We shouldn’t accept climate change as inevitable or stop trying to effect change. That said, what sort of clothing is out there which might help as we feel more negative effects?
The main thing I’m thinking about is dealing with heat, but I guess part of the question involves a little forecasting about the types of challenges people will face in the future.
Seconding Patagonia. Also thrifting/reusing and repairing old clothes.
Patagonia also sells second hand clothes for those who are looking for that brand specifically.
Patagonia also has a ‘used’ shop: https://wornwear.patagonia.com/
I’ve had Patagonia perform repairs for me before as well. Takes a while to get the stuff back but the repairs are top notch.