Good weather's definitely a plus when you're discovering new places, so here's a little information that may be helpful: The hottest months are usually January and December with an average temp of 75°F, while the coldest months are July and June with an average of 61°F. The rainiest months in Municipio Yacuíba are February, December, January, and March, with each month seeing an average of 9 inches of rainfall.