Post-monsoon and winter with proper preparations. Sep-March is the ideal time to visit Belgaum.
Summers are harsh in Belgaum and it may reach upto 40 degree Celsius. The place is dry and would not be suitable to visit at this time of the year.
From June to September, it is monsoon in Belgaum. This region experiences continuous rainfall during the monsoon season, thus it is better to avoid this season to travel to the place. However, the place is beautiful during this season.
The winters here are from November to February, and the temperature drops to around 9 degrees; with proper clothing post-monsoon and winters are best to travel to this beautiful place.