Heatwaves are recurring, and 2026 is expected to be no exception. When temperatures soar, the pool quickly becomes the garden’s focal point, but it also demands more attention. Evaporating water, sun-exposed swimmers, scorching patios: heatwaves put your outdoor space to the test. Here’s how to keep your swimming area pleasant and well-protected during intense heat.
Why Heatwaves Stress Your Pool
Above 35 °C, your pool water heats up quickly and evaporates significantly. A pool can lose several centimeters of water per day during a heatwave. As a result, you regularly add water, your bill increases, and the chemical balance of the pool becomes unstable.
Heat also accelerates the development of algae and bacteria. Water at 30 °C is an ideal breeding ground for microorganisms. Chlorine degrades faster under UV exposure, requiring close monitoring of treatment. Without vigilance, the water can turn in just a few days.
Limiting Evaporation and Keeping Water Cool
The primary defense against evaporation remains a pool cover or blanket. When placed overnight or during the day when the pool is not in use, it significantly reduces water loss and limits temperature rise. A bubble cover, for example, retains heat in the evening and acts as a barrier against daytime evaporation.
Also consider creating shaded areas around the pool. A shade sail, a pergola, or well-placed shrubs lower the water temperature and make the surroundings more comfortable. The idea is not necessarily to shade the entire pool, but to break direct exposure during the hottest hours, between 12 PM and 4 PM.
Securing and Delimiting the Swimming Area
During periods of intense heat, children spend their day outdoors, and the pool is naturally appealing. This is precisely when safety must not be neglected. A pool fence compliant with standards remains the most effective protection against accidental drowning, especially when adult attention is dispersed by heat and fatigue.
Beyond safety, clearly delimiting the swimming area structures your garden. A barrier, a discreet fence, or a privacy screen creates a true pool corner, sheltered from curious glances and from wind that further dries out the water. Districlos offers several solutions for fencing and protecting this space, to be chosen according to your configuration and budget.
Protecting Swimmers from the Sun
Cool water is not enough if you are baking by the poolside. Setting up shaded areas around the pool allows you to enjoy swimming without risking heatstroke. A few simple adjustments make a difference:
- A privacy screen that blocks the sun while preserving intimacy
- A pergola or a shade sail over the patio
- Plants that provide natural coolness
Practically speaking, keep drinking water, sunscreen, and a shaded spot to lie down readily available. During a heatwave, the best swimming times are in the morning and late afternoon, when the sun is less intense and the water has not reached its peak temperature.
Maintaining Water During High Temperatures
Maintenance requires more rigor when it’s hot. Check chlorine levels and pH more often, ideally every two days during a heatwave. Heat causes disinfectant to drop rapidly, and poorly treated water quickly becomes cloudy.
Also, run the filtration longer. The classic rule is to divide the water temperature by two to get the number of daily filtration hours: water at 30 °C therefore requires approximately 15 hours of filtration. Prioritize the hottest periods of the day, when algae proliferate the most.
Preparing Your Outdoor Space Before the Heat Arrives
A common mistake is waiting for the first heatwave alert to get equipped. Covers, privacy screens, and fences should be installed in advance, calmly, rather than in the urgency of a heatwave when everyone is scrambling for the same equipment. Anticipating also means having time to compare solutions and choose what truly suits your garden.
If you plan to fence your pool or install a privacy screen before summer 2026, it is best to start in the spring. Districlos supports individuals and professionals with this type of project, offering products in stock available in stores or delivered to your home.
Expert in fencing, gates, and outdoor landscaping since 2019.
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