If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Moyobamba: The hottest months are usually September and October with an average temp of 70°F, while the coldest months are July and June with an average of 68°F. The rainiest months in Moyobamba are March, April, February, and December, with each month seeing an average of 13 inches of rainfall.