In September, Saint-Marc typically sees daytime highs of 31.5°C and overnight lows around 24.9°C. Compared to the annual average high of 30.3°C, September runs +1.2°C.
September in Saint-Marc averages a daytime high of 31.5°C and an overnight low of 24.9°C.
September runs +1.2°C compared to Saint-Marc's annual average high of 30.3°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 31.5°C and cooler evenings around 24.9°C.