I lived in the largest city in Gujarat state, Ahmedabad, for a few months in 2014 and took a road trip from Ahmedabad to Diu that summer. I can tell you this: I only wish I had had time to explore more of the state. At the time, people didn’t see much more to visit besides Gandhi’s Sabarmati Ashram, but I saw loads of tourism potential if things were planned right.
In 2017, Ahmedabad became India’s first UNESCO World Heritage City, and in 2019 the state of Gujarat became one of the Lonely Planet’s “Best In Travel” regions.
The sweet spot to visit off the dry heat and the monsoon season is between November and February. However, if you want to visit during a special occasion, October 2, 2019, marks the 150th anniversary of Gandhi’s birth (a Gujarat state native), and major celebrations are planned.