If the dew point is favorable at least, then drinking Hot Coffee and let myself sweat in front of an Electric Fan. If it is very humid, Ice on neck or taking a cold shower.
If I had to go outside or Air conditioning at the office broke, then I'd wear light clothing where sweat is easier to evaporate
Otherwise, I'd just use air conditioning and eat up the electricity cost, fuck this weather.
As a cheapskate selfhoster who can only afford a few gigabytes of storage, It may come to a point where 30GB would not be enough to host the entire post history of the lemmy fediverse once user activity rises, and only those with deep pockets would be able to host archives of lemmy posts, just like usenet servers.