Mine are the same - heaters clunk and click around 10pm and then again around 6 am.
Just put a pair of socks on!!
I do remember one year in October sleeping with a wooly hat on. My landlord (who lived downstairs) was away on holiday. When he got back he explained to me that i had to "bleed" the radiators. After that it was almost too hot. I had one of those ones that took up almost a whole wall!! It was great to lean against after coming home in the Winter.
Heating is completely off at this time of the year. In a typical building in the Mittelland, sunlight is more than enough to keep the inside warm until.
Heating is already on here thankfully! It depends on the temperature and the building management. The nights are already cold enough to warrant it. Anyone (here) who doesn't want the heating on simply turns the radiators down or off.