Weather is probably a major factor when you plan your trip to Petite-Ile, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and January, with an average temperature of 26°C, while the coldest months are July and August, with an average of 21°C. The rainiest months in Petite-Ile are January, February, March and December, with each month seeing an average of 245 mm of rainfall.