| In NYC too - winds whip through the streets in winter, there isn't a lot of direct sun just like any city, blocked by tall buildings. I always felt lower Manhattan was worse, just crazy winds.
For the Giant game, dress in layers. Being on the SHADY side of the stadium that time of year matters. Pay attention to forecast - wind can be brutal in December too.
Trick I learned long ago is to bring some Styrofoam packaging to put my feet on. The concrete of the stadium gets through the thickest boots and thermal socks.
And if you feel cold, imagine how the MIAMI players feel. :D