It's probably tricky to reconcile, because the descriptions of it being hot and sweaty were established in earlier novels that came out before
Andor was definitively portrayed as an ice planet in Enterprise. So the new books are walking a fine line trying to not contradict either of those earlier sources.
But if I understand correctly, the assumption has been that in ENT, the planet was in the last vestiges of an ice age. But with 200 years of climate change and more advanced weather control technologies, the Andorians now live in somewhat more temperate climes than the ones the species evolved in. However, the consequence is a certain meteorological unpredictability, as seen with the huge storms and sudden floods in Paradigm