LOL, IMO it is the socks.
I've worn flight boots in Virginia Beach during July (hot and muggy) with Smartwool liners and light wool outer socks and my feet did not get clammy. 6 months later I wear the same socks in PNW but with a pair of Danner Rainforest boots and again, felt great. Make sure your socks are right before you start experimenting with boots. $.02
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Better is the Enemy of Good Enough.
Okay, what’s your point??