In December, Montevideo typically sees daytime highs of 26.1°C and overnight lows around 15.8°C. Compared to the annual average high of 21.1°C, December runs +5.1°C.
December in Montevideo averages a daytime high of 26.1°C and an overnight low of 15.8°C.
December runs +5.1°C compared to Montevideo's annual average high of 21.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 26.1°C and cooler evenings around 15.8°C.