If you're hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Bukittinggi: The hottest months are usually May and June, with an average temperature of 22°C, while the coldest months are July and August, with an average of 22°C. The rainiest months in Bukittinggi are November, April, December and October, with each month seeing an average of 433 mm of rainfall.