Beautiful Roses, Rose Buds, Beautiful Unusal Flowers, Pink Roses Flowers, Beautiful Flowers, Roses And Flowers nature, morning, water drops The average daily temperature for this month in Colombo is 27°C (81°F) which can reach highs of 30°C ( 86°F ) or drop to 23°C ( 73°F ). The average temperature of the sea is 28°C ( 83°F ). The average amount of rainfall seen is 168 mm. There is an average of 7 hours of sunshine each day in Colombo.