The number of MNers who thrive in miserable winter weather, getting all cosy with box sets and "hot choc" mystifies me. They would do winter lockdown well, because that's pretty much their normality.
I found last winter tough anyway. The torrential rain started with the school holidays and the weather was consistently sodden and grim from September, with round one of flooding by early November. It was the relentless mud that got to me, and it was a tough enough winter to get through anyway.
To me, it's logical to build up exposure and herd immunity while the weather is favourable to us, and for vitamin D and while the virus is weakened. I hope it doesn't gain momentum in the colder months when it's uninviting to be outside, and indoors has that stuffy, heated humidity.