Why Does Evaporation of Pool Water Happen?
Warm water with cold night air increases evaporation. On a very cold morning you will see fog rising from the pool.
You can lose 1/2" to 3/4" of water a day due to evaporation. The greatest evaporation rate can be in May and Sept/Oct, when pool water can be int he 80's during the day and overnight air temps drop into the 70's.
How to Reduce Evaporation in Pools
Cover the pool.
I Am Losing Pool Water - Is it a Leak or Evaporation?
If your pool is only losing water in cooler months it is likely evaporation. We often see members thinking their pool sprung a leak when evaporation increases as the seasons change.
Follow a structured approach to leak detection as described in the TFP Leak Detection article
