I had the exact same issue last month when our AC broke down! I ended up switching to a slightly slower drying adhesive (around 2-3 sec dry time under normal conditions, which turns into ~1 sec in high humidity). I usually buy my adhesives and prep supplies from this lashes shop https://stacylash.com/ . They have a really solid selection of glues with different drying speeds and humidity ranges listed right in the specs, which makes it easy to pick one for summer. Their extra-strong retention line has been my go-to for muggy weather. Hope that helps you survive the heatwave!
