The season certainly is, unless you're riding on a snowmobile in the picture.
But there will be a few better days coming. Last year, we also had a cold start in early December at -8°C but 31st and Jan 1st it was super warm with 17°C, so I was riding as much as I could. Streets are also empty on Jan 1st.
The long term weather models predict a mild winter 23/24 at +2°C for central Europe compared to average temps. So I keep my eye on the forecast for a good day.