Your summer setup check

The enclosure you dialed in over winter was built for a colder house. Now the furnace is off, the windows catch afternoon sun, and the room your reptile lives in climbs a few degrees every afternoon. Those few degrees move the whole setup. A basking spot that read 95°F in February can push past 100°F by July without you touching a dial.

Start with your thermometer, and read it more than once. Check the basking zone and the cool end first thing in the morning, again mid-afternoon when the room peaks, and once after dark. You want the full range across the day. The mid-afternoon peak is the one that catches people out.

The cool side matters most in summer. Your reptile cools itself by moving away from heat, so it needs a retreat that stays comfortable. If the cool end climbs with the rest of the room, your animal loses its only way to regulate. Move the enclosure off direct window light, raise the heat lamp a few inches, or drop the wattage if the whole tank runs warm.

Water goes faster when it's hot. Reptiles drink and soak more in summer, and a bowl that lasted two days in winter can run dry by the next morning. Fill it daily and expect more soaking as the temperature rises.

Humidity drops once the air conditioning comes on. Cooled air carries less moisture, and species that need damp air can struggle to shed. A hygrometer shows you where you stand. If the number falls, add a second misting or a wider water dish.

None of this takes a rebuild, but a change in season is usually a great reminder that your tank could use a full substrate change and cleanup. Read your temperatures across the day, protect the cool side, keep the water full, and watch the humidity. That carries most reptiles through a Canadian summer with air conditioning on in the house without trouble.