What is the situation with gliding in Portugal?

Hi everyone, this will be my first post on this sub.

I am currently a student glider pilot in South Africa and will be visiting family in Portugal during December.

I would really like to visit one of the gliding clubs in Portugal (I read there is one in Sintra which is close to me and another one in Evora) and maybe even have a chance to fly with an instructor.

Hopefully someone here could put me in contact with the right people.

Thank you in advance.