>so you'll get some air cooling you wouldn't get if you were just walking. 39C is well above skin temperature so you're only going to get evaporative cooling a

>so you'll get some air cooling you wouldn't get if you were just walking. 39C is well above skin temperature so you're only going to get evaporative cooling and the effectiveness of that depends on humidity. It's possible the heating effect of the hot air blowing over your skin overwhelms the evaporative cooling and you are actually getting net warming. Even if the humidity is low if you're not already drenched in sweet, it's going to feel awful.