What is the cheapest time to visit Thailand?

The green (rainy) season from May to October is by far the cheapest, with flights, hotels and tours all dropping sharply - September and October are the very lowest. You trade some reliability for the savings: expect short, heavy afternoon downpours rather than all-day rain, and lush, quiet scenery in return. May and June are the best-value months that still see plenty of sun between showers.

When is the rainy (monsoon) season in Thailand?

The southwest monsoon runs roughly May to October across most of Thailand, peaking in September and October. Rain usually comes as intense afternoon bursts rather than constant drizzle. One regional twist: the Gulf islands (Koh Samui, Koh Phangan, Koh Tao) run on a different cycle and are often driest around June-August, then wettest in November, so they can be a smart rainy-season swap.

What months should you avoid in Thailand?

September and October see the heaviest monsoon rain on the mainland and the Andaman coast (Phuket, Krabi), with the highest chance of a washed-out day and some island ferry disruption. April is the other one to weigh up - it's the hottest month, regularly topping 35°C inland - though the Songkran festival makes it a favourite for many. For the surest weather, choose November to February.

Is Thailand good to visit in the summer?

Summer (June to August) falls in the green season, so expect hot, humid days with short daily downpours - but rarely a total washout, and the landscapes are at their lushest. Prices are low outside the July-August European-holiday bump, and the crowds are thin. If you want beach reliability in summer, head to the Gulf islands, which are often at their driest then.

How far in advance should I book a trip to Thailand?

For the November-February high season - and especially the Christmas-New Year peak and Songkran in April - book flights three to five months ahead and lock in island hotels early, as the best-value places sell out. For the green season, four to six weeks is usually enough. Search flights to Bangkok (BKK or Don Mueang) and Phuket to compare the main gateways.

What is the weather like in Thailand year-round?

Thailand is hot and tropical all year, with three seasons: cool and dry (November-February, ~30-32°C and comfortable), hot and dry (March-May, 34-36°C inland), and wet (June-October, humid with monsoon rain). Bangkok and the interior are hottest; the far south is more consistently humid; and the northern hills (Chiang Mai) are noticeably cooler in the winter months.

Month by monthThailand2026

The Best Time to Visit Thailand

Best: November–February (cool & dry)Cheapest: May–October (green season)

Photo: Tee-12838 · CC BY-SA 4.0

Thailand really has three seasons - cool, hot and wet - and the 'best' one depends on whether you want perfect beach weather, the lowest prices, or a festival. Here's every month rated for weather, crowds and cost, so you pick the trip you actually want.

Updated 6 July 2026

In Brief

When is the best time to visit Thailand?

The best time to visit Thailand is the cool, dry season from November to February - warm, sunny days, low humidity and calm seas, ideal for both Bangkok and the beaches. It's peak season, so December and January are busy and pricey. March to May is hot and dry (great value, but 35°C+), while the green season from June to October brings cheaper prices and short daily downpours, with the heaviest monsoon rain in September and October.

Best time to go

November–February (cool & dry)

Cheapest time

May–October (green season)

When to avoid

September–October (heaviest monsoon)

Thailand climate at a glance

Avg daytime high (°C / °F) · rainfall · season

Peak seasonGreatShoulder / valueOff-peakmore drops = wetter

32°90°F
Jan
33°91°F
Feb
34°93°F
Mar
35°95°F
Apr
34°93°F
May
33°91°F
Jun
33°91°F
Jul
32°90°F
Aug
32°90°F
Sep
32°90°F
Oct
32°90°F
Nov
31°88°F
Dec

Find your month

Every month in Thailand is rated for weather, crowds and price. Drag the slider to find your sweet spot — the greener the month, the better value the trip.

Sweet spot — best value

Cheapest window: May–October (green season)

May: $ · Low crowds · 34°C, hot, humid

See May hotels

Flights to ThailandCompare fares for your month on Trip.com Hotels in ThailandBook earlier for peak-season dates Things to doTours & tickets in Thailand

Thailand month by month

Every month rated for weather, crowds and price, so you can match the trip to the month.

Peak seasonGreatShoulder / valueOff-peak

Month	Weather	Crowds	Price	What it's like
Jan	32°C, dry, sunny	Peak	$$$	The heart of the cool, dry season - the best all-round weather of the year, with packed beaches and top prices.
Feb	33°C, dry	Peak	$$	Still cool by Thai standards, dry and reliably sunny; crowds ease slightly from the New Year peak.
Mar	34°C, hot, dry	High	$$	Heat builds and humidity rises, but skies stay dry and clear; good value as high season winds down.
Apr	35°C, very hot	High (Songkran)	$$	The hottest month - stifling inland - but Songkran (Thai New Year) mid-month is a nationwide highlight worth timing for.
May	34°C, hot, humid	Low	$	The monsoon arrives with afternoon downpours; hot and humid, but green, quiet and cheap between the rain.
Jun	33°C, humid, showers	Low	$	Green season in full swing - short, heavy showers then sun, with low-season prices across the country.
Jul	33°C, humid, showers	Moderate	$$	Rain comes in bursts rather than all day; European summer holidays lift prices a little, but it's still good value.
Aug	32°C, humid, wet	Moderate	$$	Wetter than July but rarely a washout; lush landscapes and quiet temples reward the flexible traveller.
Sep	32°C, wet	Low	$	The peak of the monsoon - the wettest month, with the risk of prolonged rain and some island ferries disrupted.
Oct	32°C, wet, easing	Low	$	Still very wet early on, drying out towards month's end; the cheapest window, but the least reliable weather.
Nov	32°C, drying, pleasant	High	$$	The rain clears and the cool, dry season begins - one of the best months to go, with fresh green scenery.
Dec	31°C, cool, dry	Peak	$$$	Cool, dry and sunny - peak beach season is in full swing, and prices spike hard over the Christmas-New Year holidays.

Time it right: Thailand's seasonal highlights

Cool dry season (beach weather)
November–February
The prime window for the islands and Bangkok alike: sunny days, calm seas and low humidity across most of the country.
Songkran (Thai New Year)
13–15 April
The world's biggest water fight takes over the whole country for three days - joyful chaos, but book transport and hotels early.
Loi Krathong & Yi Peng
November (full moon)
Thousands of lanterns and floating candles light up the rivers and skies, most spectacularly in Chiang Mai.
Green-season deals
June–October
The rainy months bring the year's lowest prices, lush landscapes and thin crowds - just build flexibility around the showers.

Best time to visit Thailand: FAQ

The timing questions travelers ask most before booking.

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Where to go, by month →

See the best destination for every month

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The Best Time to Visit Thailand

When is the best time to visit Thailand?

Thailand climate at a glance

Thailand month by month

Time it right: Thailand's seasonal highlights

Cool dry season (beach weather)

Songkran (Thai New Year)

Loi Krathong & Yi Peng

Green-season deals

Best time to visit Thailand: FAQ

Continue Planning Your Trip

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When is the best time to visit Thailand?

Thailand climate at a glance

Thailand month by month

Time it right: Thailand's seasonal highlights

Cool dry season (beach weather)

Songkran (Thai New Year)

Loi Krathong & Yi Peng

Green-season deals

Best time to visit Thailand: FAQ

What is the cheapest time to visit Thailand?expand_more

When is the rainy (monsoon) season in Thailand?expand_more

What months should you avoid in Thailand?expand_more

Is Thailand good to visit in the summer?expand_more

How far in advance should I book a trip to Thailand?expand_more

What is the weather like in Thailand year-round?expand_more

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