When Can I Open My Pool?

As temperatures rise, it can become particularly tempting to take steps to jump-start the pool season (particularly if you just bought your home and are an eager first-time pool owner). However, there are many nuances to consider before you schedule that pool party.

"Yes, there are indeed different maintenance considerations based on geographical locations," agrees Jimmie Meece, Brand President at America’s Swimming Pool Company. "For instance, in cool weather climates like New York, where closures are common due to winter weather, the timing of openings becomes crucial. It's recommended to open it when the water temperature reaches around 70 degrees Fahrenheit during the day."

Depending on where you live, you might be ready to initiate the pool opening process in the late Winter or early Spring—March or April isn't unrealistic! Even if the daily temperatures dip at night, you can insulate the water with a solar pool cover and help preserve the warmer water temperature early in the season.

Consider These Factors When You're Planning to Open Your Pool

• Above-ground or inground pool? Inground swimming pools are typically insulated better by the surrounding ground, which helps retain heat. This means that even if ambient daytime temperatures are still relatively cool, the water in an inground pool may warm up more quickly compared to an above-ground pool.

• Water temperature. As Meece explained, it's best to open it when the water temperature consistently reaches around 70 degrees Fahrenheit during the day. This helps prevent issues like algae growth and ensures comfortable swimming conditions.
  

• Warm weather patterns. Consider local weather forecasts and historical climate data to gauge if it's the perfect time to open it. Opening too early may expose it to late-season cold weather snaps. Also, opening too late may result in missed opportunities for enjoyment.
  

• Associated costs. Opening too early could lead to unnecessary maintenance, extra costs for additional chemicals like chlorine tablets and pool shock, and increased electrical costs for heated pools.

• Maintenance readiness. Assess the readiness of your pool equipment, such as filters, the pool pump, and heaters. Ensure they are in proper working condition and address any necessary repairs or replacements before opening for the season.
  

• Water clarity and algae control. Check the clarity of your pool water. If it appears cloudy or discolored, it may indicate a mountain of algae or imbalanced water chemistry, signaling the need for pool chemical treatment.
  

• Pool cover removal. If you've covered it for the winter, consider removing the cover to assess the condition of the water and surfaces. Removing the mesh winter cover can be a challenge for pool owners, so you may also want to schedule to have a professional team come out and remove it for you. Delaying cover removal excessively can lead to debris buildup and potential damage to the structure.
  

Related: Can You Keep Your Swimming Pool Open During a Mild Winter?

What happens if you open your pool too late?

Regardless of circumstances, it's important to open it when the timing's right—and don't delay. "Delaying the opening could lead to potential issues, such as late-season algae blooms, resulting in green water when reopened in the spring," shares Meece. Despite being time-consuming and difficult to clean, algae buildup isn't the only problem you may face. Delaying opening and its initial treatment can also lead to an imbalanced water chemistry. Without regular testing and treatment, pH levels can become too high or too low, leading to potential damage to the pool liner, surfaces, and equipment.