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 Esteli: The hottest months are usually April and March, with an average temperature of 24°C, while the coldest months are January and December, with an average of 22°C. The rainiest months in Esteli are October, May, September and June, with each month seeing an average of 351 mm of rainfall.