I went outside with the very good intention to do water changes (in the garage) in all of my tanks...... I got to the 2nd one & the heat was just unbearable.... genuinely 42Deg Celsius in the shade... I'm back inside with the aircon full blast (and battling) set at 16 deg C.... At least keeping the inside temp at around 28 Degrees. Our warm months (Dec to April) is laying ahead.... dread to think of it.