Highlands heat: a bigger daily swing
Veiled chameleons come from the highland plateaus of Yemen and Saudi Arabia, where days are warm, nights are cool and the air is drier than in a rainforest chameleon's home. Their heating should reflect that swing. An adult male basks at a spot around 85 to 90°F; the cage below and around him should sit in the 70s with shaded pockets cooler than that; and overnight the enclosure should fall into the 60s. A veiled chameleon kept at one flat, warm temperature around the clock is a common slow-motion problem — appetite, colour and energy all dull — even though every individual reading looked 'warm enough'.
One warm branch in a cool cage
Mount the basking bulb outside the top of the screen cage, above one sturdy horizontal branch in the top corner, and set its distance by measurement: a probe or temperature gun reading on the branch itself, adjusted until the perch reads at target. The rest of the enclosure is unheated by design — dense planting, including one large central plant, creates the shaded middle and lower zones the chameleon retreats to. Do not add a heat mat or a second lamp 'for balance'; a screen cage with one warm corner and a cool body is correct for this species, and the chameleon's own movement between branch and foliage does the rest. Re-check the branch reading when the seasons change or a bulb is replaced.
Burns: the casque is the warning sign
A veiled chameleon's tall casque and spiny back ride closest to the lamp, and they are where thermal burns appear — pale, grey or darkened rough patches along the casque crest and spine. The injury happens quietly because a basking veiled chameleon will hold its position under a too-close bulb rather than move away. Prevention is mechanical: the bulb stays outside the mesh, the fixture is fixed so it cannot slip lower, and the highest branch keeps a measured gap below the screen, accounting for the height of the casque above the branch — the animal's head, not the perch, is the nearest point to the heat. A burn patch, once spotted, means a vet visit, and the lamp distance gets corrected the same day.
Females and youngsters run cooler
Females and juveniles should not be heated to the adult male's numbers. Youngsters bask in the low to mid 80s and overheat and dehydrate faster in a hot cage, so their basking branch sits further from the bulb. Females are deliberately kept toward the low to mid 80s by many keepers: constant high warmth combined with heavy feeding encourages large, frequent egg clutches even without mating, and repeated egg-laying shortens a female's life. A slightly cooler basking spot, combined with measured feeding once she is adult, is the standard keeper's response. Whichever animal you keep, write its specific target down — 'the chameleon's temperature' is not one number across sexes and ages.
The night drop is part of the heating plan
When the lights go out, the heating's job is to get out of the way. Let the cage fall with the room into the 60s; only a house dropping below the high 50s overnight justifies a ceramic emitter on a thermostat, set merely to hold that floor. Any night heat must be light-free, because a glow in the cage disrupts the sleep the cool night is meant to protect. Misting in the early morning then gives the chameleon droplets to drink as it climbs up to bask — the daily cycle working as one system. All of it compresses into a short written routine — basking target, lamp position, night floor — and KinsLe Care Pass hands exactly that to a sitter, so a week of care matches the setup you measured.