In September, Montero typically sees daytime highs of 30.8°C and overnight lows around 19.3°C. Compared to the annual average high of 29.6°C, September runs +1.2°C.
September in Montero averages a daytime high of 30.8°C and an overnight low of 19.3°C.
September runs +1.2°C compared to Montero's annual average high of 29.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 30.8°C and cooler evenings around 19.3°C.