With the heatwave hitting Sydney and parts of eastern NSW expected to drive temperatures to 39C for parts of Sydney's west today, people have been warned to be cautious of heat-related harms.

In short:

Those in Sydney and eastern NSW have been advised to take precaution as this week’s heatwave is tipped to continue.

According to forecasts, a maximum temperature of 33 degrees Celsius is predicted for Sydney’s coast, while up to 39C is on the cards for pockets of Greater Western Sydney.

What’s next?

A cool change is expected for the state later this week, bringing temperatures down.