10 Best Open Water Swimming Thermometer for 2025

TensCare

• Reassurance that the bath water is at an ideal temperature for your little ones
• Quick and easy to read LCD display
• Red warning light illuminates when the water temperature is too hot
• Tap to turn on with automatic turn off after an hour
• Safe, fun and encourages early number recognition for children

Colour Changing Products

• MADE IN THE UK - designed and made in the UK - SHIPPED BY AMAZON from the UK
• EASY TO USE READ- this product is small size, making it ideal to store tidily in the home or to take travelling. The product works on contact with the temperature of the water and does not need to be turned on. Made from 500micron White Polypropylene (Size: 93mm x 110mm)
• ANTI FOG DISPLAY - unlike most digital thermometers, the display on this product does not mist up when the thermometer comes into contact with warm water and will stay visible throughout the user experience. This product is watertight and does not take on water or leak
• NON BATTERY PRODUCT - this thermometer does not need batteries and only relies on ambient lighting to view the LCD display
• FAST AND ACCURATE DISPLAY - the liquid crystal technology used on this product ensures that an accurate temperature reading is displayed

Nuby

• 3-in-1 Design - clock, timer and thermometer
• Fast and accurate easy to read LCD screen
• Flashes and beeps when water is too hot or too cold
• Floats in the water
• Temperature in Celsius or Fahrenheit

Babyono

• Dimensions Giraffe: Height 15 cm x Width (Top - 7 cm; Middle - 3 cm; Bottom - 4.5 cm)
• Age: 0+
• BabyOne floating bath thermometer will help you reach and maintain appropriate baby water temperature safely and reliably.
• The thermometer floats on the water during the whole bath thus enabling you to keep constant control of the water temperature.
• Make sure the room temperature for a baby bath is at least 22C (71.6F) and baby bath water temperature is 37C (98.6F).

Thermometer World

• ESSENTIAL WATER TEMPERATURE THERMOMETER - A popular water temperature thermometer for measuring bath water.
• CLEAR DESIGN! - This bath thermometer has a white case and black temperature scale making it very clear to read.
• FANTASTIC VALUE - When it comes to bath thermometers, we only offer the best quality and accuracy and this item is just that!
• QUALITY GUARANTEED - Our carefully sourced range of thermometers are manufactured to the highest of standards our customers expect
• EXCEPTIONAL CUSTOMER SERVICE - With a wealth of experience our Thermometer World team are here to help with any questions, advice or tips you may have.

Aycorn

• PEACE OF MIND: As a parent knowing your baby is safe and healthy is the most important thing. Your Aycorn Bath and Room Thermometer removes all guesswork providing ACCURATE and RELIABLE water and air temperatures in seconds ensuring you are never in doubt that your bathtub or nursery is not too hot or cold. It's red LED warning light flashes if the temperature is over 39'c and it also has messages on the display too for extra reassurance.
• SUPERIOR QUALITY: Made from single piece BPA free gentle silicone plastic with a built in sealed battery all thermometers are WATERPROOF and temperature tested before they leave the factory. They are CE approved and meet all relevant EU safety standards making them suitable for use as both a bathtub thermometer and toy perfect even for newborn babies.
• EASY TO USE: Simply TAP AND GO! Within 1 second your thermometer quickly begins to monitor and provide you with stable and accurate MEASUREMENTS YOU CAN TRUST. It's large and easy to read LCD display shows you the current temperature in Celcius and it's auto-shut off saves battery life meaning no fuss constantly changing batteries and reduces the risk of water leaks in the tub!
• MULTI-PURPOSE: Your Aycorn thermometer can easily be used to measure the temperature of your childs bathroom or bedroom. It's stable design in the water means unlike some other designs it's less likely to flip over and misread the temperature as it floats. It's flat feet means it can be freestanding on a shelf or unit in the bedroom making the display easy to monitor.
• 1 YEAR, 100% SATISFACTION GUARANTEE: Love your digital thermometer for children - or your money back! Purchases are backed by our no risk manufacturer 30 day money back guarantee and we are so confident you will love your product we offer you an additional no questions asked 1 year free replacement warranty!

