If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Marinilla: The hottest months are usually August and September with an average temp of 63°F, while the coldest months are January and July with an average of 63°F. The rainiest months in Marinilla are April, May, October, and November, with each month seeing an average of 17 inches of rainfall.