travel tips for climbing in Portugal/Spain the end of May

Hello,

I'm going to Porto, Portugal to visit my aunt the end of May, and am hoping to climb. I was thinking of just sticking to sport climbing to bring less gear. Where should I go? Any advice? Is it easy to find partners? I'll be by myself, I speak a little Spanish, but no Portuguese. Any tips or travel advice appreciated! I won't have much time, maybe 1-2weeks. 

Thanks!