When you're outside on a 90+ degree August day when the air isn't moving and it's humid, you're miserable. The a quick sun shower pops by and a few minutes later you realize the impact humidity really has as you see the steam coming off the asphalt.
Part of my yard is mud because we've had so much rain. There's still condensation on my windows as I type this. I can tell you that the exact same temperature is worse with high humidity. Your body can't get the sweat to evaporate quickly enough to cool you.
This is where @joeyhh's wet bulb...
Today's forecast:
College Station: 108 real feel 112
Coral Gables: 94 real feel 109
The difference: 26% humidity in TX, 61% in FL.
That may not be as big an advantage as it would be against BC or Syracuse, but hot and humid is much worse than hot.