In September, Parnaiba typically sees daytime highs of 32.7°C and overnight lows around 23.5°C. Compared to the annual average high of 31.3°C, September runs +1.4°C.
September in Parnaiba averages a daytime high of 32.7°C and an overnight low of 23.5°C.
September runs +1.4°C compared to Parnaiba's annual average high of 31.3°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 32.7°C and cooler evenings around 23.5°C.