I hope meet with you in Valencia, will be a great pleasure for me.!
Now in Barcelona is around 23 or 25ºC...a BIG SUn in the sky and not cluds or wind.
Valencia is always hottest that Barcelona. You must prepare a lot of fresh water or beers, a white t-shirt and short trausers...
But some times, long time ago, I remeber that one day was raining, but not too much.
For me, Valencia contest means the begining of summer....