In September, Trelew typically sees daytime highs of 18.1°C and overnight lows around 3.4°C. Compared to the annual average high of 21.0°C, September runs -2.9°C.
September in Trelew averages a daytime high of 18.1°C and an overnight low of 3.4°C.
September runs -2.9°C compared to Trelew's annual average high of 21.0°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 3.4°C.