I visit goa once in 6 month as I stay near to goa ie. in belgaum which is in karntaka and is 120km from belgaum. The Goa is truly a year round destination, and although most tourists choose not to visit during the monsoon season, this time of year has much to offer.
The monsoon season begins around the month of June, when the hot temperatures of summer are cooled with an influx of clouds and rain. For the next three months, rain clouds will often fill the sky and temperatures will drop, but this moisture has its benefits. During this season, the countryside turns a lush green and plant life turns on its colors. There are two distinct tourist seasons during which certain areas will noticeably fill with visitors. These times of year occur during new year and xmus ie in Dec and January, and again during the month of May. You get lots of fun in a whole new place.