Best time to visit · Southeast AsiaOriginal Research
When to go to Thailand
The cool, dry season from November to February is ideal across most of the country. March–May is scorching, and the monsoon runs June–October.
Best: November–FebruaryPeak: December–February
Month-by-month
Jan
Great
21°–32°C · 10mm rain
Crowds high · Prices high
Crowds high · Prices high
Book flights and hotels well ahead; prices peak and popular islands fill quickly.
Feb
Great
23°–33°C · 20mm rain
Crowds high · Prices high
Crowds high · Prices high
Northern Thailand starts to see haze late in the month from agricultural burning.
Mar
Good
25°–34°C · 30mm rain
Crowds medium · Prices medium
Crowds medium · Prices medium
Avoid Chiang Mai and Chiang Rai this month due to severe agricultural burning haze.
Apr
Okay
26°–35°C · 65mm rain
Crowds high · Prices medium
Crowds high · Prices medium
Book Songkran accommodation months ahead; expect city closures and drenched sightseeing plans.
May
Okay
26°–34°C · 220mm rain
Crowds low · Prices low
Crowds low · Prices low
Andaman coast (Phuket, Krabi) gets rougher seas; Gulf islands stay drier and calmer.
Jun
Okay
26°–33°C · 150mm rain
Crowds low · Prices low
Crowds low · Prices low
Gulf islands (Koh Samui, Koh Phangan) have their driest window this month.
Jul
Okay
25°–33°C · 155mm rain
Crowds medium · Prices medium
Crowds medium · Prices medium
Alcohol sales are banned on Buddhist holy days; plan accordingly.
Aug
Okay
25°–32°C · 190mm rain
Crowds medium · Prices medium
Crowds medium · Prices medium
Flooding possible in Ayutthaya and Chiang Mai; check conditions before rural travel.
Sep
Avoid
25°–32°C · 335mm rain
Crowds low · Prices low
Crowds low · Prices low
Phuket and Andaman coast see rough seas; many small islands close resorts entirely.
Oct
Okay
24°–32°C · 290mm rain
Crowds low · Prices low
Crowds low · Prices low
Bangkok flooding along the Chao Phraya can occur after heavy upstream rain.
Nov
Great
23°–31°C · 55mm rain
Crowds high · Prices high
Crowds high · Prices high
Loy Krathong dates shift yearly with the lunar calendar; book Chiang Mai months ahead.
Dec
Great
21°–31°C · 10mm rain
Crowds high · Prices high
Crowds high · Prices high
Reserve everything—flights, islands, and Bangkok hotels—two to three months in advance.
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Festivals worth timing your trip around
Jan
Bo Sang Umbrella Festival
A three-day village celebration showcasing hand-painted paper umbrellas and parasols, with craft demonstrations, a beauty contest on bicycles carrying umbrellas, and traditional Lanna music performances along the main street.
Feb
Chiang Mai Flower Festival
A weekend of floral parades, garden displays, and beauty pageants celebrating the region's cool-season blooms. Elaborate flower-covered floats travel from Nawarat Bridge to Suan Buak Haad Park downtown.
Feb
Makha Bucha Day
A Buddhist holy day marking Buddha's sermon to 1,250 enlightened monks. Devotees visit temples, make merit, and join candlelit processions circling ordination halls three times after sunset.
Mar
Pattaya International Music Festival
A free three-day beachfront concert series featuring Thai pop, rock, and international acts across multiple stages along Beach Road. Performances run from late afternoon into the night with food vendors throughout.
Apr
Songkran (Thai New Year)
Thailand's biggest festival marks the traditional new year with nationwide water fights in the streets. Temples host merit-making ceremonies while Chiang Mai's moat and Bangkok's Khao San Road become massive open-air water battles.
May
Royal Ploughing Ceremony
An ancient Brahmin-Buddhist rite held at Sanam Luang to mark the start of the rice-growing season. Sacred oxen plough a ceremonial furrow and their food choices are read to predict the year's harvest.
Jun
Phi Ta Khon Ghost Festival
A raucous three-day Isan festival where villagers wear towering ghost masks made from coconut trunks and rice husks, parade through town, and re-enact a Buddhist tale with drums, dancing, and rice whiskey.
Jul
Asalha Bucha & Khao Phansa
Back-to-back Buddhist holidays marking Buddha's first sermon and the start of Buddhist Lent. Candle processions and giant carved-wax candle parades in Ubon Ratchathani are the most spectacular observances.
Aug
Her Majesty the Queen Mother's Birthday
A national holiday also observed as Mother's Day, marked by illuminated public buildings, temple ceremonies, and blue floral tributes. Bangkok's Ratchadamnoen Avenue is decorated with lights and portraits.
Sep
Sart Thai Festival
A Buddhist merit-making occasion when Thais offer krayasart, a sweet made from rice, sesame, peanuts, and sugar, to monks and ancestors. Southern provinces observe the related Sart Duan Sib with elaborate temple offerings.
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Common questions about Thailand
- When is the best time to visit Thailand?
- November–February. The cool, dry season from November to February is ideal across most of the country. March–May is scorching, and the monsoon runs June–October.
- When is the cheapest time to visit Thailand?
- Prices bottom out in May, Jun, Sep, Oct — typically 20-40% below peak-season rates on hotels and flights.
- What months should I avoid in Thailand?
- Sep. Phuket and Andaman coast see rough seas; many small islands close resorts entirely.
- When is peak tourist season in Thailand?
- December–February
See also the full Thailand climate deep-dive with temperature heatmap and daily-rainfall breakdown.
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— How we report this guide
What you read here, and where it came from.
- Climate data — temperature, rainfall, and humidity numbers cite WMO 30-year normals plus the most recent decade where available, cross-checked with the destination's national meteorological service.
- Crowd & price calls — sourced from our editors' on-the-ground reporting in Thailand plus published hotel ADR and visitor-arrival data. We tell you which months bottom out, not which ones marketing departments push.
- Festivals & seasonal flags — verified against the official tourism authority and re-checked at every review. Where dates shift year-over-year (lunar calendars, religious festivals), we flag it explicitly.
- Updates — this guide is reviewed by destination.com editors at least once a year and any time conditions on the ground change materially. Send corrections and we'll log them publicly.
✓ Last verified August 9, 2026