Leachianus Gecko Temperature & Humidity

Leachianus Gecko Temperature & Humidity Guide

Leachianus geckos come from the forests of New Caledonia and require cool, humid conditions to thrive. As the world’s largest gecko, they have the same fundamental environmental requirements as other New Caledonian species, but their larger enclosures require a little more thought to heat and humidify evenly.

Back to the Leachianus Gecko Care Sheet | Gecko Care Hub

Temperature

Ideal Temperature Range

Daytime ambient temperature: 22–26°C (72–79°F)
Night-time temperature: Can drop to 18–21°C (64–70°F) — a natural cool-down overnight is beneficial
Maximum safe temperature: Do not exceed 28–29°C for any extended period

Most UK homes fall comfortably within the ideal daytime range for much of the year. Leachianus geckos are more tolerant of slightly warmer conditions than crested or Chahoua geckos, but should never be exposed to prolonged heat above 29°C.

UK-Specific Advice

Summer heatwaves: Temperatures above 29°C can be dangerous. Keep enclosures away from south-facing windows, use fans to cool the room, and monitor closely during hot spells.
Winter cold: If your home drops below 18°C overnight, use a thermostat-controlled heat source to maintain a safe minimum. Large enclosures may need more than one heat source to warm evenly.

Heating Equipment

Heat mat with thermostat: Fix to the side of the enclosure. Set to maintain a minimum of 20°C. Always use a thermostat.
Low-wattage ceramic heat emitter: Better suited to larger Leachianus enclosures. Produces heat without light and can warm a bigger space more effectively than a mat alone.
Radiant heat panels: An option for very large or custom enclosures — provide gentle, even overhead warmth. Must be thermostat-controlled.
Avoid heat rocks and under-tank heaters placed on the floor.

Monitoring Temperature

Use a digital thermometer with a probe or an infrared temperature gun. For large enclosures, check temperatures at multiple points — ground level, mid-height, and near the top — to ensure the full space is within the correct range.

Humidity

Target Humidity Levels

Daytime humidity: 60–70% — allow a partial dry-out period after misting
Night-time humidity: 80–90% after evening misting

Leachianus geckos require higher humidity than gargoyle geckos and broadly similar levels to Chahoua. Consistent humidity is particularly important for healthy shedding and hydration in such a large gecko.

Misting Routine

Morning mist: A light misting to raise humidity after the overnight dry-out period
Evening mist: A thorough misting ahead of the gecko’s active overnight period
Allow the enclosure to partially dry out between mistings to prevent bacterial and mould growth
Mist walls, plants and décor rather than directly onto the gecko
Use dechlorinated or filtered water where possible
Large enclosures may benefit from an automatic misting system for consistent results

Increasing Humidity in Large Enclosures

Cover part of the mesh top or sides with glass or acrylic to reduce evaporation
Add live plants — these transpire and naturally raise humidity
Use a deep, moisture-retaining substrate such as coconut fibre or a bioactive mix
PVC enclosures retain humidity far better than glass for large setups
An automatic misting system is highly recommended for Leachianus enclosures

Ventilation

Even at high humidity, good airflow is essential. Stagnant wet conditions cause mould, bacteria and respiratory infections. Ensure fresh air can circulate through the enclosure at all times.

Monitoring Humidity

Use a digital hygrometer at mid-height in the enclosure. For large enclosures, consider a second gauge at ground level to monitor the full humidity gradient your gecko experiences.

Shedding and Humidity

Adequate humidity is critical during shedding. Leachianus geckos shed in large pieces and need sufficient moisture to do so cleanly. Signs of an approaching shed include dull, greying skin and reduced appetite. Increase misting slightly and provide a large humid hide lined with damp sphagnum moss. Check feet and toes after each shed and address any retained shed promptly.

Seasonal Variation

A slight seasonal drop in temperature and humidity in winter mirrors New Caledonia’s dry season and can be beneficial for breeding. UK central heating naturally reduces indoor humidity in winter — increase misting frequency or partially cover the enclosure lid during colder months to compensate.