The small amount of precipitation is mainly concentrated in the winter. Rainfall during summer is a rare phenomenon and very often summers are completely dry without any precipitation.

On average the island receives approximately 16 days of precipitation between December and February. Sometimes, the hot sirocco wind prevails, causing dry and dusty conditions across the island.

Average precipitation in June and August is less than 0.5 millimetres (0.020 inches). It closely borders a tropical climate, with winter means of 18 °C (64 °F) and summer means of 25 °C (77 °F).