In September, Riobamba typically sees daytime highs of 17.6°C and overnight lows around 4.3°C. Compared to the annual average high of 16.9°C, September runs +0.7°C.
September in Riobamba averages a daytime high of 17.6°C and an overnight low of 4.3°C.
September runs +0.7°C compared to Riobamba's annual average high of 16.9°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 17.6°C and cooler evenings around 4.3°C.