Katunayaka Precipitation: Average Monthly Rainfall and Snowfall

This graph shows the average amount of rainfall per month in Katunayaka (Gampaha District). The numbers are calculated over a 30-year period to provide a reliable average.

• A lot of rain (rainy season) falls in the months: April, May, June, July, August, September, October, November and December.
• On average, October is the wettest month with 345 mm of precipitation.
• On average, January is the driest month with 53 mm of precipitation.
• The average amount of annual precipitation is 2417 mm.