The best time to visit Myanmar is between November and February. During these months it rains least (if at all in places) and it is not so hot. March to May brings intense heat. At this time, the daily temperatures in Yangon (Rangoon) often reach 40ºC (104ºF), while areas around Bagan and Mandalay go a few digits higher. The cool hill towns of Shan State offer relief from the heat, though.
The southwest monsoon starts between mid-May and mid-June, bringing frequent rains that dunk the country through till October, peaking from July to September. The dry zone (between Mandalay and Pyay) gets the least rain, though roads anywhere (and particularly in the delta region) can become impassable. Rakhaing State bears the full force of the rains – often exceeding 195in (495cm) of rain annually.