If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Nueva Loja: The hottest months are usually September and October with an average temp of 76°F, while the coldest months are July and August with an average of 74°F. The rainiest months in Nueva Loja are April, May, March, and June, with each month seeing an average of 23 inches of rainfall.