I sometimes have to carry my plane to the end of the runway because it is too windy to taxi but once there it is not a problem, even for an 80" wingspan Kadet Senior.
I am comfortable up to near 20mph or so but not if it is gusting or constantly changing direction.
I have the advantage of it being very windy when I learned to fly so the wind is less of a factor than if I had only trained on calm days.
As my instructor put it "if you don't learn to fly in the wind you wont get to fly much"