10 Best Best Pool Thermometers of 2025

Tested and Reviewed: Top 10 Best Pool Thermometers deals with expert ratings from 8.1 to a perfect 10

July 2025 Edition

Editor's Choice

9.7

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eLander

[Large Floating Pool Thermometer] eLander Pro Water Thermometers, for Outdoor & Indoor Swimming Pools, Spas, Hot Tubs, Fish Ponds

10% OffFree Shipping

Editor's bottom line:

“This best pool thermometers is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Measures pool and spa water temperature and provide accurate reading
Large temperature reading display, in Fahrenheit and Celsius. Reads Up to 120 Fahrenheit and 50 Celsius
Premium quality, Built from Durable Material & Shatter Resistant
For All Outdoor & Indoor Swimming Pools, Spas, Hot Tubs, Aquariums & Fish Ponds

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Picked by 261 people today

9.5

Save 25%

U.S. Pool Supply

U.S. Pool Supply Floating Buoy Pool Thermometer with Jumbo Easy-to-Read Temperature Display

25% OffFree Shipping

Main Highlights

Both Fahrenheit and Celsius readings
Oversized temperature reading display
Floating or submersible thermometer
Ideal for Pools and Spas
Full One Year Warranty

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9.5

XY-WQ

XY-WQ Floating Pool Thermometer, Large Size Easy Read for Water Temperature with String for Outdoor and Indoor Swimming Pools and Spas (Turtle)

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Main Highlights

Includes rope tether to keep the thermometer from floating away.
The pool thermometer liquid ingredients: Water 90.1%; Liquid Nitrogen 9.9%.
Temperature reading range20 to 120 °F / -10 to 50 °C.
Suitable for Paddling Pools, Swimming Pools, Hot tubs, Baby Pool, Fish ponds, Spas and Large Aquariums, etc.
No more guesswork with accurate temperature readings.

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9.2

Unipool

Floating Pool Thermometer, Large Display with String Easy to Read, Shatter Resistant, for Outdoor & Indoor Swimming Pools, Spas, Hot Tubs & Aquariums (Turtle)

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Main Highlights

Innovative Turtle styling designThe Turtle Style Swimming Pool Thermometer for Cold Plunge, It is in superior quality , and built from durable material & shatter resistantIt has excellent comprehensive physical and mechanical properties.
Clearly Temperature ReadingWith a large temperature reading display in Fahrenheit and Celsius.Reads Up to 120 Fahrenheit and 50 Celsius.
Easy to useThis large pool thermometer used to measuring pool and spa water temperature and provide accurate reading in both Fahrenheit and Celsius.Directly put the temperature into the water, generally need 1-2 minutes, move out of the water to read the degree.With a light weight,it's convenient for you to carry anywhere or stick to the place you frequently use.
Multi-scenario applyFloats on water's surface for easy access and quick readings,and widely use in all outdoor & indoor swimming pools, spas, hot tubs, aquariums & fish ponds.
After-Sale WarrantyUnipool pool thermometer are made by good quality, ,to ensure you are 100% satisfied. If your thermometer has any quality problems,We will do our best to bring the best shopping experience.

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9.0

XY-WQ

XY-WQ 2 Pack Floating Pool Thermometer, Large Size Easy Read for Water Temperature with String for Outdoor and Indoor Swimming Pools and Spas

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Main Highlights

Double the Fun: Each set includes two adorable designs - a flamingo and a turtle - that will add a touch of whimsy to your pool or spa.
Keep your pool or spa at the perfect temperature with our easy-to-read thermometer. Temperature reading range20 to 120 °F / -10 to 50 °C.
Large size and clear display make it easy to read from a distance. The pool thermometer liquid ingredients: Water 90.1%; Kerosene 9.9%.
Includes a rope tether to keep the thermometer from floating away.
Suitable for use in a variety of water sources, including swimming pools, hot tubs, baby pools, fish ponds, spas, large aquariums, and more.

