If you're reading this in bed, you may want to stay tucked in a little longer.

Sydney will wake up to its coldest morning in four years today, reaching a low of 5.5 degrees.

Rug up: A chilly start to August means gloves and scarves are still a must. Credit:Jonathan Carroll

It's a chilly start to the day after a surprisingly warm week, which hosted the warmest three consecutive days in any July for the city, topped off with a balmy 25 degrees on Thursday.

Brett Dutschke, senior meteorologist with Weatherzone, said gloves and scarves would be a must for some this morning.