Weather is probably a major factor when you plan your trip to Santa Elena, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and May with an average temp of 82°F, while the coldest months are January and December with an average of 73°F. The rainiest months in Santa Elena are September, June, August, and October, with each month seeing an average of 9 inches of rainfall.