When it comes to enjoying your swimming pool, knowing the water temperature is crucial. Whether it’s for safety, comfort, or ensuring optimal swimming conditions, investing in one of the best pool thermometers available on Amazon can enhance your experience. Pool thermometers come in various designs and functionalities, offering the ability to monitor water temperatures quickly and accurately. In 2025, the market offers an array of options, so we have done the research for you to identify the top 10 best pool thermometers.

1. AquaVogue Digital Floating Pool Thermometer

View price

• 360° Reading & More Accurate and Sensitive: This swimming pool thermometer features 360° Reading and angled design, allowing you to quickly read data whether you are by the pool or in the water. The pool thermometer uses high-precision sensors to ensure more accurate and reliable data (Accuracy: ±1°F/°C). And the thermometer automatically updates data every 5 seconds, keep you updated on the temperature changes in the swimming pool at all times
• No Fogging & IPX7 Waterproof: The digital swimming pool thermometer is a fully sealed structure, using waterproof rings and ultrasonic technology, with a double-layer waterproof structure. Water vapor is difficult to enter the interior of the product. Floating pool thermometer adopts a waterproof shell, Even when the product is immersed in water, it can ensure accurate readings without affecting normal use.
• Multifunction & Long Range Transmission: The BaldrTherm indoor monitor not only displays water temperature but also detects indoor temperature and humidity. And the digital pool thermometer features a stable transmission range of up to 330 ft.
• Applicable Scenarios: The BaldrTherm floating wireless pool thermometer has a compact and exquisite appearance, making it perfect for use in swimming pools, hot tubs, aquariums, baby showers, spas, koi pools, and other places where liquid temperature needs to be measured.
• Comprehensive After-Sales: Rest assured, your satisfaction is our priority even after your purchase: 1.BaldrTherm offers you an extensive 3-year warranty. 2. Each package includes a detailed instruction manual to guide you every step of the way. 3. Our 24/7 online support is always ready to assist with any inquiries. Please shop with confidence!

View price

The AquaVogue Digital Floating Pool Thermometer is incredibly user-friendly and provides an accurate reading of your pool’s temperature. Designed to float on the water’s surface, this thermometer features a large digital display that’s easy to read from a distance. With its durable construction, it’s both waterproof and resistant to pool chemicals.

Best for: Accurate temperature readings with a digital display

Pros:

• Large digital display for easy reading
• Durable and chemical-resistant
• Simple float design

Cons:

• Batteries need replacement after some time
• May drift away in windy conditions

2. Taylor 9850 Pool and Spa Thermometer

View price

• Tests for Free Chlorine, Bromine and pH
• Features hard shell case, easy to read comparator, .75 ounce reagents, and color coded instructions
• Flip side of the instruction card has dosage charts so you can translate test results into treatment
• Taylor Model: K-1001

View price

The Taylor 9850 is a versatile pool thermometer that can also be used in spas. It has a glass buoy design and features an easy-to-read scale that provides both Celsius and Fahrenheit readings. Being designed for both indoor and outdoor use, this thermometer is perfect for monitoring temperatures in any environment.

Best for: Versatile use in pools and spas

Pros:

• Easy-to-read dual scale
• Suitable for pools and spas
• Durable glass construction

Cons:

• Not digital, some users prefer digital for ease
• Glass may break if dropped

3. Intex Floating Pool Thermometer

View price

• Cardboard treat boxes
• Measure 6. 5 Inch long
• 1 Dozen per set
• Perfect for a pirate party or Treasure hunt
• 6 1/8" X 3 5/8" X 6" Simple assembly required

View price

The Intex Floating Pool Thermometer is a fun and functional addition to any pool. Featuring a colorful design often resembling a cartoon character, it’s great for families with kids. The thermometer provides accurate readings of water temperature and has a temperature range suitable for all pools.

Best for: Family-friendly design, appealing to children

Pros:

• Child-friendly design
• Accurate water temperature readings
• Affordable option

Cons:

• Limited to a specific temperature range
• Not as durable as some competitors

4. Solaxx So Clear Floating Chlorine Dispenser and Pool Thermometer

No products found.

