In September, Carlsbad typically sees daytime highs of 25.3°C and overnight lows around 16.1°C. Compared to the annual average high of 21.2°C, September runs +4.1°C.
September in Carlsbad averages a daytime high of 25.3°C and an overnight low of 16.1°C.
September runs +4.1°C compared to Carlsbad's annual average high of 21.2°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 25.3°C and cooler evenings around 16.1°C.