Most of Myanmar enjoys a tropical climate. Temperatures in Mandalay, in central Myanmar is average 68 °F (20 °C) in January and 85 °F (29 °C) in July. Temperatures in Yangon, on the delta is average 77 °F (25 °C) in January and 80 °F (27 °C) in July. Myanmar has three seasons namely rainy or monsoon, cool, and hot.
The rainy season lasts from late May to October. Rainfall varies greatly from region to region. For example, the Mandalay area receives only about 30 inches (76 cm) of rain a year. The Taninthayi Coast, however, is drenched with over 200 inches (510 cm). The heavy rainfall is brought by seasonal winds called monsoons, which sweep North-Eastward from the Indian Ocean.
The cool season runs from late October to mid-February. Temperatures are lowest at this time, though the climate remains tropical throughout most of Myanmar.
The hot season lasts from late February to about mid-May. During this season, temperatures often top 100 °F (38 °C) in many parts of Myanmar.