Did you note what the maximum temperature was that day? I am a bit surprised that warm temperatures in India can affect temporary battery performance. Warmer weather, of course, shortens battery life (major problem for electrical vehicles in India) but you seem to be experiencing a temporary problem. Warm weather causes battery fluids to evaporate, but again that is a permanent effect and I very much doubt it can happen in 15 minutes.
I have used my Fujifilm AV100 for hours together in hot weather when visiting a tourist site with no issues at all. At other times I have experienced a very similar problem to yours even when in an air conditioned room! I put it down to a combination of cheap camera and old batteries. What camera/batteries do you use that causes this problem?
One trick that sometimes works for me is to remove and replace the batteries.