Should I wait until temps are below 60* in my area before closing pool


Active member
Apr 29, 2016
Is it true that I should wait until the temperature in my area (northeast) stay 60* and below to close my pool. I read that people say algae won't grow and it's a better time to close?

Any Truth.

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
Texas, San Antonio/Marion, South-Central Area
Pool Size
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
60 is the general baseline here at TFP and certainly about the warmest you want it, but if you can wait longer and let the water temp fall more that's even better. Some owners don't close until their water temp hits 50 or lower, weather conditions permitting of course.. The golden rule - close late open early. The colder the water the better.
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TFP Expert
LifeTime Supporter
Jun 12, 2009
NW Ohio
Life is a lot easier if you close when the water is below 60 and open before the water is above 60.

You can close or open any time, but the earlier you close and later you open the higher the chance of dealing with algae or other issues when you open.
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Gold Supporter
TFP Guide
Jun 16, 2019
Hey lil !! The problem with the weather for all of us is that the water temps are prime for closing on a particular week. And don’t you know, the unexpected heat wave shows up exactly 9 days later. So then you’re too warm again. We had a winter that was so out of whack a couple of years ago that we had 60/70 degree days in Jan and Feb and March/April were borderline freezing. I was gifted a swamp through none of my own doing. So the best you can protect yourself is to just wait as long as you can in the fall and get a good early jump on it in the spring. The water is real easy to maintain early/late and you can go a week or weeks without needing to add FC.

Plus, it’s always so much nicer to see the clear water instead of the cover. Even if nodody dares to think of swimming.