My dad was in the service, so we moved around a lot. Until I was in my mid-teens, we never lived in one city longer than a year. Funnily enough, I ended up following that same pattern when I was on my own, until fairly recently.
One way to look at the new place is to treat it as an adventure. Everything is new - you get to explore the area, find new hangouts, get to know new people, and know that every joke you tell will be new to them. Even in the US, each state has a slightly different culture, so you'll be learning different viewpoints and ways of looking at things. That will definitely help open your perspective on things.
It's nice to have roots, and, in your case, you'll have the benefit of choices.
The hardest part of the move will be getting used to weather. I feel for your pain.