There are always advantages to every travel situation in life, and this is never more true than when you are planning a trip to India.
Never forget that this vast country is, geographically, a sub-continent. From the snowy peaks of the Himalayas in the north, through the deserts to the west, down to the steamy heat of the south, there is a huge range of climatic zones. So whenever you plan your journey, there will always be the weather factor to be considered. Given the size of the country, there is no single ‘ideal’ time to visit India.
For example, if you wish to travel to Ladakh, high up in Kashmir, you can only do so during the hot summer months, when the snow melts in the passes, and the road and airport become, once again, accessible.