In December, Colombo typically sees daytime highs of 25.5°C and overnight lows around 15.5°C. Compared to the annual average high of 22.9°C, December runs +2.5°C.
December in Colombo averages a daytime high of 25.5°C and an overnight low of 15.5°C.
December runs +2.5°C compared to Colombo's annual average high of 22.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 25.5°C and cooler evenings around 15.5°C.