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Best Value

8.8

Save 43%

Pentair

Pentair R141036 127 Tube Thermometer with ABS Case and 3-Feet Cord

43% Off

Main Highlights

Tube thermometer
High-quality pool and spa thermometers help deliver accurate temperature readings for greater enjoyment of recreational water
Pool thermometers also provide crucial information about the performance of pool heating systems
Comes with ABS case and 3-feet cord
Measures 8-1/4-inch length by 9-3/4-inch height by 8-1/4-inch width

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8.6

WEBEST

Digital Pool Thermometer – IPX-8 Waterproof Swimming Pool Thermometer Floating Easy Read, Environment-Friendly Solar-Powered Temperature Gauge for Swimming Pools, Spa, Hot Tubs

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Main Highlights

Solar-Powered and Environment-Friendly: The WEBEST swimming pool thermometer floating easy read is equipped with a solar battery that charges under sunlight, making it an energy-efficient and environmentally friendly choice for monitoring your pool's temperature.
IPX-8 Waterproof Design: With its IPX-8 waterproof rating, WEBEST floating pool thermometer is built to withstand water immersion, ensuring accurate temperature readings even when submerged in the pool.
Easy Reading LCD Screen: The large, easy-to-read LCD screen provides clear and precise temperature measurements in both Celsius and Fahrenheit, allowing you to monitor your pool temperature with ease by WEBEST digital pool thermometer floating.
More Accurate Measurement: The WEBEST swimming pool temperature gauge offers a measuring range of -20°C to +50°C (-4°F to 122°F) with an accuracy of +/-1°C (2°F) between 0°C to 50°C, and +/-2°C (4°F) outside of that range. This ensures you get accurate readings every time.
Durable Construction with String: Made from high-quality materials, WEBEST pool temperature thermometer is built to last. It features a durable construction that can withstand the elements and comes with a string for easy retrieval and secure attachment.

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8.3

Save 11%

ThermoPro

ThermoPro Digital Pool Thermometer Floating Easy Read, Large Size Water Thermometer for Cold Plunge, IPX8 Waterproof Water Temperature Thermometer for Hot Tub/Ice Bath/Swimming Pool/SPA/Aquarium/Pond

11% OffFree Shipping

Main Highlights

High Acurracy: This floating pool thermometer features highly precise sensor, accurate to ±0.9(±.0.5) in the temperature range of 32°F to 140°F. Sensor temperature range: -40-158, suitable for ice bath tubs, cold plunge, babybath, hot springs and aquarium
500FT Long Range: With RF technology for more stable connectivity, this pool temperature thermometer allows you to monitor the pool temperature outdoors from your house up to 500FT, checking the pool temp without going outside!
Large Backlit Display: Pool thermometer wireless with temperature and humidity monitor features large digits and backlight to ensure easy reading even in dim light conditions; All time/24 hours max and min record helps you track temperatures throughout the day!
More Durable Sensor: Floating thermometer for pool is designed with IPX8 waterproof and high-quality ABS materials, ensuring it can withstand exposure to pool water and various weather conditions for long time!
Easy to Use: The pool temp floater and receiver are automatically paired, making it go straight out of the box for use, no more tedious setup! Powered by 3A batterys (included)

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8.1

Pircaath

Pircaath 2025 Upgrade Digital Pool Thermometer Floating Easy Read, Solar Pool Thermometer with Light Show, Large Screen Pool Temperature Thermometer, IP68 Waterproof Pool Water Thermometer for Hot Tub

