Os Amantes da Chuva (1979)

A curious story: it rains whenever a couple of lovers meet. Against the weather forecast, it rains all over the city. And as the love grows, the stronger becomes the rain. Found by a television crew, they receive the title of "Rain Lovers", and their dates become public spectacles. But all the commercialization starts to cool off their relationship, and the rain doesn't come anymore. Even when together, there is no rain. They rebel against the situation, and run away. The rain starts again, stronger than never, and the city is flooded. The populations starts to hunt them, believing they are the cause of the tragedy, till they are found and killed. Will it ever rain again?