Hottest Day in Sydney for 80 Years

Sydney has endured its hottest day in 80 years with the high in Penrith reaching 47.3 degrees.

Beachgoers are seen on Bondi beach in Sydney. Source: AAP

A severe fire danger rating has been issued for the greater Sydney region (Sunday) while much of the rest of the state has a "very high" rating.

The NSW Rural Fire Service has urged residents to prepare their bushfire plans.

Meanwhile, Bureau of Meteorology spokesman Andrew Haigh has told the A-B-C .. some relief is expected on the coast as a change comes through.