Mourning Gecko Humidity: Why It Needs to Be High
| Target humidity | 60–80% |
| Misting frequency | 1–2x daily |
A humid tropical species, not a desert one
Unlike many popular pet reptiles from arid habitats, mourning geckos come from humid tropical coastal habitats across the Pacific and Indian Ocean and need consistently damp conditions rather than dry ones. Running an enclosure too dry is a common, avoidable stressor for this species.
Misting routine
Manual spray bottle misting once or twice a day works well for most single-enclosure setups; automated misting systems or foggers are popular for larger collections. Humidity should spike after misting and be allowed to drop somewhat before the next session, rather than staying artificially pinned at maximum constantly.
Ventilation prevents the downside of high humidity
Good airflow — mesh sides, a well-ventilated top — lets humid conditions stay healthy rather than turning into stagnant, mould-prone dampness. Both humidity and ventilation need attention together, not humidity alone.
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A single adult mourning gecko needs a minimum 12"x12"x18" front-opening, well-ventilated enclosure — taller matters more than wider since this species is highly arboreal — furnished with cork bark, branches, and dense foliage for climbing.
A complete mourning gecko setup needs a tall 18"+ front-opening enclosure, cork bark and branches for climbing, coco fibre/moss substrate, a misting routine to hold 60–80% humidity, and complete MRP powder — no heat lamp is required in most homes.
Hatchlings can start in a small (roughly 5"x5"x8") enclosure to make food easier to find, juveniles move up around a few months old, and adults need a minimum 12"x12"x18" vertical enclosure.
Mourning geckos generally do best at normal room temperature, roughly 75–82°F, and can suffer heat stress above about 82°F. Most homes need no basking bulb or heat mat at all — just monitoring during hot weather.
Low-level UVB (roughly 5–6% output) is increasingly recommended as good practice, though it isn't strictly mandatory for mourning geckos the way it is for a strongly basking desert species — their diet's built-in D3 from MRP covers much of the gap.
Mourning geckos commonly live 5–8 years in captivity with correct husbandry, occasionally more — a notably long lifespan for a small gecko and a genuine long-term commitment.