Same position as you. Moved to a town where I know no one, thought my flatmates would be in the same position but they all have a couple friends from back home so I felt like a bit of a loner from the beginning. Even though they're all nice, I haven't clicked with any of them. I went out with them a few times and felt out of place.
At my uni classes don't start till October, so I'm hoping I'll make some friends then.
In the meantime all I can say is stay optimistic. Sometimes the people you think you'll never be friends with, actually end up being your friends. And try and be friendly anyway, smile and make small talk so at least people will k ow you're approachable. Also, join clubs and societies, great way to make friends I'm told. And try and keep yourself busy in the meantime like join the gym or something.
Just hang in there, it's early days.