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 Sáchica: The hottest months are usually January and February, with an average temperature of 12°C, while the coldest months are August and January, with an average of 12°C. The rainiest months in Sáchica are April, November, March and May, with each month seeing an average of 212 mm of rainfall.