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 Moyobamba: The hottest months are usually September and October, with an average temperature of 21°C, while the coldest months are July and June, with an average of 20°C. The rainiest months in Moyobamba are March, April, February and December, with each month seeing an average of 324 mm of rainfall.