In September, Cartagena typically sees daytime highs of 27.0°C and overnight lows around 18.9°C. Compared to the annual average high of 21.6°C, September runs +5.4°C.
September in Cartagena averages a daytime high of 27.0°C and an overnight low of 18.9°C.
September runs +5.4°C compared to Cartagena's annual average high of 21.6°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 27.0°C and cooler evenings around 18.9°C.