Curacao Temperature In Curacao, for a period of record spanning 1971 – 2009 average annual 2m air temperature = 27.8 °C warmest year on record = 28.7 °C in 1999 coldest year on record = 27 °C in 1974 warmest month on average = 28.9 °C in September warmest month on record = 28.7 °C …