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Thread: Reasonable temperature range for swimming

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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Reasonable temperature range for swimming

    Being spring time I thought I would ask everyone what you think is the reasonable temperature range for a pool as well as ideal water temperature?

    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Reasonable temperature range for swimming

    It's a personal preference. Usually for heavy swimming, pools are in the 78ºF-82ºF range (the Red Cross recommends 78ºF for competitive swimming). Anything warmer doesn't feel comfortable with a heavy workout. For just plain recreational swimming, 82ºF-86ºF works for many people with personal preferences varying as to what feels too warm vs. too cold (the Arthritis Foundation recommends 83ºF-88ºF). For therapy pools or ones where people want it feeling warm without any chill, but don't plan on doing long swimming or heavy exercise and may need to stay in for an hour or longer, 86ºF-90ºF works (especially 86ºF-88ºF), though this feels like a lukewarm to warm bath. Anything above 90ºF starts feeling more like a hot tub than a pool though truly "hot" tubs are up to 104ºF. People's preferences also vary depending on the air temperature.

    Personally, my favorite temperature is 88ºF, but I'm skinny and just lounge around in the water and like entering the pool without any chill feeling. My wife does therapy exercises (mostly stretching and walking with only some swimming) so this temperature works for her as well, but most people would find this temperature too warm, especially if they swim. It doesn't cool one off until one gets out of the pool and has the water evaporate from one's skin.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
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    Join Date
    May 2010
    Western Pennsylvania

    Re: Reasonable temperature range for swimming

    We keep ours around 86f, But as chem geek said its a personal preference, I played around with different temps until we found one that suited us.
    15ft round above ground pool (6600 gallons)
    Sand filter
    Jandy gas heater
    Intermatic timer

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    Join Date
    Jan 2010
    Central Valley, CA

    Re: Reasonable temperature range for swimming

    My girls seem to think 70 is just fine!

    I'll get in at 72 but waiting to hit at least 80 where I expect it will feel plumb warm. We didn't get our pool in until late in the season last year so haven't had midsummer temps yet.
    Garden Leisure Voyager 12x24 AGP, 7500 Gallons, Hayward Power Flo Matrix 1 HP pump, dual speed, Hayward XStream Cartridge Filter, 120 GPM,

  5. Back To Top    #5

    Join Date
    Mar 2010
    Spring, TX

    Re: Reasonable temperature range for swimming

    80 is warm enough for me, but 85 and over is good temp for me.
    13,000 Plaster IG Pool approx
    Hayward C5030 Cart Filter
    Emerson 1081 EB653 1.0 HP 1.40 S.F. 3450 RPM
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  6. Back To Top    #6

    Join Date
    Jun 2007
    New Jersey

    Re: Reasonable temperature range for swimming

    I'm the polar bear type. I refused to put in a heater because I was afraid the women would make me use it. The pool is usable from 68°F up. 76°F is my perfect temp. When it goes beyond 84°F, I start injecting 55°F well water to cool it down.

    When I dive in the pool on a hot day after being active, I want to feel refreshed and cool down. Whenever I dive in a warm pool I feel cheated.
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

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    mitch08's Avatar
    Join Date
    Jun 2008
    Suffolk County, NY

    Re: Reasonable temperature range for swimming

    I prefer it in the range of 83-84 on very hot days. I feel like there is just enough of a chill to cool me off but warm enough to float around without moving a muscle for hours

    At about 4pm I turn it up and by night time it gets around 88-89. Which seems to be pretty perfect for a warm night. No chill at all.

    But my wife will complain if the pool is under 88 regardless of what the weather is outside. At nighttime she will not stay in unless its over 90.
    But she weighs about 110 pounds so maybe its that. Dont know...

    No matter how warm the pool is, if you go from the hot tub into the pool, you freeze your tush off when you first get in
    18x38 Inground Liner (25k gal) Paver surround, multi-speed pump, DE Filter, Raised spill over spa, TF-100

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    XsAllOverIt's Avatar
    Join Date
    Dec 2010
    Mount Airy, Maryland

    Re: Reasonable temperature range for swimming

    Had mine up to 80 this weekend. It felt good but unfortunately the outside temp was 68. After several minutes, headed to the hot tub. When it's 85 out, 80 is great. When it's 68 out, I believe 85 would be better. Fortunately had the hot tub running at 95, so it all went well. Got the heater off again till a couple weeks from now.
    18 x 36 Inground Gunnite, White Plaster 21K gallon
    18" raised spa, 8' Diameter (620 gallon)
    Triton II Sand filter, Intellichlor IC40 SWG
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