How do I maintain the right temperature gradient in my leopard gecko's enclosure during summer?
Keep the basking/warm side at 88–92°F (31–33°C) and the cool side at 75–80°F (24–27°C) to mimic their natural habitat.
Temperature Gradient
In summer, maintaining a temperature gradient is crucial for your leopard gecko's health. The warm side should be 88–92°F (31–33°C) to allow them to bask and regulate their body temperature. The cool side should be 75–80°F (24–27°C) to provide a cooler retreat.
This gradient is essential because leopard geckos are ectothermic, meaning they rely on external heat sources to regulate their body temperature. They self-regulate by moving between the warm and cool sides of the enclosure based on their needs.
- Warm side: 88–92°F (31–33°C)
- Cool side: 75–80°F (24–27°C)
- Maintain a 10–15°F (5.5–8.3°C) temperature gradient
- Use a heat lamp or under-tank heater on the warm side
- Monitor with a digital thermometer at the gecko's level
Controlling Temperature
To control the temperature on the warm side, use a heat lamp with a thermostat to maintain the desired temperature. Place the lamp above the basking area, ensuring it doesn't touch the enclosure walls.
For the cool side, avoid direct heat sources. Instead, use a cool tile or a temperature gradient mat. Ensure the cool side is at least 6 inches away from the warm side.
Use a hygrometer to measure humidity, as it can affect temperature regulation. Maintain humidity levels between 30% and 40% on the warm side and 40% to 50% on the cool side.
- Use a heat lamp with a thermostat
- Place the lamp 6–12 inches above the basking area
- Use a cool tile or temperature gradient mat on the cool side
- Monitor humidity with a hygrometer
- Maintain humidity levels between 30% and 40% on the warm side
Signs of Temperature Imbalance
If the temperature is too high, your gecko may appear lethargic, have open mouth breathing, or exhibit aggression. Conversely, if it's too low, they may be inactive, have a slower metabolism, or be more susceptible to respiratory infections.
Regularly check the temperature at the gecko's level to ensure it's within the desired range. Adjust the heat source as needed.
- Lethargy or aggression at high temperatures
- Inactivity or slower metabolism at low temperatures
- Check temperature at the gecko's level
- Adjust heat source if necessary
- Monitor for signs of respiratory infection
Lighting
Leopard geckos are crepuscular/nocturnal, so they require a 12-hour light/dark cycle. Use a timer to maintain this cycle. During the day, provide a UVB light for 10–12 hours to ensure they receive adequate UVB radiation for vitamin D3 synthesis.
Ensure the UVB light is placed above the enclosure and not directly on the gecko to prevent overheating.
- 12-hour light/dark cycle
- Use a timer to maintain the cycle
- Provide UVB light for 10–12 hours
- Place UVB light above the enclosure
- Avoid direct exposure to UVB light
Keep reading about Leopard Gecko: Leopard Gecko care sheet
Related questions
How often should I check the temperature in my gecko's enclosure?
Check the temperature at least twice a day, especially during the hottest and coldest parts of the day.
What should I do if my gecko's enclosure is too hot?
Turn off the heat lamp, increase ventilation, or move the gecko to a cooler part of the enclosure.
How can I tell if my gecko is too cold?
Look for signs of inactivity, a slower metabolism, or a hunched posture. If you suspect your gecko is too cold, move it to a warmer part of the enclosure.
Not veterinary advice. This guide covers husbandry — housing, feeding, cleaning and handling. If your leopard gecko is injured, off food unusually long, or behaving abnormally, contact a veterinarian.