How can water evaporate from a pool in the summer when it is supposed to evaporate at 100°C ?
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It *boils* at 100C. This is a different process.
When a liquid is boiling the entire mass of liquid is changing phase, all molecules have enough energy to make the phase transition into a gas.
Below that temperature, molecules near the surface can still jump for it when they get hit just right. It’s a much slower process that occurs only at the surface and only when the air is suitably dry.
The molecules at the surface wander off and can’t find their way back, slowly converting the whole puddle into vapor.
If it’s too humid it won’t happen. Boiling forces the liquid into the gas phase no matter what the humidity level is.
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