Plan your Thailand trip with a local expert
Tell us when you can travel and what you want to see, and one of our local experts will shape the route with you, matching the region and coast to your dates. Create your trip.
Best time to visit Thailand FAQ
The best time to visit Thailand is November to February, in the dry season in the north and centre. The climate is mild and the skies are clear, which suits a full trip with temples, hiking and the Andaman beaches. Expect more visitors and higher prices, especially in December.
In the north and centre, the monsoon runs from May to September. On the coasts the rainy season varies: June to September on the Andaman coast and October to January in the Gulf of Thailand. That offset is why there is usually a dry beach somewhere in the country.
December and January offer the most stable weather, but they are also the busiest months. November and February remain very favorable with slightly fewer people, so they are a good choice if you want the dry season at a calmer pace.
Yes. Showers are generally short, the landscapes are green and there are fewer visitors. For a beach stay, choose the Gulf of Thailand (Koh Samui, Koh Phangan), which stays dry from February to September, and plan sightseeing for the morning, before afternoon showers.
The high season runs from November to January and peaks in December. Crowds, prices and demand for accommodation are all high. Chinese New Year (late January or early February) and Songkran (mid-April) add further peaks in visitor numbers, so book early for those dates.
The low season, May, June and September, is the cheapest time. Some accommodation offers up to 50% off, and sites are quieter. The trade-offs are showers that can be intense and reduced access to some islands, so pick the Gulf islands for a beach.
