In September, Cabo Frio typically sees daytime highs of 24.9°C and overnight lows around 18.6°C. Compared to the annual average high of 26.7°C, September runs -1.8°C.
September in Cabo Frio averages a daytime high of 24.9°C and an overnight low of 18.6°C.
September runs -1.8°C compared to Cabo Frio's annual average high of 26.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 24.9°C and cooler evenings around 18.6°C.