With the record-breaking heat we have seen this summer, knowing how to keep your pool cool in summer heat is essential if you don’t want a sizeable warm-water bathtub in your backyard! 

In the summer, with many areas of the country experiencing triple-digit temperatures, all pools are at risk. The ideal water temperature for most pool owners is between 80-90 degrees. How can you keep your backyard pool refreshing, cool, and relaxing oasis during the day? Here are four suggestions: 

Keep the Water Moving 

Consider adding a decorative fountain or waterfall to your pool for functional and beautiful features. Try to turn the water feature off during the day’s heat and run it in the evening or at night to help circulate cool air throughout the water. Running your water feature too much when it is hot outside could warm the water temperature and cause more evaporation. 

Heat/Cool Unit (Pentair Ultratemp H/C 140)

Ask your pool builder or your service technician about adding a Pentair Heat/Cool unit to your pool. This is considered more of a season extender. It keeps the pool constantly cooler during those hottest summer days. It is beneficial for pools with direct sunlight or limited shade options. The Heat/Cool unit also helps keep the pool warmer in the fall and spring, giving you more months to use your pool. 

Cover your Pool 

Most pool covers are used for safety or to raise the temperature of the pool water. However, a reflective or white pool cover can help to keep the pool water temperature stable and prevent continual temperature rise due to the effect of the sun. Cover your pool when it isn’t in use during the day and uncover at night. 

Run the Pump at Night

Run the pump the most at night to amplify the cooling effects on fountains and water features. The cooler air temperatures will help lower the temperature even faster than running during daylight hours. But even if you don’t have any water features, running the pool pump overnight will circulate the water and help release some heat into the cool night air. 


Shading the pool often involves a natural sun break, such as tall trees or greenery around the pool. This also comes with the drawback of extra cleaning responsibilities when tree debris – like leaves and pollen – falls into the water. Another option is installing a canopy or other physical shade structure over a pool portion. You can also set up patio umbrellas on the sunny side of the pool to help shade the water. There are many different ways to add shade to the pool area! 


There are quite a few ways to cool your pool quickly. A bit of careful pool management by running the pump at night, combining different water features, adding specialized equipment, or adding shade, can make a massive difference in your pool water temperature during these hot Texas summers.

Request a Free Consultation

Find out more about the reality of making your backyard a relaxing retreat! Contact us today to schedule a free consultation to learn more.