In October, Niteroi typically sees daytime highs of 26.9°C and overnight lows around 19.3°C. Compared to the annual average high of 27.8°C, October runs -0.9°C.
October in Niteroi averages a daytime high of 26.9°C and an overnight low of 19.3°C.
October runs -0.9°C compared to Niteroi's annual average high of 27.8°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 26.9°C and cooler evenings around 19.3°C.