Vanda Sanderiana with yellowing leaves,browning roots

[OrcKid2]

Hi, I'm so new at this I do not even know where to go for the introduction.So I will just use this space to say hello to all. I am a newbie. I live in the Philippines in the colder area of Cavite. I bought several vanda sanderianas because the flowers are so beautiful. I did not know that these plants are so hard to care for. I placed them outside the house in a Northeast location. Did all the gurus said to do on the internet. Except that none was mentioned about what to do if it is always raining. Here in my country, it rains half of the year. Not everyday but maybe 3 times a week. Sometimes there is no sunlight. So now I have unhealthy vandas. Yellowing leaves, wrinkled and just....sad looking. One lost all its roots. Should I take them all inside the house and wait until the summer comes( maybe February). It has been very windy and cold lately too , about 66 deg. Farenheit or 19 deg Celcius. Pls help before the others die too. Thank you so much