In July, Dehiwala-Mount Lavinia typically sees daytime highs of 29.6°C and overnight lows around 24.6°C. Compared to the annual average high of 30.4°C, July runs -0.8°C.
July in Dehiwala-Mount Lavinia averages a daytime high of 29.6°C and an overnight low of 24.6°C.
July runs -0.8°C compared to Dehiwala-Mount Lavinia's annual average high of 30.4°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 29.6°C and cooler evenings around 24.6°C.