Low humidity near body heat temps upwards- sitting in front of a floor fan (not a device that there's an idea of air being moved) blasting air relies on sweating a lot and drinking plenty of fluids. Ceiling fans in rooms I've worked in seem to have a very limited effect. Setting up something more permanent, evaporative cooling is probably better for environment if implemented at scale.

Higher humidity temperatures - there's a point in moisture saturation in the air that even floor fans blasting away won't do much if the air is at body temperature or higher.

Older houses even in Australia are often not set up to be thermally efficient enough to use AC or units are too noisy for neighbours (this is changing with split systems which seem to be quieter) - but temporarily when I've needed to, I've set up an AC internally with a large container to catch the moisture, insulating as best I can a small room space to cool that I can both work and throw down a small mattress to sleep on, while venting the hot exhaust air into another room or hallway that is open to the outside hot air - just ensure nothing heat sensitive is in the room.

Edit: typo throw

https://www.euronews.com/2026/06/22/europes-heat-pumps-repla...

https://un-spider.org/links-and-resources/data-sources/extre...