The average pool water evaporation rate is about a quarter of an inch of water per day or more than two inches in a week, which on a 33′ x 18′ swimming pool (an average pool size) is more than 2500 liters or approximately 600 gallons a week; this may vary depending on your climate and the factors listed above.
Does pool water evaporate more at night?
Losing Water Through Evaporation. ... Water molecules rise to the surface, form into a vapor and eventually get released into the air. Heated pools on cool nights experience evaporation more rapidly. This is also why heated pools lose most of their heat overnight.
How do you stop pool water from evaporating?
This article is on saving water, but it focuses only on tactics to slow evaporation.
- Cover your pool. First and foremost: Use a pool cover! ...
- Try a liquid solar blanket. Don't like the idea of using a solid cover or solar blanket on your pool? ...
- Turn off any water features. ...
- Reduce water temperature. ...
- Add windbreaks.
