Re: Trying to sleep in warm weather
Stop working nights?
Joking aside though I have read why you work nights, similar reasons to myself. I can sympathise though as I too worked permanent nights getting on for 25 years and had similar problems. Most times I returned home after 12 hour plus shifts mentally shattered so did sleep most times. Fortunately, when it was really hot indoors I retreated to the garden and slept out there in the shade of a tree. That was alright while the neighbourhood was quiet, very different when the schools were on holiday though.
You do seem to be in an impossible situation, although a lot of Pyxell's suggestions would probably help. The aircon machine might probably be the answer, maybe on a time switch, but if it had a fan of any description which it probably would, the noise might disturb you if left on while trying to sleep.
Nowadays, after stopping working nights and being retired for some ten years I often have trouble sleeping at night, my body clock tells me I should be awake! That's even though working nights was 20 plus years' ago now!
Best of luck in finding some way out of this, not getting sleep is the worst of all things I reckon.
Edited to add: I bought one of those cooling pillows last summer when it was so hot (Boots £9.99 from memory) and they do work.