There is no such thing as a fixed "evaporation" point for water. Evaporation can occur at any temperature, even below water's freezing point.
The rate of evaporation is influenced by temperature, air pressure, humidity and other factors.
An increase in:
- temperature = more evaporation
- humidity = less evaporation
- pressure = less evaporation
just a foot note to this very fine answer Is Molecular Nitrogen is a better heat transfer agent than the molecular patterens of the water molecule When Energy is applied to the molecular patteren sheets that move over each other fractioning then If from underneth the surface energy will transfer a dissociation through the mass to the surface sill fractioning the surface sheets allowing molecular nitrogen to move in transfering more of the energy to the water molecules patterens moving then off the surface of the water mass a same thing happens when the sun transfers energy to the surface