The Solaxx So Clear combines two essential functions: chlorine dispensing and temperature monitoring. This dual-purpose device floats on the surface while keeping your pool chemicals well-dispersed. Its thermometer feature provides temperature readings while adding convenience in monitoring your pool’s sanitation levels.

Best for: Dual functionality for convenience

Pros:

• Combines chlorine dispensing and thermometer
• Floats easily on the water surface
• Precision temperature readings

Cons:

• Larger size may not be suitable for small pools
• Chlorine can affect its durability

5. Dohm Pool Thermometer

View price

• This sensor/transmitter is specially designed for measuring the water temperature in swimming pools, hot tubs, spas and so on. If monitoring ambient/outdoor air temperature, it may be inaccurate
• 【More Durable Sensor】Floating pool thermometer is designed with lPX8 waterproof and high-quality ABS materials, ensuring it can withstand exposure to pool water and various weather conditions for long time! Ensure mental parts are properly aligned and press them together firmly to ensure waterproof performance (The alignment marks on the edges of the upper and lower parts are aligned.)
• 【Higher Accuracy】This pool temperature sensor 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, hot tubs, cold plunge, babybath, hot springs, ponds and aquarium
• 【500FT Longer Range】Using RF technology for more stable connectivity, this pool temperature thermometer maintains a stable connection up to 500 feet, letting you check your pool’s temperature remotely from indoors—no need to step outside!
• 【Larger Backlight Display】 Swimming pool thermometer wireless with temperature and humidity monitor features a large backlit screen for easy readability in low light, along with 24-hour max/min temperature memory to track temperatures throughout the day!

View price

The Dohm Pool Thermometer offers a sleek design that is both stylish and functional. This thermometer includes a built-in stand, allowing it to be placed poolside or used while floating. It features an analog dial for temperature readings, making it easy to monitor without any batteries required.

Best for: Aesthetic and battery-free operation

Pros:

• Sleek, elegant design
• Battery-free and eco-friendly
• Durable and weather-resistant construction

Cons:

• Analog display may require closer inspection
• Not as exact as digital options

6. Poolmaster 50313 Floating Pool Thermometer

View price

• For reading water temperatures in pools and spas this large-profile size features oversize embossed temperature readout
• Floating pool thermometer includes a blue 34-inch all-weather cord, that holds up to treated pool or spa water year after year
• Shatter-resistant thermometer body with temperature readings from 0 to 120 degree F and reads -20 to 50 C
• Alcohol-based indicator and large profile is easy to read in pool water
• Measures approximately 10-inches high x 3-inches wide

View price

Offering both dual Fahrenheit and Celsius readings, the Poolmaster 50313 gives pool owners the ability to monitor water temperature with precision. With its floating design and built-in lanyard for easy retrieval, this thermometer is a practical choice for any pool owner.

Best for: Versatile temperature scale

Pros:

• Integrated lanyard for easy retrieval
• Locking cap for easy storage
• Durable and reliable construction

Cons:

• May need to be retrieved frequently
• The large size may not suit all pools

7. Limei Digital Pool Thermometer

View price

• Self-Sustaining Solar Design：The built-in solar panel delivers non-stop power, eliminating battery changes and maintenance of this digital pool thermometer.
• Accurate & Always Up-to-Date：With its advanced sensor technology, this pool thermometer provides precise temperature measurements, updated every 5 seconds.
• Fog-Resistant & Waterproof Construction：The swimming pool thermometer is IPX7-rated and features ultrasonic sealing to prevent fogging and ensure durability even in heated water environments.
• Clear Dual Display：Designed for easy viewing, this floating pool thermometer features two large, high-contrast screens readable from any position in or around the water.
• One-Touch °F/℃ Conversion：Effortlessly switch between Fahrenheit and Celsius with a single button to match your preferred temperature scale.

View price

The Limei Digital Pool Thermometer is encased in a waterproof housing, making it perfect for outdoor use. This digital thermometer provides clear, easy-to-read results and has a built-in clock and memory feature that stores your previous temperature readings.

