I don't know that gillyweed will have done anything particularly for the temperature. Presumably they equipped them all with some sort of warming charm. Or perhaps they were expected to be able to manage that themselves.
None of them seem to be suffering hypothermia, however. Cold as it is, that would have done for them quite quickly.
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Oh, wait. Yes, she's got away from the grindylows and
Harry's telling her to just go, go back.
Poppy, is the temperature going to be a problem for him? The gillyweed ought to protect him, right?
no subject
None of them seem to be suffering hypothermia, however. Cold as it is, that would have done for them quite quickly.