Don't Lose Your Best Swimming Weeks in August

Aug 11
4 min read

Smiling older couple relax on a blue inflatable in a sunny pool, laughing as water splashes around them.

Keep your pool warmer through cool August nights and enjoy more of the swimming season with free solar energy.

As the middle of August arrives, many pool owners begin thinking that the swimming season is coming to an end. The kids are heading back to school, the evenings arrive a little earlier, and overnight temperatures start to dip. But here's the truth: some of the best swimming weeks of the year are still ahead.

The sun is still high enough to provide plenty of solar energy throughout much of August and even into September in many parts of the country. The biggest reason pools become less comfortable isn't because the sun disappears. It's because cooler nights slowly pull heat out of the water faster than it can naturally recover.

Understanding why this happens is the first step to keeping your pool warmer and making the most of the season.

Two smiling girls sit by a backyard pool with their feet in the water, wrapped in bright pink blankets on a sunny day.

Why Does Your Pool Feel Colder in August?

If you've jumped into your pool on a warm August afternoon and wondered why the water suddenly feels cooler than it did just a few weeks ago, you're not imagining it. Your pool is constantly gaining and losing heat.

During the day, sunlight warms the water. At night, your pool releases that heat into the cooler air. As overnight temperatures begin falling into the 50s and 60s, heat loss increases significantly. That means every morning your pool starts the day cooler than it did during the hottest part of summer. Even after several hours of sunshine, it may never fully recover the heat it lost overnight.

Over time, those small overnight temperature losses add up, making the pool feel noticeably cooler even when daytime temperatures remain pleasant.

August Still Provides Plenty of Solar Energy

Many people assume solar pool heating only works during the hottest weeks of summer. In reality, August continues to offer excellent solar heating opportunities. The sun remains strong enough to collect meaningful heat throughout much of the day.

The goal isn't necessarily to make your pool hot. It's to replace the heat that disappears overnight. Each sunny afternoon becomes an opportunity to recover those lost degrees and maintain a more comfortable swimming temperature.

Blue Beluga Gen2 device under sun rays with DIY setup steps: turn off pump, mount, attach hose, lay hose in sun, restart pump.

Replace the Heat You Lose Overnight

Think of your pool as a giant thermal battery. Every sunny day charges it with heat. Every cool night slowly drains it.

If you can replace the heat your pool loses each night, you'll maintain a much more enjoyable water temperature throughout late summer. That's exactly how the Beluga Gen2 is designed to work.

Instead of relying on expensive gas or electric heaters, the Beluga uses your pool's existing circulation system to move water through sun-warmed hose. As the water travels through the hose, it absorbs free solar energy before returning to the pool.

The process is gradual, but over the course of a sunny day, those extra degrees can make a noticeable difference in overall comfort.

Small Temperature Changes Make a Big Difference

Many pool owners are surprised how much difference just a few degrees can make. Water that's only three or four degrees warmer often feels dramatically more comfortable, especially during morning swims, evening swims, or after a cool night.

Those few extra degrees can mean the difference between jumping in immediately or deciding the water is just a little too chilly. That's why maintaining your pool temperature is often more important than trying to raise it dramatically all at once.

Enjoy More of the Best Swimming Weather

Children sit by a bright blue pool, splashing their feet in the water with colorful inflatable rings nearby.

Ironically, some of the nicest weather of the year arrives after the hottest part of summer has passed. Late August often brings:

Lower humidity
Comfortable daytime temperatures
Pleasant evenings
More enjoyable time outdoors

The only thing that sometimes keeps people out of the pool is cooler water. By capturing free solar energy during the day, you can continue enjoying evening swims, weekend pool parties, family gatherings, or simply relaxing in the water after work.

Get More Value from Your Pool

A backyard pool is one of the biggest investments many homeowners make. Every additional week you can comfortably use it increases the value of that investment.

Instead of watching your pool become too cool while sunny days continue, solar heating helps you take advantage of the weather that's still available. Because the Beluga Gen2 uses sunlight instead of fuel, there's no expensive heating bill to worry about. You're simply making better use of the free energy the sun provides every day.

Poolside hose drains water into a blue backyard pool, with a coiled black hose on the patio and fence in the sunny background.

Don't Wait Until Next Spring

One of the most common things pool owners say is, "I wish I had installed it sooner."

Many people wait until spring to think about keeping their pool warm. By then, they've already missed weeks of comfortable swimming at the end of the previous season.

Installing a solar pool heating system during August allows you to enjoy the remaining weeks of summer right away while also being ready for next season.