In December, Plymouth typically sees daytime highs of 28.2°C and overnight lows around 22.4°C. Compared to the annual average high of 29.3°C, December runs -1.1°C.
December in Plymouth averages a daytime high of 28.2°C and an overnight low of 22.4°C.
December runs -1.1°C compared to Plymouth's annual average high of 29.3°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 28.2°C and cooler evenings around 22.4°C.