Bearded Dragon Egg Incubation Guide
| Incubation temperature | 82–86°F |
| Incubation humidity | ~80% |
| Incubation length | ~55–75 days |
Temperature and humidity
A stable 82–86°F with high humidity (roughly 80%) in a vermiculite or perlite medium is standard. Fluctuating temperatures increase the risk of developmental problems, so a dedicated, thermostat-controlled reptile egg incubator is strongly preferred over improvised setups.
Incubation length
Expect roughly 55–75 days depending on temperature — incubating toward the warmer end of the range generally shortens incubation time somewhat, though pushing too hot risks developmental issues.
Sex is genetic, with a temperature caveat
Bearded dragons have genetic sex chromosomes (ZZ/ZW), unlike species with pure temperature-dependent sex determination — though research has found that sufficiently high incubation temperatures can, in some cases, cause genetically male dragons to develop as phenotypic females, a phenomenon called sex reversal.
Candling and checking
Eggs can be gently candled with a bright light a few weeks in to check for development (visible veining) versus a clearly bad egg (no development, discoloration, mould) — handle eggs minimally and never rotate them once placed.
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A single adult bearded dragon needs a minimum 4ft x 2ft x 2ft enclosure, with 6ft x 2ft x 2ft increasingly recommended as best practice — plus a linear T5 HO UVB tube, an overhead basking bulb on a thermostat, a real thermal gradient, a sturdy basking platform, and a shallow water dish.
A complete bearded dragon setup needs a 4ft+ enclosure, a linear T5 HO UVB tube, an overhead basking bulb on a thermostat, two thermometers, a basking platform, a hide, a shallow water dish, and age-appropriate substrate — all running and stable for at least 48 hours before the dragon arrives.
Hatchlings can start in a 20-gallon long tub, juveniles need to move to roughly a 40-gallon breeder footprint by a few months old, and adults need a minimum 4ft x 2ft x 2ft enclosure, with 6ft x 2ft x 2ft recommended.
Basking surface temperature should run 95–110°F depending on age (hotter for hatchlings, cooler for adults), with a cool side around 75–85°F, all provided by an overhead basking bulb on a thermostat — not a heat mat or heat rock.
Bearded dragons need a linear T5 HO UVB tube at 10.0 or 12% output, running the length of the basking third of the enclosure with nothing between bulb and dragon, replaced every 6–12 months regardless of whether it still produces visible light.
Bearded dragons should be kept at roughly 30–40% ambient humidity. Sustained humidity above 50% significantly raises the risk of respiratory infection in this dry-climate species — brief daily misting or a shallow soak handles hydration and shedding needs without pushing ambient humidity up long-term.