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Best room thermometers and hygrometers compared in 2026

Keeping an eye on room temperature and humidity is easy with a small, low-cost gauge. We compared five options: a toddler nightlight that shows temperature only, a compact thermo-hygrometer, an alarm-clock model and two bathroom clocks. We looked at readings, ranges, extras, mounting, power and price to help you choose.

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Our Top Pick

Best overall

HATUSOKU shows temperature and humidity in a compact unit, with stated accuracy figures, flexible mounting and a one-year warranty for £7.99.

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Room thermometers and hygrometers compared by readings and format

Product	Brand	Price	Retailer	Readings and range	Accuracy	Display or extra functions	Dimensions and weight	Power and mounting
Tommee Tippee GroEgg2 Nightlight and Room Thermometer	Tommee Tippee	£19.98Checked 6 Nov 2026, 17:00 UTC	Amazon UK	Temperature; four colour bands: ≤16°C, 16–20°C, 20–24°C, >24°C	Not supplied	Nightlight; 3 brightness levels; silicone shell	Not supplied	USB power; 200cm cable
HATUSOKU Digital Thermo-Hygrometer	HATUSOKU	£7.99Checked 6 Nov 2026, 17:00 UTC	Amazon UK	Temperature −20 to 70°C; humidity 25–85%RH; updates every 10 sec	Temp ±1°C (10–40°C), ±2°C outside; RH ±5% (35–75%), ±10% outside	Comfort-face display	68 × 77 × 15mm; 53g	AAA battery; stand, magnet, hanging hole
GXSTWU Shower Clock with Thermometer and Hygrometer	GXSTWU	£12.74Checked 6 Nov 2026, 17:00 UTC	Amazon UK	Temperature and humidity; ranges not supplied	Not supplied	12/24-hour clock; count-up/countdown timer; comfort indicator; IP24	105 × 40 × 105mm; 160g	2 AAA included; stand, hole, suction cup, magnet
Indoor Digital Thermometer/Hygrometer with Alarm Clock	Indoor Digital	£4.99Checked 6 Nov 2026, 17:00 UTC	Amazon UK	Temperature −50 to +70°C; humidity 10–99%RH	Temperature ±1°C; humidity ±5%RH	LCD; alarm clock; max/min records	Not supplied	Built-in stand; wall-mount keyhole; power type not supplied
YiChZhe Bathroom Clock with Thermometer/Hygrometer	YiChZhe	£19.98Checked 6 Nov 2026, 17:00 UTC	Amazon UK	Temperature 0–50°C; humidity shown; range not supplied	Not supplied	12/24-hour clock; 99-minute countdown and alarm; IP56	106 × 110 × 35mm; 138g	2 AAA not included; stand, hanging hole, suction cup

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Room thermometers and hygrometers compared

Best for a child's room

Tommee Tippee GroEgg2 Nightlight and Room Thermometer

A toddler nightlight that shows room temperature through colour changes, but does not measure humidity.

The GroEgg2 measures room temperature only and doubles as a nightlight. It shows blue at 16°C and below, yellow from 16 to 20°C, orange from 20 to 24°C and red above 24°C. There are three brightness levels and a soft silicone shell. Power comes from a 200cm USB cable. At £19.98 it is the choice if you want a colour guide rather than numbers.

Price£19.98Checked 6 Nov 2026, 17:00 UTC

Key Details

Readings and range: Temperature; four colour bands: ≤16°C, 16–20°C, 20–24°C, >24°C
Accuracy: Not supplied
Display or extra functions: Nightlight; 3 brightness levels; silicone shell
Dimensions and weight: Not supplied
Power and mounting: USB power; 200cm cable

What We Like

Four colours show temperature at a glance
Three brightness levels and a soft silicone shell

Considerations

No humidity reading
Uses USB power rather than batteries

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Best overall

HATUSOKU Digital Thermo-Hygrometer

A compact gauge that shows temperature and humidity for £7.99, with three ways to mount it.

