Weather is probably a major factor when you plan your trip to Dawei, but bear in mind that cheaper options are usually available when the weather isnโt as good. The hottest months are usually March and April, with an average temperature of 26ยฐC, while the coldest months are January and February, with an average of 26ยฐC. The rainiest months in Dawei are July, August, June and September, with each month seeing an average of 887 mm of rainfall.