Pool Water Care During a Heatwave: Special Considerations


With the scorching sun blazing down, summertime often means endless pool days. However, as the temperature rises, your pool requires special attention to maintain its clarity, safety, and overall health. In this article, we’ll delve into essential tips and tricks for pool water care during a heatwave.

Why Is Pool Water Care Important?

Before we dive into the details, let’s understand hot tub cleaning why maintaining your pool water is crucial during a heatwave.

Keeping It Crystal Clear

Regular Testing and Balancing

To ensure your pool remains a refreshing oasis during the hottest days of summer, you must regularly test and balance the pool water. High temperatures can cause water chemistry to fluctuate. Use a pool testing kit to measure the levels of chlorine, pH, alkalinity, and cyanuric acid.

Shock Treatment

Heatwaves can lead to increased pool usage, which elevates the risk of algae and bacteria growth. Regular shock treatments can help prevent these issues. Choose a chlorine-based shock treatment to keep the water clear and safe.

Algae Prevention

The relentless heat can create ideal conditions for algae to thrive. Using algaecide or phosphate removers can be an effective preventive measure.

Hydration for Your Pool

Increased Evaporation

During a heatwave, your pool is not the only thing losing water; you are also battling higher evaporation rates. Cover your pool when not in use to reduce evaporation.

Top Up the Water

Frequently check the water level and add more if it falls below the recommended level. This simple step helps maintain the pool’s health and ensures the pump doesn’t run dry.

Sun Protection

Pool Covers

Besides reducing evaporation, pool covers can offer protection from harmful UV rays. Consider investing in a cover to keep your pool water safe from excessive sun exposure.

Sunscreen for Pools

Yes, you read that right! There are pool-specific sunscreens available that can shield your pool from the sun’s harsh rays.

Safety Measures

Extra Supervision

With more people using the pool during a heatwave, safety should be a priority. Ensure there is constant supervision, especially if children are swimming.

Proper Fencing

If you don’t have one already, installing a pool fence is a wise choice to prevent unsupervised access to the pool area.

Routine Maintenance

Regular Cleaning

More swimmers mean more debris. Regularly clean your pool’s surface and skimmer to maintain optimal water quality.

Filter Maintenance

Don’t forget to check and clean your pool’s filter regularly. A clean filter ensures efficient circulation and filtration.


In conclusion, maintaining your pool during a heatwave is essential to keep it safe, clean, and enjoyable. Remember to test and balance your water, perform shock treatments, and take steps to prevent algae growth. Keep an eye on water levels, protect your pool from the sun, and prioritize safety. With these tips, your pool will remain a refreshing oasis even in the sweltering heat.


1. How often should I test my pool water during a heatwave?

  • You should test your pool water at least two to three times a week to ensure it’s balanced.

2. Can I use regular sunscreen to protect my pool from the sun?

  • Regular sunscreen is not recommended for pools. You should use pool-specific sunscreens designed for this purpose.

3. What’s the ideal pH level for pool water during a heatwave?

  • The ideal pH level for pool water is between 7.4 and 7.6, even during a heatwave.

4. How can I reduce evaporation from my pool during a heatwave?

  • Using a pool cover when the pool is not in use can significantly reduce evaporation.

5. Are there any natural ways to prevent algae growth in my pool?

  • While chemical algaecides are effective, you can also consider using enzymes or maintaining proper chlorine levels to deter algae growth naturally.