You're not imagining it. When the mercury climbs, your disposable vape is more likely to gurgle, spit, or leak. The reason is physics: heat thins the e-liquid. Thinner liquid flows more easily, which sounds good, but it also means it can flood the coil and pool in the airflow channel. When you draw, you're pulling that excess liquid through the coil, and you get that bubbling, gurgling sound—and sometimes a mouthful of juice.

It's not just annoying. If enough liquid gets into the airflow, it can block it entirely, making the draw tight and unsatisfying. And in extreme heat, the battery can also get stressed, which is a bigger safety concern.