In September, Cartago typically sees daytime highs of 27.9°C and overnight lows around 18.6°C. Compared to the annual average high of 27.8°C, September runs +0.1°C.
September in Cartago averages a daytime high of 27.9°C and an overnight low of 18.6°C.
September runs +0.1°C compared to Cartago's annual average high of 27.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 27.9°C and cooler evenings around 18.6°C.