Winters in the UK equal five hours of daylight per day, (assuming the sun actually comes out - if not then it doesn't really get light), endless cold, wet, windy days, and December is just MANIC with Christmas. My birthday is Dec 19th and I struggle to even go out for a very ordinary meal at, say, an Italian restaurant, because after 1st December they only have Christmas food, for some obscure reason.
Madness!
Summers are nice - 20-25 degrees mostly, so quite nice rather than really hot and humid, although we do normally get a couple of weeks of 35 degrees with 95% humidity YUCK!