Well as all good beekeepers know, bees don't hibernate.
So what do they do?
First up It's important to remember that bees are amazing animals.
As the temperature drops (below 10 deg C), the days get shorter and nectar becomes scarce the bees decide it's time to kick the drones out, reduce numbers and stay indoors.
Bees don't hibernate, they cluster in a ball in the middle of the hive and keep each other warm, eating the honey supplies they have stored up to help them keep the temperature in the hive at about 36 deg C, no matter what the temperature falls to outside.
They will stay like this all winter unless there are some warm spells above 10 deg C when they will pop out to visit the toilet, have you ever wondered what the pale brown spots are on the washing on the line? Now you know:-)