In January, Dehiwala-Mount Lavinia typically sees daytime highs of 30.7°C and overnight lows around 22.3°C. Compared to the annual average high of 30.4°C, January runs +0.3°C.
January in Dehiwala-Mount Lavinia averages a daytime high of 30.7°C and an overnight low of 22.3°C.
January runs +0.3°C compared to Dehiwala-Mount Lavinia's annual average high of 30.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 30.7°C and cooler evenings around 22.3°C.