If you're looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Hsipaw: The hottest months are usually April and March, with an average temperature of 25°C, while the coldest months are January and February, with an average of 18°C. The rainiest months in Hsipaw are August, July, June and September, with each month seeing an average of 297 mm of rainfall.