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SESK: Stuff Everyone Should Know · sesk.info/reptile-leopard-gecko-humidity

What kind of humidity do leopard geckos need?

Low humidity, about 20 to 40 percent.

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  1. Very humid, 70 to 90 percent
  2. Always 100 percent
  3. Low, about 20 to 40 percent ✔

Why: Leopard geckos come from dry, arid scrub. Merck lists 20 to 30 percent and a UC Davis guide lists 30 to 40 percent. A humid hide adds moisture when shedding.

Huh, didn't know that: Humidity that is too low can make shedding hard, while humidity that is too high can lead to skin infections.

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Why did the gecko trust the hygrometer? It did not make misty guesses.
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References

Answer: Low, about 20 to 40 percent. Leopard geckos come from dry, arid scrub. Merck lists 20 to 30 percent and a UC Davis guide lists 30 to 40 percent. A humid hide adds moisture when shedding.

  1. CVET Avian and Exotics Animal Care and Feeding Guide (UC Davis) cvet.vetmed.ucdavis.edu/sites/g/files/dgvnsk13661/files/inline-files/CVET%20Avian%20and%20Exotics%20Animal%20Care%20and%20Feeding%20Guide%20010725.pdf
    30-40% Leopard gecko
    Checked 2026-10-11.
  2. Important Husbandry Requirements for Selected Reptiles (Merck) www.merckvetmanual.com/multimedia/table/important-husbandry-requirements-for-selected-reptiles
    Leopard gecko Terrestrial, arid scrub 25-30 (77-86) 20-30
    Checked 2026-10-11.
  3. Chapter 14: Birds and Herps (University of Minnesota) open.lib.umn.edu/vetprevmed/chapter/chapter-14-birds-herps
    low relative humidity increases risk for dehydration and may impair normal shedding while too high relative humidity may predispose to skin infections
    Checked 2026-10-11.

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