Weather will likely play an important role when you plan your trip to Gorgona Island, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April, with an average temperature of 25°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Gorgona Island are May, June, January and December, with each month seeing an average of 951 mm of rainfall.