Today’s expected peak temperature of 43C across Sydney is unusual for the eastern suburbs but residents in the west experience similar heat each year.
Julie Evans from the Bureau of Meteorology said there were about three days a year above 40C, on average, in Parramatta and the western suburbs.
‘‘Today’s temperature is not unusual for the western suburbs but it is much more unusual for the city,’’ Ms Evans, a meteorologist, said.
‘‘In the city we usually have the sea breeze on hot days, which cools things down a bit.’’
That cool breeze will be absent today as the city swelters.
There are also plenty of days in western Sydney when the mercury doesn’t quite reach 40C, Ms Evans said.
Since 1939 there have been about 16 days a year above 35C in the west.
Today’s predicted top isn’t expected to reach the temperature recorded on Parramatta’s hottest day on record, which was 44.8C recorded on January 1, 2006.
The hottest temperature ever recorded at Observatory Hill was 45.3C, on January 14, 1939.
Ms Evans said if today’s forecast temperature was reached it would be the third hottest day in the city in 150 years of records.