Would you uproot your life, leaving behind your family, your job etc if you dont like the weather in a country.
(Obviously theres always more than one advantage of moving someplace but to build a life somewhere, would weather be top 3 factors in choosing where to live).
if the weather is making you unhappy on a regular basis, I don’t see why that isn’t a valid reason to make moving away a goal.
With the ongoing climate catastrophe, it’s probably prudent to take such factors into account.