Friday, being a bit damp, we visited the museum and it was a great way to spend a couple of hours. There is an article here http://www.carvoeiro.com/Guide/Portimao%20Museum which says it all. The short film about canning has English subtitles which are amusing at times.

The temporary exhibition is about Portuguese guitars

The only disappointment was that the sign outside says there's a cafe and a coffee would have been nice before starting the tour.