This tool provides a general estimate and does not replace professional veterinary advice.
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What is the Tarantula Temperature Range Checker?
The Tarantula Temperature Range Checker checks whether enclosure temperature is within the safe range for tarantulas. Getting the environment wrong is one of the fastest ways for an otherwise well-cared-for animal to get sick, many species are far less tolerant of temperature or humidity swings than they appear.
Tarantulas generally live 10-25 years when they are well looked after. Diet-wise they are an insectivore, which shapes almost every feeding decision you make. Terrestrial species need more floor space than height, with substrate deep enough to burrow and no more than 1.5 times their leg span of climbing room, since a fall can rupture the abdomen. Keep an eye out for fall injury from over-tall enclosures, dehydration, failed molt. These are the conditions tarantulas are most commonly seen for.
Tarantula quick facts
| Measure | Tarantula |
|---|---|
| Typical lifespan | 10–25 years |
| Adult weight | 0.7–5.3 oz (20–150 g) |
| Diet | Insectivore |
| Mature at | About 3 years |
| Clutch size | 50–2000 eggs |
| Humidity | 65–75% |
How does the Tarantula Temperature Range Checker work?
The safe range is drawn from husbandry references for tarantulas, since the right environment varies significantly between species. Use it to know roughly where you stand and what to ask about, not to rule anything in or out on its own.
What changes the answer
- Time of day and season: since ambient conditions can swing more than expected
- Equipment accuracy: a cheap thermometer or hygrometer can be off by several degrees or percentage points
- Placement of the sensor relative to heat sources, drafts, or water
- The specific microclimate needs of the individual species, which can vary even within a similar-looking enclosure
How do you use the Tarantula Temperature Range Checker?
- Enter the current temperature in whichever unit you use (F, C)
- Answer "Where did you measure?"
- Pick your time of day (Daytime, Night-time)
- Press Calculate, then read the result alongside the sources listed below
One practical habit: revisit this every few months rather than checking once. Tarantulas change as they age, and the right answer changes with them.
For related questions, see the other environment tools or browse every tarantula tool.
Before you rely on this
One number on one day is rarely the full picture. What matters more is the direction of travel: whether your tarantula is trending steadily, drifting, or changing suddenly. A sudden change is always worth a call to your vet, even when the individual figure still falls inside a normal range.
Sources and references
The formulas, reference ranges and species data behind the Tarantula Temperature Range Checker come from these veterinary references, professional bodies and published research.
- University of Florida IFAS ExtensionAquacultureedis.ifas.ufl.edu(opens in a new tab)
- Merck Veterinary ManualReptilesmerckvetmanual.com(opens in a new tab)
- ARAVAssociation of Reptilian and Amphibian Veterinariansarav.org(opens in a new tab)
- Merck Veterinary ManualExotic and Laboratory Animalsmerckvetmanual.com(opens in a new tab)
- RSPCAAdvice and Welfarerspca.org.uk(opens in a new tab)
- Built on veterinary referencesFormulas and ranges come from veterinary manuals, university research and welfare bodies, listed above for you to check.
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