Rainy Season in Jaipur
The average low (L) and high (H) temperatures for the rainy months are:
June - 39 C (H), 27 C (L)
July - 33 C (H), 26 C (L)
Aug - 32 C (H), 25 C (L)
Sept - 33 C (H), 24 C (L)
July and August receive the heaviest rainfall.
This year, the peak hot season came earlier than usual - while May is supposed to be the hottest month, this year it was in April that temperatures crossed the 45 degree celcius mark, and May was not as hot as it used to be. The later part of May got a relief from heat wave conditions due to the slight drizzles of isolated rain brought on by dust storms, thunderstorms and squalls. Though the average temperature dropped by few degrees, there was a rise in humidity and moisture levels, thus making conditions just as worst.
Weather in Jaipur
As seen in the chart, the coldest months are December, January and February; and the hottest months are April, May and June. Apart from this, it is also prudent to check the rainy season – which starts in June and ends in September, with the months of July and August experiencing the heaviest rainfall.
These statistics are compiled from the previous years' averages. But in this age of erratic weather believed to have been brought about by global warming, Jaipur too has been witnessing ever changing climatic conditions. Some locals even say that they had just experienced the coldest and longest winter of their life in Jaipur at the beginning of this year.
Therefore it is a good idea to check updated forecasts for the weather at this website: http://www.wunderground.com/global/stations/42348.html
Weather conditions in Jaipur
The summers are very very hot and dry. When I was there the temperatures revolved around 45 C. But since there is no humidity (or very less of it) you won't sweat much as in a tropical place. But the downside is that you will simply need to drink lots and lots of water - about 10 times as much as you would normally. I had to quench my thirst with 2 glasses of water or juice - anything within handreach - after approximately every 20 minutes.
The winters are equally harsh with extremities reaching near freezing temperatures. Most houses or almost all don't have heaters and so even while indoors, people have to rely on several layers of winter clothing to keep warm in the day and sleep under stone-heavy blankets at night.