My brother stayed in the hostels at NIT Trichy for 4 years. As per his experience, the weather is mostly hot with heavy rainfall during certain seasons.

• The factor of adaptability is the first thing you will be required here. 
• Be prepared for waiting in a queue for a shower. You will be facing situations where you have to be very punctual.
• Hot water would also not be available during the winter season. 
• There are numerous shops available on campus where you can purchase items for daily necessities.
• Few things that you can pack for your hostel at NIT Trichy include: Bedsheets, Pillow covers, Towels and Clothes.
• If you are cautious about your skin, then I would suggest that you pack a sunscreen lotion as you can get sunburns at the hostel. 
• You can pack a pair of formal shirts and pants for formal occasions. Although, for classes, it is not mandatory to wear something formal.
• Additionally, you can carry along a kettle with you if you like eating Maggi or late-night snacks. 

So, if all these factors do not appear to be an issue for you, then your experience surely would be fine. You don't need to be concerned.