Tommee Tippee

• The closer to nature digital bath and room thermometer will help ensure baby is comfortable during bath and sleep time
• Fast temperature reading
• LED warning light when bath is too hot
• Easy to read LCD screen
• Float in water

Dreambaby

• THE PERFECT TEMPERATURE – Getting the temperature just right for your child can be tricky. Sometimes hand-testing water isn’t always the best method, which is why we created the baby-safe Room & Bath Thermometer. It takes the guesswork out of bath time, adds a flare of fun to the tub, and ensures that your baby’s sensitive skin can be kept safe from harsh temperatures.
• SAFE, FAST, AND ACCURATE – While this thermometer is cute enough to be your child’s favorite toy, it’s durable enough to be your new best friend. BPA-free and tested to the EN71 Standard, this absolutely safe device gives accurate digital temperature readings that automatically update every 10 seconds. This saves you hassle and you can then have complete control to adjust your baby’s bathwater to the temperature you want it to be.
• COLOR CODED INDICATOR – Alongside its precise temperature readings, when used in water the Dreambaby Thermometer features a red indicator light for when the water is too hot and a green indicator light for when the water is too cool. It can also give temperature in Celsius or Fahrenheit!
• ALSO READS ROOM TEMPERATURES – In addition to being used in the tub, the Dreambaby Thermometer can also be placed in your baby’s room, where it will offer the same reliable temperature readings as in the tub. This is perfect for making adjustments to your central thermostat and ensuring that your baby’s room is kept at the right temperature.
• BATTERIES INCLUDED – The Dreambaby Room & Bath Thermometer includes batteries so you can use it right out of the pack! In addition, it features a 30 minute automatic shut off to help preserve the battery lifespan Don’t worry about getting the thermometer wet—it can be safely submerged in water, making it an adorable way to ensure bath time is less stressful and more enjoyable!

Charlemain

• 【Ease of Use】Featured with large clear LCD display, this bath digital thermometer allows you to check your baby’s bath water at a glace, with accurate and reliable responds within 1 second, updates every 5 seconds, no more judge or guess by touch.
• 【Multi-tasking Design】Besides fast view of temperature, this innovative 4-in-1 bath thermometer also works as a clock display, countdown timer and room thermometer. Parents have more accurate control on timing and temperatures, protecting your baby away from too hot or too cold environments.
• 【LED Colour Changing Alert】This temperature-sensitive thermometer automatically rechecks water temperature and changes its LED background colour. Red means too HOT and alarm sound prompt. The temperature can be displayed in Fahrenheit or Celsius.
• 【Smart & Safer】The duck thermometer activated instantly once you put it into water and it will become de-activated once you take it out. Waterproof design to prevent mildew and 100% safe to float and even submerge it under the water.
• 【100% Satisfaction】We strive to ensure every customer is satisfied with our business, friendly and prompt customer service within 24 hours, welcome to contact us.

Colour Change Products

• MADE IN THE UK - SHIPPED BY AMAZON from the UK
• FAST AND ACCURATE DISPLAY - The liquid crystal technology used on this product ensures that an accurate temperature reading is displayed
• EASY TO USE AND READ- Small enough to fit in your hand, it is can be stored easily and is ideal to take travelling. This product works when in contact with water and will read the temperature of the water. Made from 500micron White Polypropylene (Size: 93mm x 110mm)
• ANTI FOG DISPLAY - Unlike most digital thermometers, the display on this product does not mist up when in water vapour. It will stay visible throughout the user experience. This product is watertight and can simply be wiped dry
• NON BATTERY PRODUCT - This thermometer does not need batteries and only relies on ambient lighting to view the LCD display