While you can still buy traditional glass designs, the most accurate way to measure the temperature of your room, baby's nursery, greenhouse or even your wine cellar is with a digital wall thermometer. Many also double up as hydrometers, which measure humidity, as well as syncing with your phone or device and your smart home setup too.
However, some people may find all of these new functions confusing. To help you sift through the specs and find the perfect room thermometer for your home, we've compiled a feature-led buying guide. Then, check out our top 10 recommendations available to order online from Amazon, Boots and Argos.
For those after a quick look, here is our Top 5:
For a more in-depth look at the comprehensive top 10 selection, make sure to read on to learn more about the different types of room thermometers available and understand how our ranking was determined.
This article's chosen EC site price listings are reflective of its publishing date.
Image | 1 ![]() Touloube | 2 ![]() Govee | 3 ![]() Kalawen | 4 ![]() Tommee Tippee | 5 ![]() Govee | 6 ![]() SwitchBot | 7 ![]() ThermoPro | 8 ![]() Oria | 9 ![]() JIGUOOR | 10 ![]() Tommee Tippee |
---|---|---|---|---|---|---|---|---|---|---|
Name | Thermometer and WiFi Weather Station | Room Thermometer and Hygrometer | Weather Station | Groegg2 Room Thermometer and Night Light | Room Thermometer and Hygrometer | Thermometer and Hygrometer | TP49 Digital Indoor Thermometer | Digital Thermometer With 3 Sensors | Digital Humidity Meter and Thermometer | Closer to Nature Bath and Room Thermometer |
Features | A Smart Temperature and Weather Station With Style | Monitor Your Greenhouse or Wine Cellar From Afar | Includes Three Sensors With Their Own Screens | The Best Baby Room Thermometer on the Market | Feature-Free Sensors Keep It Simple | A Smart System That's Compatible With Alexa | An Affordable Way to Display the Essentials | A Wealth of Info for up to Three Rooms | All the Data You Need in a Neat Package | Monitor Your Baby's Room and Bath Temperature |
Price | £73.99 | £13.99 | £40.99 | £16.99 | £27.99 | £15.99 | £16.99 | £23.57 | £11.99 | £13.99 |
Type | Indoor/outdoor thermometer | Indoor thermometer | Indoor/outdoor thermometer | Baby room thermometer | Indoor thermometer | Indoor thermometer | Indoor thermometer | Indoor/outdoor thermometer | Indoor thermometer | Baby room thermometer |
Accuracy | ±1°C, ±2% humidity, 2s refresh | ±0.32°C, ±3% humidity | - | - | ±0.3℃, 3% humidity, 2s refresh | ±0.4°C, ±4% humidity, 4s refresh | 10s refresh | ±1°C, ±5% humidity, 5s refresh | ±1℃, ±5% humidity, 15s refresh | Refreshes in seconds |
Range | - | -20℃ to 60℃, 0 to 99% humidity, 2s refresh | 9.9 to 50°C indoor, 40 to 70°C remote, 20% to 95% humidity | - | - | -20 to 80°C | -50 to 70°C, 10 to 99% humidity | -40 to 70°C, 20 to 95% humidity | 0 to 50℃, 20 to 95% humidity | - |
Display Features | Min. and max. temperature, ℃ to F, forecasts, clock, date | Min. and max. temperatures, ℃ to F | Min. and max. temperature, ℃ to F, forecasts, clock, date, alarm | Large display, colour changes to reflect temperature | - | Battery level, ℃ to F | ℃ to F | Touchscreen, battery level, trends, ℃ to F | Min. and max. temperature level, ℃ to F | LED warning light |
Backlight | Yes | Yes | LCD colour display | Yes | - | Yes | No | Yes | No | No |
Hygrometer | Yes, with comfort level and weather | Yes, with comfort level | Yes, with comfort level and weather | No | Yes | Yes | Yes, with comfort level | Yes, with comfort level | Yes, with comfort level | No |
Connectivity | App | App | No | No | App | App, Alexa, Google Home, HomePod, IFTTT | No | No | No | No |
Dimensions | 19.4 x 18.7 x 6.4 cm | 10 x 7 x 3 cm | 29 x 26 x 6.5 cm | 9 x 10 x 22 cm | 7.2 x 7.2 x 2.4 cm | 11 x 3 x 8.51 cm | 7.8 x 6 x 2.2 cm | 9.6 x 11.4 cm | 8.5 x 2.5 cm | 4.6 x 10.2 x 10.5 cm |
Link |
There are three main types of room thermometer and each serves a different purpose, so it's likely that one will be more suitable for your needs. The simplest indoor devices look a bit like a thermostat and can be mounted or placed anywhere in your home. Look for products with additional sensors if you want to record temperatures in more than one room.
Another option is an indoor/outdoor thermometer, which will always come with a sensor that is able, and safe, to be placed externally. As well as displaying both the inside and outside temperature, more advanced models will give you a weather forecast and data on air pressure too.
While you can use any of the above gadgets to monitor the temperature in your child's room while they are sleeping, baby-specific designs may be more suited to the task. Many double up as night lights or bath toys, which are things you'll probably be buying anyway if you have little ones! The latter of these can also measure your baby's bathwater, to ensure a comfortable splashing session.
First things first, you want your thermometer to be accurate — so look for those promising that the reading will be correct to at least ±1°C and will have a quick refresh time (the best on the market recalibrate every two seconds). You'll also want to check whether its range meets your requirements, although most should do so at between -50 and 70°C!
If you're not a Celsius user, check whether the thermometer supports Fahrenheit, and consider whether you'd find a minimum and maximum temperature display useful. Thermometers with this feature will automatically save previous readings, allowing you to keep an eye on changes in the room's climate.
