When is the best time to visit Thailand?

The best time to visit Thailand is January to February and December: all 4 of the cities we cover are at their best then. By city: Bangkok, January to February and November to December; Phuket, January to March and December; Chiang Mai, January to February and November to December; Krabi, January to March and December. Cities marked weather data only have a pick based on temperature and rain alone, not yet checked against crowds or local seasons.

When is the hottest month in Thailand?

It depends on the city. The hottest month is March in Phuket and Krabi; April in Bangkok and Chiang Mai (average daytime highs, 2019-2024).

When is the rainy season in Thailand?

The wettest month, counted in days with at least 1 mm of rain, is August in Bangkok and Chiang Mai; October in Phuket and Krabi. Open the city guide for the full month-by-month table.

Is there a month that is good everywhere in Thailand?

Yes: January to February and December, when all 4 cities we cover are at their best.

Best Time to Visit Thailand: Month by Month, City by City

Best months by city

City	Best months	Hottest month	Wettest month
Bangkok	January to February and November to December	April, 94°F (34°C)	August, about 28 rainy days
Phuket	January to March and December (weather data only)	March, 91°F (33°C)	October, about 28 rainy days
Chiang Mai	January to February and November to December (weather data only)	April, 96°F (36°C)	August, about 30 rainy days
Krabi	January to March and December (weather data only)	March, 94°F (34°C)	October, about 28 rainy days

Each city name opens its own month-by-month table. Heat is the average daytime high; rainy days are days with at least 1 mm of rain. Cities marked "weather data only" have not yet been checked against crowds, closures or local seasons.

Every month at a glance

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bangkok	Best	Best	Okay	Okay	Okay	Okay	Okay	Avoid	Avoid	Okay	Best	Best
Phuket	Best	Best	Best	Okay	Okay	Okay	Okay	Okay	Okay	Avoid	Avoid	Best
Chiang Mai	Best	Best	Okay	Avoid	Okay	Okay	Okay	Avoid	Okay	Okay	Best	Best
Krabi	Best	Best	Best	Okay	Avoid	Okay	Okay	Okay	Okay	Avoid	Avoid	Best

Best = the city's best months. Avoid = very hot, very cold or among the wettest months. Okay = neither. Hover or tap a cell for the reason.

Thailand month by month

January: At its best in Bangkok, Phuket, Chiang Mai and Krabi (4 of 4).
February: At its best in Bangkok, Phuket, Chiang Mai and Krabi (4 of 4).
March: At its best in Phuket and Krabi (2 of 4).
April: None of the cities we cover is at its best this month. Worth avoiding: Chiang Mai (very hot, 96°F (36°C)).
May: None of the cities we cover is at its best this month. Worth avoiding: Krabi (among the wettest, 27 rainy days).
June: None of the cities we cover is at its best this month.
July: None of the cities we cover is at its best this month.
August: None of the cities we cover is at its best this month. Worth avoiding: Bangkok (among the wettest, 28 rainy days); Chiang Mai (among the wettest, 30 rainy days).
September: None of the cities we cover is at its best this month. Worth avoiding: Bangkok (among the wettest, 28 rainy days).
October: None of the cities we cover is at its best this month. Worth avoiding: Phuket (among the wettest, 28 rainy days); Krabi (among the wettest, 28 rainy days).
November: At its best in Bangkok and Chiang Mai (2 of 4). Worth avoiding: Phuket (among the wettest, 27 rainy days); Krabi (among the wettest, 27 rainy days).
December: At its best in Bangkok, Phuket, Chiang Mai and Krabi (4 of 4).

Plan your trip

Open a city guide for tours, hotels and what to do there:

See today's travel advisory for Thailand (government warnings, checked every 2 minutes).

Thailand: common questions

When is the best time to visit Thailand?: The best time to visit Thailand is January to February and December: all 4 of the cities we cover are at their best then. By city: Bangkok, January to February and November to December; Phuket, January to March and December; Chiang Mai, January to February and November to December; Krabi, January to March and December. Cities marked weather data only have a pick based on temperature and rain alone, not yet checked against crowds or local seasons.
When is the hottest month in Thailand?: It depends on the city. The hottest month is March in Phuket and Krabi; April in Bangkok and Chiang Mai (average daytime highs, 2019-2024).
When is the rainy season in Thailand?: The wettest month, counted in days with at least 1 mm of rain, is August in Bangkok and Chiang Mai; October in Phuket and Krabi. Open the city guide for the full month-by-month table.
Is there a month that is good everywhere in Thailand?: Yes: January to February and December, when all 4 cities we cover are at their best.

How we worked this out

Temperatures and rainy days come from Open-Meteo ERA5 records for 2019-2024 for each city. Where a city's best months were checked by hand against crowds and local seasons, that is the pick shown; otherwise the pick is based on weather alone and is marked. Weather changes from year to year, so treat this as a planning guide, not a forecast.