5 Dec 2015
The Met Office official "winter" is December, January and February. To me, this makes a lot of sense. In just over 2 weeks time the evenings will start to get lighter again, although the mornings get darker still for a few more weeks. Once January has passed the nights are quite a bit lighter. By mid-February there are usually clear signs that spring is on its way. Mind you, snow is not unusual in January and February and the summer bird migrants don't usually arrive until April mainly.