Best for: Memory storage and extra functionalities

Pros:

• Built-in memory for tracking temperature changes
• Clear digital display with backlight
• Water-resistant for outdoor use

Cons:

• More expensive than traditional models
• Battery life may be limited

8. Swimways Baby Shark Floating Pool Thermometer

View price

• 【Adorable cartoon design】: This floating pool thermometer features a charming and unique cartoon design, adding fun to your shower and swimming activities
• 【Quality material】: Made from quality PP, this water temperature thermometer is sturdy, ensuring long time use even with repeated exposure to water
• 【Easy to read display】: The pool spa thermometer comes with a clear reading display, covering a temperature range from -10c to 50c/14f to 122f, making it easy to watch water temperature accurately
• 【Versatile functionality】: Designed for multiple uses, this portable thermometer is great not only as a pool temperature gauge but also as an attractive pool decoration
• 【Wide application】: With dimensions of 2.6 cmx19 cm/1.02 inchx7.48 inch, this compact water thermometer is ideal for various settings such as spas, hot tub, ponds, indoor and outdoor pools, ice baths, and showers

View price

This fun and engaging Swimways thermometer features the popular Baby Shark design, making it perfect for families with younger children. It provides accurate water temperature readings while also serving as a playful addition to the pool area.

Best for: Families looking for a fun thermometer

Pros:

• Child-friendly design
• Accurate temperature readings
• Affordable and lightweight

Cons:

• Made of plastic, durability concerns
• Limited temperature range

9. ThermoPro TP65A Digital Thermometer

View price

• Large backlit touchscreen: 4 inches large lcd display features a backlit touchscreen, making the indoor outdoor weather station easier to read in dim light conditions and superbly simple to use
• Wireless temperature and humidity monitor: Measures indoor/outdoor temperatures and humidity percentages; Capable of displaying the readings from up to 3 outdoor remote sensors to monitor multiple locations; Temperature displayed in °f or °c
• Max and min records: All time/24 hours max and min temperature and humidity percentages recorded and displayed on humidity gauge; Temperature/humidity trend arrows indicate whether it’s getting warmer or colder or more humid near the remote sensor
• 500ft remote range: Indoor/outdoor thermometer wireless with 500ft/150m remote range, capable of strong signal penetration (enhanced 915 mhz); tabletop, wall-mountable and magnetic back design
• Multiple placement options: Digital outdoor thermometer, features a magnetic back to allow you to easily attach to any metal surface; a hanging hole for hooks, tabletop for any layout situation, which help you place your outdoor thermometer anywhere to fit your home's needs

View price

The ThermoPro TP65A offers precise temperature readings with a robust wireless range for convenient monitoring. Although primarily designed for home use, it can function effectively for pool conditions, providing an easy way to check temperature from a distance.

Best for: Wireless convenience and precision

Pros:

• Wireless range for monitoring
• Easy-to-read digital display
• Reliable accuracy

Cons:

• Not solely designed for pools, may need adaptation
• Higher price point than basic models

10. AquaChek Pool Thermometer

View price

• This sensor/transmitter is specially designed for measuring the water temperature in swimming pools, hot tubs, spas and so on. If monitoring ambient/outdoor air temperature, it may be inaccurate
• 【More Durable Sensor】Floating pool thermometer is designed with lPX8 waterproof and high-quality ABS materials, ensuring it can withstand exposure to pool water and various weather conditions for long time! Ensure mental parts are properly aligned and press them together firmly to ensure waterproof performance (The alignment marks on the edges of the upper and lower parts are aligned.)
• 【Higher Accuracy】This pool temperature sensor 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, hot tubs, cold plunge, babybath, hot springs, ponds and aquarium
• 【500FT Longer Range】Using RF technology for more stable connectivity, this pool temperature thermometer maintains a stable connection up to 500 feet, letting you check your pool’s temperature remotely from indoors—no need to step outside!
• 【Larger Backlight Display】 Swimming pool thermometer wireless with temperature and humidity monitor features a large backlit screen for easy readability in low light, along with 24-hour max/min temperature memory to track temperatures throughout the day!

