Metropolitan City of Cagliari the warmest month with an average temperature of that of about . African anticyclone activity can cause heat waves starting in June. From mid-June to mid-September rain is rare and appears in afternoon storms. The rainy season starts in September, but the first cold days come in December, usually the wettest month. Winds are frequent, especially the mistral and sirocco; in Summer days a marine sirocco breeze ("s'imbattu") lowers the temperature and the humidity. On the surrounding mountains, the climate is very different with plentiful average rainfall, cold winters, and mild warm summers (Csb in the Köppen climate classification). As
Sirocco (parrot) kakapo. This extends to the mating ritual of 'booming': Sirocco booms in the presence of humans, rather than female kakapo. Sirocco is therefore seen as unlikely to be successful when it comes to breeding. However, his affinity to human beings means he has become an effective advocate for the kakapo species. As Codfish Island, a protected sanctuary, is closed to the public, this has involved Sirocco travelling away from his home. Since 2006 he has regularly appeared on Ulva Island as part of a 'kakapo encounter'; then in September 2009 he travelled to Auckland Zoo where he was visited by