Weather is so hot

Why is the weather so hot. Early of this month is was raining everyday, and now it is not raining anymore and it is so hot?

Everyday when I reach home, I need to change to spaghetti T or singlet and short pants. I can't wear T-shirt nowadays. At night it is not easy to sleep at this hot weather. Was wondering is it my room that is very hot but when I slide my curtains and feel from the window, it is not cool either, no wind is blowing thru.

I feel like I am living at a desert now.