Weather is probably a major factor when you plan your trip to Ambatolampy, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually October and November, with an average temperature of 18°C, while the coldest months are July and June, with an average of 13°C. The rainiest months in Ambatolampy are January, February, December and March, with each month seeing an average of 353 mm of rainfall.