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 Escazu: The hottest months are usually March and April, with an average temperature of 20°C, while the coldest months are January and February, with an average of 19°C. The rainiest months in Escazu are October, June, September and August, with each month seeing an average of 650 mm of rainfall.