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Should I cover my pool if it’s going to rain?

Facing the dilemma of whether to cover your pool before rainstorms is a common concern for many pool owners. Interestingly, covering your pool can significantly reduce post-rain maintenance.

This article will guide you through the reasons and ways to protect your pool from rain, ensuring it remains clean and ready for use. Keep reading – this might be just what you need.

Key Takeaways

  • Rainwater changes your pool’s water chemistry by adding acidic substances and nitrogen, which can turn the water green or damage surfaces.
  • Covers help keep out debris during mild rain but might need removing before heavy storms to prevent damage.
  • After rain, check and adjust your pool’s pH levels, remove debris with a skimmer, and treat algae if needed. Use a submersible pump for excess water.
  • Putting on a pool cover is easy for small pools but larger ones might require more hands. Regular maintenance keeps the cover ready for use.
  • Pool covers save effort in cleaning after rainfall by keeping out pollutants and helping maintain chemical balance.

The Impact of Rain on Pool Water

A photo of heavy rainfall pouring into a pool surrounded by greenery.
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Rainwater carries a mix of acidic substances and nitrogen from lightning strikes, which can significantly alter the pH levels of your pool water. This shift might not seem like much, but it can lead to an imbalance in the water’s chemistry.

Pool owners often find themselves dealing with green water or damage to their pool surfaces because the rain has lowered total alkalinity levels too far.

Heavy downpours add more than just water; they bring debris and algae spores into your swimming area. These unwelcome guests can turn clear blue waters into unsightly green messes that require immediate attention.

Additionally, the dilution effect of extra water means that the carefully balanced chemical levels you’ve worked hard to maintain are thrown off. The increased volume affects calcium hardness, total dissolved solids, and overall alkalinity – transforming your pool from a relaxing oasis into a high-maintenance problem overnight.

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Using Pool Covers During a Major Storm

An uncovered pool during a storm with strong winds and debris.
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During a major storm, strong winds can easily lift pool covers off. It’s often safest to remove the cover before thunderstorms or hail hit. This prevents damage to the cover and saves you money on replacements.

Securing pool equipment is crucial too. Use a large plastic tarp or waterproof coverings for this purpose.

Leaving your pool uncovered might seem risky, but it actually avoids potential harm to your pool cover during severe weather. High winds could rip the cover off if not properly secured, leading to unnecessary expense and hassle.

Furthermore, an uncovered pool will naturally collect debris, which can be cleaned out after the storm passes, ensuring protection for both the pool and its equipment from harsh elements like hail and heavy rain.

Using Swimming Pool Covers During Mild Rain

Pool covers come in handy, especially if the weather forecast predicts light rain and mild winds. They serve as a shield, keeping your pool water clean and maintaining its levels by preventing excess rainwater from getting in.

This approach not only safeguards your above-ground pool against the impacts of mild rain but also minimises the effort needed for postrain maintenance.

Covering your pool before mild rain hits can dramatically reduce the amount of work required afterwards. It stops debris and pollutants carried by rain from mixing with the pool water.

As a result, you enjoy cleaner water and avoid having to drain excess water later on. Pool cover benefits are clear – they offer effective protection against weather changes while helping maintain optimum conditions for when it’s time to dive back in.

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Are Pool Covers Hard to Put On?

Putting on a pool cover doesn’t have to be hard. It depends on the type of cover and the size of your pool. For small pools, you can easily do it yourself. You just spread the cover over the water and secure it around the edges.

Some covers come with easy-to-use fastening systems that make this process even simpler.

For larger pools or winter covers, you might need an extra pair of hands. These heavier duty covers offer leaf and debris protection along with excellent water quality maintenance by keeping out unwanted rainwater.

They’re designed to withstand heavy loads, such as snow, making them ideal for winterising your pool too. With a bit of teamwork, covering your pool becomes straightforward – ensuring heat retention and reducing evaporation effectively.

Essential Maintenance Steps After Rainfall

Rain changes your pool’s water chemistry. You’ll need to take some steps to fix this. Here’s how:

  • Check and Adjust the pH Levels: Rain can lower your pool’s pH, making the water more acidic than it should be. Use a pH testing kit to find out the current level. If it’s too low, you will need to add a pH increaser.
  • Use a Pool Skimmer for Debris Removal: After the rain stops, leaves and other debris likely have fallen into your pool. Grab your pool skimmer and carefully remove all foreign objects from the water.
  • Inspect Alkalinity Levels: Heavy rains dilute your pool’s alkalinity, which stabilises the pH levels. Test the water and if needed, add an alkalinity increaser.
  • Balance Calcium Hardness: Rainwater can also affect calcium hardness, leading to soft or aggressive water that damages surfaces and equipment. Test the levels and adjust as necessary using calcium hardness increaser.
  • Control Algae Growth: Excess rain can spur algae growth due to nutrients washing into the pool. If you notice algae beginning to form, treat the water with an algaecide promptly.
  • Maintain Pool Cover: If you used a cover during the storm, inspect it for damage and clean off any debris or standing water. This ensures it’s ready for next time.

Frequently Asked Questions About Pool Covers in Rain

Many people wonder if it’s necessary to cover their pools during rainfall. Yes, covering your pool can actually save you a lot of hassle by keeping debris out and maintaining water quality.

Pool cover maintenance becomes easier with regular use, especially in the rainy season. This reduces the need for post-rain cleaning and helps in managing the pool’s water level.

Another common question about using covers involves the rise in water levels during heavy rainfalls. Indeed, when there’s a significant downpour, the volume of water in your pool can increase drastically.

Employing a submersible pump is suggested to manage this excess water effectively, ensuring that your pool stays protected and that the cover doesn’t suffer damage from being overstretched or weighed down by standing water.


Covering your pool when rain is forecasted can indeed save you time and effort in maintenance. It keeps out debris, reduces chemical dilution, and makes post-rain clean-up a bit easier.

However, remember that during heavy storms, it’s best to skip the cover due to potential damage. After all, with the right precautions and maintenance steps, rain doesn’t have to be a big problem for your swimming pool.

Keeping these tips in mind will help ensure your pool remains a joy, no matter the weather!

For more information on the ease of fitting pool covers, please visit our comprehensive guide.


1. Should I cover my pool if rain is expected?

Covering your pool during rain can help prevent debris from entering the water and reduce the need for cleaning afterwards.

2. Will covering my pool protect it from damage during a storm?

Yes, using a cover can provide some protection against stormy weather and potentially minimise damage to your pool.

3. How should I prepare my pool if I know it’s going to rain?

Before the rain, ensure that your pool’s chemical levels are balanced and secure any loose items around the area to prevent them from being blown into the water.

4. Can I leave my pool uncovered when it’s about to rain?

Leaving your pool uncovered during heavy rainfall might lead to dilution of chemicals and an increase in maintenance requirements.

5. Is it necessary to drain excess water off a solid winter cover after raining heavily?

Yes, removing excess water promptly helps maintain the cover’s integrity and prevents stretching or tearing due to excessive weight.