Weather will likely play an important role when you plan your trip to Eldorado, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually January and December, with an average temperature of 25°C, while the coldest months are July and June, with an average of 17°C. The rainiest months in Eldorado are October, January, May and December, with each month seeing an average of 224 mm of rainfall.