Florianópolis experiences a warm humid subtropical climate , falling just short of a true tropical climate. The seasons of the year are distinct, with a well-defined summer and winter, and characteristic weather for autumn and spring. Due to the proximity of the sea, the relative humidity of the atmosphere is 80% on average.
The maximum temperatures of the hottest month varies from 25 °C (77 °F) to 38.8 °C (101.8 °F) and the minimum temperatures are from 6 °C (43 °F) to 11 °C (52 °F). The lowest temperature ever recorded was 0.7 °C (33.3 °F) in September 1980 while the highest temperature ever recorded was 38.8 °C (101.8 °F) in February 1973.
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