Coming from Singapore you'll likely feel the cold a lot more than those who are used to it. Especially during the first winter. Prepare for some cold, wind and snow. If you are coming in the winter months, you'll need some warm sweaters, hat, gloves, carf, and a good winter coat. Also some warm shoes or boots. I always find that dressing in layers helps keep me warm. So I'll wear an undershirt or a t-shirt under my sweater.

What is also shocking is how hot you'll feel once you step inside buildings so the layers also help so you can get comfortable indoors.

I've lived in Malta for the past 3.5 years and in New Zealand and Florida before that so I'm really not looking forward to the winter but I'm in Ticino so it shouldn't be as bad as in Zurich. Best of luck to you! I'm sure you'll miss Singapore. It's a great place. I've spent a lot of time there.