In September, Mostar typically sees daytime highs of 23.2°C and overnight lows around 11.5°C. Compared to the annual average high of 16.3°C, September runs +6.9°C.
September in Mostar averages a daytime high of 23.2°C and an overnight low of 11.5°C.
September runs +6.9°C compared to Mostar's annual average high of 16.3°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 23.2°C and cooler evenings around 11.5°C.