In December, Mariano typically sees daytime highs of 29.3°C and overnight lows around 21.8°C. Compared to the annual average high of 30.4°C, December runs -1.1°C.
December in Mariano averages a daytime high of 29.3°C and an overnight low of 21.8°C.
December runs -1.1°C compared to Mariano's annual average high of 30.4°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 29.3°C and cooler evenings around 21.8°C.