Lisanmark,
It can rain during any month especially when we come (June this year), so don't worry about it just do as my wife does and borrow a black bin liner, cuts a hole in it for the top for her head, as for me, my skin is waterproof. Then we take a gentle walk unless it is raining really heavy, if it is then we just stay where we are, have another drink and wait for it to slowdown and then make for the next watering hole.
Enjoy yourself and make new friends. Mick.