Never really noticed if it got cold on a night and the only time I slept outdoors on a night was at the checkpoint where the outside concrete sports pitch was, I saw no one was laid on it, but I felt the concrete and it was retaining a lot of heat, far more than the grass so I laid out on it in the middle where it should have been quiet and peacefull and I was cooking inside the silk liner in no time. Only problem was, I laid out next to one of the metal barriers strung out across it with some tape in the gaps just so I had something to lean the bike on. Shortly after getting laid out realised what it was for and it was the walkway from the Checkpoint to the dormitories, (so I was told). Funny no one was walking along it till I was just about to nod off, then it was clunk, clunk clunk as riders walked past my head constantly with their shoes and cleats on, until I decided enough was enough and got back on the bike and carry on riding.