In September, Florianopolis typically sees daytime highs of 21.7°C and overnight lows around 14.8°C. Compared to the annual average high of 24.4°C, September runs -2.7°C.
September in Florianopolis averages a daytime high of 21.7°C and an overnight low of 14.8°C.
September runs -2.7°C compared to Florianopolis's annual average high of 24.4°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 21.7°C and cooler evenings around 14.8°C.