Sri Lanka is a perfect vacation destination year-round. Located in the tropics zone, the country is significantly influenced by its monsoon climate. The weather in Sri Lanka is detected by two monsoon seasons which bring rain to Sri Lanka. 

from:
1. May to September – Monsoon affecting the South and West Coasts. 
2. October to February - Monsoon impacting the North and East Coasts.

During these monsoon periods, it can get heavily rainy. However, the rest of the year is typically sunny and dry. Temperatures are fairly constant year-round, with coastal areas experiencing temperatures between 27-30°C and the highlands regions averaging 12-19°C.

If you're planning a trip to Sri Lanka, the ideal times to visit are from:

1. November to April for the South and West Coasts. 
2. May to September the North and East Coasts.