HATUSOKU shows temperature from -20°C to 70°C and humidity from 25 to 85%RH, with a reading update every 10 seconds. Stated accuracy is ±1°C from 10 to 40°C and ±5% humidity from 35 to 75%, with wider margins outside those bands. A comfort-face display, stand, magnet and hanging hole make placing it easy. It uses an AAA battery and has a one-year warranty.

Price£7.99Checked 6 Nov 2026, 17:00 UTC

Key Details

Readings and range: Temperature −20 to 70°C; humidity 25–85%RH; updates every 10 sec
Accuracy: Temp ±1°C (10–40°C), ±2°C outside; RH ±5% (35–75%), ±10% outside
Display or extra functions: Comfort-face display
Dimensions and weight: 68 × 77 × 15mm; 53g
Power and mounting: AAA battery; stand, magnet, hanging hole

What We Like

Stand, magnet and hanging hole for flexible placing
Accuracy figures and one-year warranty stated

Considerations

Temperature accuracy changes to ±2°C outside 10–40°C

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Best for the shower

GXSTWU Shower Clock with Thermometer and Hygrometer

A bathroom clock with temperature and humidity, a comfort indicator, and count-up and countdown timers.

GXSTWU is a bathroom clock as well as a gauge, showing time, temperature, humidity and a comfort indicator. It has IP24 splash protection, so it is made for splashes rather than submersion. The timer counts up to 99:59 and counts down from 1 to 99 minutes. It measures 105 × 40 × 105mm, weighs 160g and comes with two AAA batteries. Mount it with the stand, suction cup, magnet or hanging hole.

Price£12.74Checked 6 Nov 2026, 17:00 UTC

Key Details

Readings and range: Temperature and humidity; ranges not supplied
Accuracy: Not supplied
Display or extra functions: 12/24-hour clock; count-up/countdown timer; comfort indicator; IP24
Dimensions and weight: 105 × 40 × 105mm; 160g
Power and mounting: 2 AAA included; stand, hole, suction cup, magnet

What We Like

Count-up and countdown timers
Two AAA batteries included, with four mounting options

Considerations

IP24 is splash protection, not immersion protection

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Best budget buy

Indoor Digital Thermometer/Hygrometer with Alarm Clock

The lowest-priced option, with temperature and humidity records plus an alarm clock.

At £4.99 this is the lowest-priced gauge in the group. The LCD shows temperature from -50°C to +70°C with a stated ±1°C accuracy, and humidity from 10 to 99%RH with a stated ±5%RH accuracy. It also works as an alarm clock and records maximum and minimum temperature and humidity. A built-in stand and wall-mount keyhole let you place it on a shelf or hang it up.

Price£4.99Checked 6 Nov 2026, 17:00 UTC

Key Details

Readings and range: Temperature −50 to +70°C; humidity 10–99%RH
Accuracy: Temperature ±1°C; humidity ±5%RH
Display or extra functions: LCD; alarm clock; max/min records
Dimensions and weight: Not supplied
Power and mounting: Built-in stand; wall-mount keyhole; power type not supplied

What We Like

Lowest price at £4.99
Max/min records and alarm clock

Considerations

Fewer mounting options than the HATUSOKU unit

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Best for splash protection

YiChZhe Bathroom Clock with Thermometer/Hygrometer

A bathroom clock with IP56 splash protection, a 99-minute countdown and an alarm.

YiChZhe is a bathroom clock with a thermometer and hygrometer, rated IP56 for splash protection. The temperature display covers 0 to 50°C and it shows time in 12 or 24-hour format. A 99-minute countdown and alarm are included. It measures 106 × 110 × 35mm and weighs 138g. Mount it with the stand, hanging hole or suction cup. Two AAA batteries are not included, and it costs £19.98.

Price£19.98Checked 6 Nov 2026, 17:00 UTC

Key Details

Readings and range: Temperature 0–50°C; humidity shown; range not supplied
Accuracy: Not supplied
Display or extra functions: 12/24-hour clock; 99-minute countdown and alarm; IP56
Dimensions and weight: 106 × 110 × 35mm; 138g
Power and mounting: 2 AAA not included; stand, hanging hole, suction cup

What We Like

IP56 splash protection
Countdown and alarm, with stand, hook or suction mounting

Considerations

Batteries not included
Highest price among the humidity models

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