Curaçao has a tropical savannah climate (Köppen climate classification As) with a dry season from January to September and a wet season from October to December.[32] The temperatures are relatively constant with small differences throughout the year. The trade winds bring cooling during the day and the same trade winds bring warming during the night. The coldest month is January with an average temperature of 26.5 °C (80 °F) and the warmest month is September with an average temperature of 28.9 °C (84 °F). The year's average maximum temperature is 31.2 °C (88 °F). The year's average minimum temperature is 25.3 °C (78 °F).
Curaçao lies outside the hurricane belt, but is still occasionally affected by hurricanes, as for example Hazel in 1954, Anna in 1961 Felix in 2007 and Omar in 2008. A landfall of a hurricane in Curaçao has not occurred since the United States National Hurricane Center started tracking hurricanes. Curaçao has, however, been directly affected by pre-hurricane tropical storms several times; the latest which did so were Tomas in 2010, Cesar in 1996, Joan-Miriam in 1988, Cora and Greta in 1978, Edith and Irene in 1971 and Francelia in 1969. The latest, Tomas, brushed Curaçao as a tropical storm, dropping as much as 265 mm (10.4 in) of precipitation on the territory, nearly half of the annual precipitation in one day.[33] This made Tomas one of the wettest events in the island's history,[34] as well as one of the most devastating; its flooding killed two people and caused over NAƒ60 million (US$28 million) in damage.[35][36]