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Main Highlights

Fantastic Colorful Light Show: Imagine your pool giving off a mesmerizing light show as the sun goes down. This is Pircaath's unique digital pool thermometer, the only one that projects a light onto the bottom of your pool. It includes 7 dynamic and static light modes to choose from, projecting vivid diamond light patterns in your water. Pircaath light up pool thermometer extends the art of sunset into the night and makes your backyard look vibrant and alive.
Solar Pool Thermometer: The floating pool thermometer is powered by solar energy. It is fully charged in the sun during the day and auto turns on the light at night when the button is turned on. Never need to change a battery, we greatly reduce our dependence on traditional batteries and make a positive contribution to environmental protection. Meanwhile, the solar light show adds extra performance to it, adding more atmosphere to your water activities at night.
Integrated Seal Design: Our pool temperature thermometer is designed with the highest level of IP68 waterproof, and it's improved compared with previous version. The upgraded waterproofness and the double sealing ring design can 100% ensure that the internal parts of the thermometer will not be soaked by water. This can effectively extends the life of the pool thermometer, allowing the pool temperature gauge to accompany you through several summers.
Accurate and Easy to Read: The probe on this pool thermometer adopts a high precision sensor, which can reach up to 5 inches underwater to provide you with accurate water temperatures. It also features a large LCD display with a 35° tilt, which allows you to clearly see the reading on the thermometer without having to bend over. If you want an accurate and easy to read digital thermometer, Pircaath floating hot tub thermometer must be the best choice.
User-friendly: This pool temperature gauge can be switched between Celsius and Fahrenheit. The temperature measurement range is -4 to 158, which is perfect whether you use it in a hot tub, spa or ice bath. It can record the highest and lowest temperatures of the day, allowing you to closely track changes in water temperature. Pircaath pool thermometers are protected by patent No. US D1027680 S/EU 015048299-0001/CN ZL202420149256.8

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8.1

Save 13%

GoveeLife

GoveeLife Smart Pool Thermometer with WiFi Gateway, Digital Swimming Water Thermometer Temperature Monitor with IPX7 Waterproof, Remote App Notification Alert for Ice Bath Tub, Fishbowl, Pond, Hot Tub

13% OffFree Shipping

Main Highlights

Smart Remote Monitoring: With a connected 433 gateway (up to 328ft /100m), you can easily monitor your water temperature data in real time from anywhere with the App. The Wi-Fi gateway can be paired with up to 10 sensors, extending your monitoring range to any location indoor and outdoor.
More Accurate: The pool thermometer sensor can detect temperatures ranging from -4°F to 158°F, can accurately detect the temperature change of ±0.9°F, refresh speed up to 2S, double-click the internal button to switch °F/°C.
IPX7 Waterproof Protection: The GoveeLife Pool Thermometer is waterproof and can accurately measure temperature even when entering the water. You don't have to worry about water damaging it at all.
Free Date Storage & Export: The GoveeLife pool temperature monitor supports online viewing of 20-day data graphs and export of data recorded over the past 2 years. Ideal for swimming pools, paddling pools, hot tubs, fish ponds, jacuzzis, spas, etc.
Long-Lasting: The pool thermometer is powered by 2 AAA batteries, divided into standard mode and powersaving mode. Battery life is 1 year in standard mode and 3 years in powersaving mode (APP setting). When the battery is low, an alert icon appears on the screen and the app will also send a low battery notification. The product can also be linked to GoveeLife's wallsocket products to automatically turn the pool heat on and off.
Easy to Use and Install: The GoveeLife Pool Thermometer also comes with a rope to prevent the pool thermometer from floating away while taking readings! Need attention: The included orange loop rubber is replaceable to make the pool thermometer stand out on the water!
Need attention: It is better not to have obstacles between the gateway and the sub-device, otherwise it may affect the stability of signal transmission.(2.4Ghz WiFi Only)

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Our Best Overall Choice

Best Choice

9.7

eLander

[Large Floating Pool Thermometer] eLander Pro Water Thermometers, for Outdoor & Indoor Swimming Pools, Spas, Hot Tubs, Fish Ponds

10% OffFree Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Measures pool and spa water temperature and provide accurate reading
Large temperature reading display, in Fahrenheit and Celsius. Reads Up to 120 Fahrenheit and 50 Celsius
Premium quality, Built from Durable Material & Shatter Resistant
For All Outdoor & Indoor Swimming Pools, Spas, Hot Tubs, Aquariums & Fish Ponds

Show Price

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