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Should I cover my pool when it rains

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As a pool owner, I know those rainy days can cause a bit of worry. You start wondering, "Should I cover my pool when it rains?" After all, you put a lot of time and effort into keeping your pool sparkling clean – who wants all that work washed away by a storm? Well, the answer might surprise a lot of people!

A tranquil backyard with a swimming pool awaiting pool maintenance under an overcast sky, suggestive of upcoming rain.

Should I cover my pool when it rains?


  • Debris Defense: One of the biggest benefits! A cover keeps out leaves, branches, insects, and anything the wind blows your way. This saves you post-storm skimming time.
  • Chlorine Saver (Sometimes): During a light drizzle, a cover may slow down the dilution of chlorine in the water, minimizing the need for extra chemicals post-rain.
  • Safety Aspect: While not foolproof, a sturdy, well-fitted cover adds a layer of protection against accidental falls, especially for small children or pets.


  • Storm Vulnerability: This is a big one. High winds, heavy rain, or falling branches can damage lightweight covers. Worse, they can rip the cover, sending the debris into your pool!
  • Cleanup Hassle: A cover that gets soaked and littered with debris is a pain. It becomes heavy, hard to dry, and you likely still need to skim the pool underneath.
  • Chemistry Disruption: Covers block sunlight and disrupt airflow. This can hinder evaporation, trapping chlorine and potentially messing with your pH levels. While less of a concern for short periods, it's something to consider.
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03/20/2024 02:58 am GMT

The Verdict

It really boils down to these points:

  • Type of cover: A mesh safety cover can handle more rain and debris than a basic solid cover.
  • Weather Severity: If it's light rain, a cover can be helpful. Facing a major storm? It's likely to do more harm than good.
  • Your priorities: Concerned about safety? A sturdy cover is worth it. Focused on minimal maintenance? Leaving the pool uncovered might be best.

When Covering Makes Sense, and When It Doesn't

  • Light Rain: A light shower probably won't do serious harm. Covering might help minimize chlorine loss.
  • Heavy Storm: Skip the cover! Big storms bring high winds, and that can cause more damage to your pool cover than the rain itself.

Tips for Pool Owners During Rainy Season

It's not about the cover; it's about storm prep! Here's what to do:

  • Secure the Area:  Think beyond just patio furniture. Here's what to check:
    • Toys and Floats: Deflate inflatables and put away pool toys – they easily become projectiles in the wind.
    • Landscaping: Trim back any tree branches overhanging your pool. They might break in the storm and cause damage.
    • Outdoor Structures: Inspect your pool shed, cabana, or any other structure near the pool. Fix loose parts to prevent them from flying off.
    • Electrical & Gas: If severe storms are predicted, check with local authorities for guidance on turning off gas lines or outdoor electrical equipment for safety.
  • Check Your Chemistry: This is your pool's best defense:
    • pH Matters: Aim for a pH between 7.4 and 7.6. Rainwater can disrupt this balance. Correct any imbalances before the rain hits.
    • Chlorine Boost: Slightly increase chlorine levels to compensate for rainwater dilution. Follow your product's guidelines.
    • Test Kits are Key: Have a reliable pool test kit on hand for both before and after the storm for quick chemistry checks.
  • Run the Pump:  Good circulation matters!
    • Pre-storm boost: Run the pump for a few extra hours before the storm to distribute the chemicals you've added.
    • During the storm: Keep your pump running at its normal schedule. Don't turn it off unless there's flooding risk or a severe electrical storm.
  • Clean Up Afterwards: The storm has passed, now what?
    • Skimming is Vital: Remove leaves, twigs, and other debris brought in by the rain. This prevents them from decaying and messing with your chemistry.
    • Chemical Check-Up: Re-test your chlorine and pH levels and adjust as needed. Heavy rain might necessitate a shock treatment.
    • Inspect the Pool: Look for any damage to the pool walls, liner, or surrounding equipment. Address small issues before they become big problems!

FAQs About Pools and Rain

  • Will heavy rainfall damage my pool equipment?
    • Generally, pool pumps, filters, and heaters are made to withstand some exposure to the elements. They often have weather-resistant housings and seals.
    • However, extreme situations pose a risk:
      • Flooding: If water reaches the pump motor or electrical connections, there's a potential for damage or short circuits.
      • Lightning Strikes: Electricity can surge through pool equipment if struck nearby. This is why turning off your pool system during electrical storms is crucial.
    • Proactive Tip: Check the manufacturer's instructions for your specific equipment. Some may have recommended safety procedures for severe weather.
  • What if I have an automatic pool cover?
    • Automatic covers are fantastic for convenience, but their storm-resistance varies greatly:
      • Type matters: Solid automatic covers can be damaged by heavy rain or debris buildup. Mesh covers drain better but may not handle extreme wind.
      • Model-Specific: Always refer to your cover's manual. It will outline the limits of what your cover can handle.
      • When in Doubt, Open it: If a major storm is coming, and you're unsure about your cover's capabilities, it's usually safer to keep it open to avoid potential damage.
  • Will too much rain make my pool overflow?
    • Absolutely! Especially if you're expecting a lot of rainfall in a short period, your pool can easily overflow.
    • Overflow Damage: This isn't just about water spilling out. Soil erosion, flooding of surrounding areas, and pressure on your pool walls can cause issues.
    • Keep an Eye on the Levels: If heavy rain is coming, check your water levels frequently. Proactively lowering your pool by an inch or two can make a huge difference.
    • Pump it Out: Have your pool pump ready. If your pool is close to overflowing, use the pump's waste/drain setting to lower the water level.

A Final Word

Covering your pool during rain is often less helpful than we think. Instead, focus on securing the pool area, maintaining proper pool chemistry, and having a good post-storm cleanup routine. With some simple steps, you can protect your pool and keep it ready for fun in the sun (which is sure to return soon enough)!

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