There are three seasons in Myanmar - the hot season, the rainy season and the cold season. Each season lasts about four months. The hot season begins in February and ends in May. The rainy season is from June to September and the cold season starts in October and ends in January.
TIMES TO VISIT AND REGIONAL VARIATIONS
The most comfortable time to visit is during the cool season, which is also the least humid time of year and has the clearest air – however, this is also the peak tourist season. If you can put up with the heat and/or rain, then you will find it easier (and often cheaper) to book accommodation outside the cool season, and there will be less crowds at popular destinations.
From February until the beginning of the rainy season, much of the country (particularly north of Yangon) can be dusty and hazy, sometimes hindering long-distance views.
Myanmar is a large country and temperatures can vary significantly. As a general rule, temperatures and humidity become lower at higher altitudes; in Chin State in the west and parts of Shan State in the east, temperatures can get close to freezing, and in the Himalayan far north they may drop below zero.
Monsoon rains are the most persistent in Yangon and the south and west; in the center of the country, around Mandalay and Bagan, showers will generally be more sporadic in the rainy season (and you are likely to experience more sunshine).
Below is a table showing average temperatures, humidity and sunlight hours for Yangon.
