The soth west Monsoon and the North East Monsoon affect the weather pattern in sri lanka.
The rain fall, winds and the sea conditions depend on timely arrival of the monsoons.
During this period there are heavy rains that fill the tanks, reservoirs and wete ways.
As a result, agricalture prospers, electricity supplies are available without anyinterruptieon, factories run all 24 horse and the final resulf economy. Howerer the fisheries industry suffers as the sea becomes rough and sea- going is made difficult.
The south west Monsoon begins from end of April and prfvails until end of August.
The sothern, Western and the North Western provinces come under the south west Monsoon.The Western part of the centval province feels the effects of the south west Monsoon. North East Monsoon is generally from mid october to mid March.

Cyeclones teke place When there is a drop in the atmospheric pressure.