Hot weather but monsoon occurs from the mid-June thus giving a relief to the scorching sun. Humidity level is high during this period and the sky in most days is partially covered with clouds. It may not be the best time but if you are visiting in June then sun protection and carrying rain wear are a must.
Thanks for the information to make my travel easier. So it's very comfortable for me to know about the hyderabad city and train timings. If any budget cost is available please tell me through this e-mail address.