In all honesty, as Echo says, it's rude. And that person should be called out on their rudeness. This climate is different even to what many of us humans are used to, let alone those who aren't native. In any case, I think that you're going to start seeing many people layer their clothes so that they may be comfortable as the weather changes.
If you're uncomfortable in your quarters, then someone will make sure that you have extra blankets on your bed so that your sleep will not suffer.