>>950035I slept in -12°C this night, that is what my thermometer said. Eh. Just make sure to have a good matt to sleep on, the ground is your biggest fear when sleeping outside. I also kept a scarf on over my mouth to keep my nose and mouth warm.
But I have to say, even with my -20°C sleepingbag, I craved for my extra-blanket as extra layer (I always fold a blanket into my pillow cover, incase I need it more than my pillow.)
So, it's kinda made my sleepingbag 15 cm thick.
For the rest. It went pretty okay.
I only woke up once around 2~3 AM
TL;DR get a good mattress unlike I what I had.
