One man said the wave has led to a change in his nightly routine.
@TheSeanWilson (Mount Druitt, New South Wales): The heat is forcing me to turn off my Mac mini every night.
A number of twitterers said it is disrupting their sleep.
@moudanie (Sydney): It's sooooo hot tonite! Helen & I can't sleep in this 30deg heat... twittering at 4am... I'm gonna be so sleepy later today
@shique (Canberra): It is impossible to sleep in this heat.
Others refuse to let the weather bring them down.
@purrsikat (Canberra): Wolfing down peanut buttered toast & orange juice before 0830 meetup at Sparrow Hill. Heat won't keep us down. Multicultural Festival later
@joshglid (Canberra): getting ready to head to the cafe for breakfast with the kids. refusing to comment on the heat. listening to Jane's Addiction