Have been to Singapore many time and a great place for shopping it is, especially if you want to buy a cheap watch, especially "copy" watches but here's a warning, watch out for fake copy watches. A friend who was travelling with us bought a "copy" gold Gucci watch. She wore it for years (until the battery eventually died) but the "gold" wore off in a couple of months and the brand name on the watch face was "GUCI"😄
I don't mind the heat. I spent six weeks there in 1970 while doing my Nasho. That was after ten weeks living in tents in Indonesian Borneo - Kalimantan Barat - bang on the equator near a place called Pontianak.
Here's a pic of my Singapore accomodation, occupied mostly by Poms and Kiwis. No aircon in those days.