Keeper guide

Brazilian Red Tarantula Temperature Guide — Nhandu carapoensis

A practical temperature range for Nhandu carapoensis, commonly known as the Brazilian Red Tarantula, is 21–26°C. Stable room conditions matter more than chasing tiny changes on the thermometer.

At a glance

Quick facts

World
New World
Origin
Brazil and Paraguay
Lifestyle
Terrestrial
UK hobby rarity
Uncommon
Maximum size
About 16–18 cm (6.25–7 in)
Growth rate
Fast
Male lifespan
Roughly 3–5 years
Female lifespan
Often 12–18 years
Temperament
Active feeding response; may be skittish and hair-kicky
Venom
Venomous, but bites are not generally regarded as medically significant
Temperature
21–26°C
Moisture / humidity
Moderate moisture gradient with a water dish and good airflow
CITES
Check current CITES rules before cross-border trade

Working temperature range

Keep Nhandu carapoensis around 21–26°C. Use that as a practical captive range and avoid prolonged exposure to temperatures well outside it.

Nhandu carapoensis do not need the enclosure to hit one exact number all day. Normal small room fluctuations are easier to manage than repeated heating and cooling adjustments.

Measure the shelf, not just the room

Check the temperature where the Nhandu carapoensis enclosure actually sits. Shelves near windows, radiators, computers or external walls can differ from the centre of the room.

A thermometer placed near the enclosure gives more useful information for Nhandu carapoensis than a reading taken across the room.

Avoid direct heat on the enclosure

Do not attach a heat mat directly to a Nhandu carapoensis enclosure. Small containers can develop concentrated hot areas that are much warmer than the surrounding room.

If the room is genuinely too cold for Nhandu carapoensis, warm the room instead and check the temperature at enclosure level. That gives a more even and controllable result.

Summer heat

During hot weather, keep Nhandu carapoensis out of direct sunlight and watch rooms that heat up during the afternoon. A closed window area can become much warmer than expected.

Do not respond to a warm day by soaking the Nhandu carapoensis enclosure. Temperature and substrate moisture are separate husbandry issues.

Winter conditions

In winter, check the coldest part of the day where Nhandu carapoensis is kept. Rooms can cool overnight even when daytime readings look comfortable.

If room heating is used, remember that it may also dry Nhandu carapoensis enclosures faster. Adjust watering to the actual drying rate rather than assuming winter always means wetter substrate.

Use behaviour as context

Temperature readings for Nhandu carapoensis should be considered alongside normal feeding, retreat use and moulting. One slightly different reading is less useful than a consistent pattern over time.

If Nhandu carapoensis suddenly changes behaviour, check temperature along with water, moisture and recent disturbance instead of assuming temperature is the only cause.