Weather is probably a major factor when you plan your trip to Islas Secas, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and March, with an average temperature of 28°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Islas Secas are October, August, September and June, with each month seeing an average of 509 mm of rainfall.