In September, Rosarito typically sees daytime highs of 25.2°C and overnight lows around 15.7°C. Compared to the annual average high of 21.4°C, September runs +3.8°C.
September in Rosarito averages a daytime high of 25.2°C and an overnight low of 15.7°C.
September runs +3.8°C compared to Rosarito's annual average high of 21.4°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 25.2°C and cooler evenings around 15.7°C.