If water boils at 100 degrees C then why do we see steam when we shower/wash our hands sometimes?
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What we call Temperature is a measurement for how fast the molecules in a substance move. Not all molecules move at the same speed. Some are faster some are slower but we only measure the average speed.
What happens when water evaporates is that molecules get fast enough to leave the liquid phase and go into the surrounding air. Some molecules will reach this speed at significantly lower temperatures than 100°C.
If water molecules come into cool air they loose some of their energy to the air molecules and become slower. If they get slow enough they will start forming microscopic drops of water. Those drops is what we see as fog.
When you wash your hands or shower with hot water there are a lot of molecules that can leave the liquid phase. A lot of the water will condensate again because the air is a lot cooler than the water
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