View price

The AquaChek Pool Thermometer is a compact and convenient option that offers a simple design and accurate readings. Ideally suited for both pools and spas, its small size makes it easy to store and transport without any frills. It is an excellent value for those looking for basic functionalities without breaking the bank.

Best for: Affordability and portability

Pros:

• Small and portable design
• Accurate temperature readings
• Affordable choice for budget-conscious buyers

Cons:

• Limited features compared to advanced models
• Analog display may not be preferred by some users

In 2025, the market for pool thermometers offers a variety of options to suit every need, from family-friendly designs to advanced digital displays. Whether you prioritize budget, features, or ease of use, there’s a product on Amazon that fits your requirements perfectly. Consider investing in one of these best pool thermometers to elevate your swimming experience.

Buying Guide for Pool Thermometers

When it comes to maintaining your pool, knowing the water temperature is crucial for comfort, safety, and maintenance. A good pool thermometer can help monitor the temperature accurately. Here’s a comprehensive buying guide to ensure you choose the right one for your needs.

Types of Pool Thermometers

1. Floating Thermometers

   • Description: These thermometers float on the surface of the water.
   • Pros: Easy to read and use; often has a decorative design.
   • Cons: Can be affected by wind; might get lost if not tethered.

2. Submersible Thermometers

   • Description: Designed to be placed beneath the water.
   • Pros: More stable and less likely to be swept away by wind; less exposure to the elements.
   • Cons: May be harder to read depending on the placement.

3. Digital Thermometers

   • Description: Electronic devices that give a digital readout.
   • Pros: Often more accurate; usually provides quick readings; might have additional features like alarms.
   • Cons: Requires batteries and may be more expensive.

4. Infrared Thermometers

   • Description: This non-contact type uses infrared technology to measure the surface temperature.
   • Pros: Quick and easy to use; doesn’t require immersion.
   • Cons: May not be as accurate for large bodies of water.

5. Glass Thermometers

   • Description: Traditional glass thermometers filled with liquid.
   • Pros: Very reliable; can last a long time.
   • Cons: Fragile; may break if dropped.

Features to Consider

1. Accuracy

   • Look for thermometers that provide accurate readings. Check user reviews and specifications to ensure reliability.

2. Temperature Range

   • Make sure the thermometer can measure the temperature range typical for your pool (usually 32°F to 120°F or 0°C to 50°C).

3. Ease of Reading

   • Choose a thermometer with a clear scale or a large digital display for easy reading.

4. Durability

   • Make sure the materials used are weather-resistant, especially for outdoor pools. Look for UV-resistant plastics or high-quality glass.

5. Installation and Use

   • Floating thermometers are typically the easiest to use. Ensure it comes with a tether or float mechanism to prevent loss.

6. Calibration

   • Some thermometers may require calibration. Ensure you understand the process if needed.

7. Additional Features

   • Consider features such as:
     • Hooks/Suction Cups: For easy attachment.
     • Remote Readings: Some digital thermometers allow readings from a distance.
     • Memory Function: Records previous temperatures.

Price Range

• Budget: Basic floating or glass thermometers can range from $10 to $20.
• Mid-Range: Digital or more advanced floating thermometers typically range from $20 to $50.
• High-End: Infrared and professional-grade thermometers can cost upwards of $50.

Where to Buy

• Local Retail Stores: Home improvement stores, pool supply shops, and department stores.
• Online Retailers: Websites like Amazon, eBay, and specialized pool supply sites often have a wider selection and customer reviews.

Maintenance Tips

• Regularly check the calibration of the thermometer.
• For digital models, replace batteries as needed to ensure accuracy.
• Clean the thermometer periodically to avoid buildup of chlorine or other pool chemicals that may affect readings.

Conclusion

Choosing the right pool thermometer enhances the enjoyment and safety of your swimming experience. Consider your specific needs, preferences, and the features that matter most to you—whether it’s ease of use, accuracy, or durability. With the right thermometer, you’ll have peace of mind knowing your pool temperature is always monitored and maintained effectively.