I've personally come to feel cotton is vastly over-rated as a clothing material for anything but cost-saving goals (which certainly is an important factor.) Of course there's the old adage "Cotton Kills", referring to cold weather, but it's also miserably subpar for hot conditions for some of the same reasons: as it absorbs sweat the fibers swell and reduce the fabric's breathability, leading to increased body heat retention. You may be inclined to think a wet fabric aids in cooling but that effect is short lived once evaporation can't keep up with the addition of more perspiration and air movement slows to almost none. And that's before we even get into the resulting bacterial overgrowth, AKA body odor, for which cotton is notoriously awful at mitigating.
So, anyhow, if you have the time, means, and inclination, I highly recommend looking at newer fabric alternatives like lyocell (typically found as the branded names of Tencel, Modal, or Viscose).
And you should always consider merino wool and hemp, which are most often found combined with a synthetic or two, typically for improved elasticity and shape retention, but also for increased comfort since they are both not historically known for their softness. Wool is in many ways the holy grail of fabrics (for reasons which you can find in fantastic detail online) and the relatively new variant of merino only improves on a well-earned reputation. Whereas hemp, despite reigning as the indisputable champion of strength and durability for literally thousands of years in non-clothing applications, has recently seen a resurgence thanks to various factors, notably improvements in comfort. (That said, my personal experience with hemp clothing has shown that it still leaves something to be desired in the area of real world durability, from the perspective of the several various pieces of clothing I've owned--mostly shirts, plus a couple pants--starting in the late 1990s and purchased as recently as 2019.)