Hygrometer · Tapo

Tapo T315 Smart Temperature and Humidity Monitor

Temperature and humidity monitor

Updated October 2026

Quick verdict

A well-matched choice for setting a humidifier or dehumidifier.

Strength
Temperature ±0.3.
Trade-off
Readings need a few hours to settle after moving it.
Right buyer
Setting a humidifier or dehumidifier.
Dimensions (seller)
2.53"W x 2.7"H
Product weight
0.08 kg
Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Why it matters

The Tapo T315 Smart Temperature and Humidity Monitor is a temperature and humidity monitor with a stated temperature accuracy of 0.3 and a humidity range of 0%~99%RH.

A hygrometer tells you whether you need a humidifier or a dehumidifier: aim for 40 to 60 percent relative humidity indoors.

The listing names app control.

Price-wise it sat in the middle third of the 25 hygrometer models we cover when we checked; the button shows today's price.

It qualifies for our list Best Hygrometers for Home, where it is ranked against every model that meets the same rule.

The listing gives dimensions of 2.53 inW x 2.7 inH and a weight of 0.08 kg.

Who it's for, and who should skip it

Good fit if

  • Setting a humidifier or dehumidifier

Look elsewhere if

  • Replacing a CO or smoke alarm

Pros and cons

Pros

  • Temperature ±0.3

Cons

  • Readings need a few hours to settle after moving it

Limitations to weigh

  • Not stated on the Tapo T315 Smart Temperature and Humidity Monitor listing: connectivity, power source. Ask the seller or check the manual before relying on it.

Specifications

The bracket shows where each figure comes from.

Dimensions (seller)2.53"W x 2.7"HRetailer
Product weight0.08 kgRetailer
Mounting / installationTabletopRetailer
Humidity range0%~99%RHRetailer
Temperature accuracy0.3Retailer
Pack count1Retailer
In the boxTapo T315 × 1 AAA/LR03 battery × 2 3M Adhesive × 1 Quick Start Guide × 1Retailer

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Final verdict

A well-matched choice for setting a humidifier or dehumidifier. Confirm the model it fits before ordering.

Where to buy

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

Where should I put the Tapo T315 Smart Temperature and Humidity Monitor?
At breathing height in the room you use most, away from windows, vents, humidifiers and direct sun; give it an hour to settle after moving it.