SANGLI & SOLAPUR
There are two other notable grape-growing regions in the state of Maharashtra, but both tend to supply their fruit to the wineries of Nashik and Pune. Their only cooperative venture has gone out of business except for the occasional customised crushing.
The first is Solapur, which, despite sharing a border with Pune, has fairly obvious climatic differences. The diurnal temperature range decreases and the average precipitation shows a slight increase (see the table below).

Solapur's climatic data
Source: Indian Meteorological Department, Ministry of Earth Sciences, Government of India
Despite a climate more akin to hot tropical, Sangli district, on the border of Maharashtra with Karnataka, has no effective diurnal temperature range, and so its fruits are plusher and richer in the red wines.
It is worthwhile comparing annual rainfall data relevant to the regions of Nashik, Pune, Sangli and Solapur for the period 2008–2013. The Indian Meteorological Department’s statistics show a wide variation across both regions and years, supporting the hypothesis that provenance and vintage do play a role in determining wine quality in sub-tropical climates.

Annual rainfall, 2009–2013, Maharashtra
Source: Author’s compilation from the Indian Meteorological Department database, Ministry of Earth Sciences, Government of India