Finally, it's worth examining the size of both the unit and the display. Some will have smaller screens that you may not be able to see from a distance, whereas others will prioritise certain readings in larger digits. A backlight is also handy to have, in case you're placing the gadget somewhere dark or want to be able to take readings at night.
Depending on where you live and whether you or someone in your household suffers from allergies, asthma or skin issues, you might want to keep an eye on the humidity in your home. This feature will also be of interest if you want to monitor moisture levels in a greenhouse or to keep an exotic pet comfortable.
A good hygrometer will offer a range between 10% and 99% RH (relative humidity), with some helpfully displaying whether the current reading is considered good, bad or satisfactory. The recommended level is 40 to 50% and, ideally, your chosen thermometer should offer accuracy of at least ±5% RH.
Want the convenience of being able to monitor temperatures and receive alerts from a space further away in the home like a cellar, attic or greenhouse? Consider thermometers that come with app connectivity. These are also great for those who want to check levels without disturbing a sleeping baby!
You have two options here: a regular LCD display unit that comes with an app or a sensor with no display whose readings you will only be able to see from its app. For either, you might want to check the range if you plan on placing the thermometer somewhere further away like a greenhouse.
Smarter still, it's also possible to link some gadgets with your home automation system so you can control temperatures from afar. If you'd like to connect to more than one thermometer in a number of rooms, check how many units the app can sync with. You might also want to note whether the data it records can be stored on a cloud for even more convenience.
Further upgrade your home by taking a look at the Best Smart Locks.
This ranking has been compiled by the writing team at mybest UK via careful evaluation of the points made in the buying guide and thorough research of each product and comparing multiple verified customer reviews across the EC sites used.
£73.99
Type | Indoor/outdoor thermometer |
---|---|
Accuracy | ±1°C, ±2% humidity, 2s refresh |
Range | - |
Display Features | Min. and max. temperature, ℃ to F, forecasts, clock, date |
Backlight | Yes |
Hygrometer | Yes, with comfort level and weather |
Connectivity | App |
Dimensions | 19.4 x 18.7 x 6.4 cm |
£13.99
Type | Indoor thermometer |
---|---|
Accuracy | ±0.32°C, ±3% humidity |
Range | -20℃ to 60℃, 0 to 99% humidity, 2s refresh |
Display Features | Min. and max. temperatures, ℃ to F |
Backlight | Yes |
Hygrometer | Yes, with comfort level |
Connectivity | App |
Dimensions | 10 x 7 x 3 cm |
£40.99
Type | Indoor/outdoor thermometer |
---|---|
Accuracy | - |
Range | 9.9 to 50°C indoor, 40 to 70°C remote, 20% to 95% humidity |
Display Features | Min. and max. temperature, ℃ to F, forecasts, clock, date, alarm |
Backlight | LCD colour display |
Hygrometer | Yes, with comfort level and weather |
Connectivity | No |
Dimensions | 29 x 26 x 6.5 cm |
£16.99
Type | Baby room thermometer |
---|---|
Accuracy | - |
Range | - |
Display Features | Large display, colour changes to reflect temperature |
Backlight | Yes |
Hygrometer | No |
Connectivity | No |
Dimensions | 9 x 10 x 22 cm |
£27.99
Type | Indoor thermometer |
---|---|
Accuracy | ±0.3℃, 3% humidity, 2s refresh |
Range | - |
Display Features | - |
Backlight | - |
Hygrometer | Yes |
Connectivity | App |
Dimensions | 7.2 x 7.2 x 2.4 cm |
£15.99
Type | Indoor thermometer |
---|---|
Accuracy | ±0.4°C, ±4% humidity, 4s refresh |
Range | -20 to 80°C |
Display Features | Battery level, ℃ to F |
Backlight | Yes |
Hygrometer | Yes |
Connectivity | App, Alexa, Google Home, HomePod, IFTTT |
Dimensions | 11 x 3 x 8.51 cm |
Pack of 3
£16.99
Type | Indoor thermometer |
---|---|
Accuracy | 10s refresh |
Range | -50 to 70°C, 10 to 99% humidity |
Display Features | ℃ to F |
Backlight | No |
Hygrometer | Yes, with comfort level |
Connectivity | No |
Dimensions | 7.8 x 6 x 2.2 cm |
£23.57
Type | Indoor/outdoor thermometer |
---|---|
Accuracy | ±1°C, ±5% humidity, 5s refresh |
Range | -40 to 70°C, 20 to 95% humidity |
Display Features | Touchscreen, battery level, trends, ℃ to F |
Backlight | Yes |
Hygrometer | Yes, with comfort level |
Connectivity | No |
Dimensions | 9.6 x 11.4 cm |
£11.99
Type | Indoor thermometer |
---|---|
Accuracy | ±1℃, ±5% humidity, 15s refresh |
Range | 0 to 50℃, 20 to 95% humidity |
Display Features | Min. and max. temperature level, ℃ to F |
Backlight | No |
Hygrometer | Yes, with comfort level |
Connectivity | No |
Dimensions | 8.5 x 2.5 cm |
£13.99
Type | Baby room thermometer |
---|---|
Accuracy | Refreshes in seconds |
Range | - |
Display Features | LED warning light |
Backlight | No |
Hygrometer | No |
Connectivity | No |
Dimensions | 4.6 x 10.2 x 10.5 cm |
Household goods
PC and cameras
Home appliances and electronics
Cosmetics and skincare
Health
Food and drinks
Kitchen supplies
Clothing
Shoes
Accessories
Kids and baby
Interior and furniture
Hobbies
Outdoor
DIY and tools
Sports and fitness
Pets
Books, CDs, DVDs
Games
Cars and motorcycles
Gifts
Housing equipment and renovation
Travel
Smartphones and mobile phones
Music
Smartphone applications