You walk out to the pool in May, dip a toe in and decide it's fine, and then spend ten minutes shivering. A pool thermometer takes the guessing out of it. Most are a floating tube shaped like a duck or a turtle, and some now send the number to your phone. Here are the best pool thermometer options in 2026, from a simple floater to a smart one with an app. We didn't personally test them. We went through the listings and the reviews. The big floaters are cheap, so the real choice is between a floating tube, a smart sensor and an infrared gun. See also our indoor outdoor thermometer picks.
What to Look For in a Pool Thermometer
Type. A floating tube is the classic. A smart (Wi-Fi) thermometer sends readings to your phone. An infrared gun reads surface temperature from a distance.
Easy to read. Large numbers matter if you don't want to squint. Look for both Fahrenheit and Celsius.
String. A tether keeps it from floating to the filter. Make sure the string is long enough to reach the edge.
Shatter resistance. Glass thermometers break. Plastic ones are safer around kids.
Range. The floaters here read from about 20 to 120 degrees F, which covers pools and hot tubs. For a smart model, check the wireless range and that your Wi-Fi works with it.
The 5 Best Pool Thermometers in 2026
1. Etekcity Infrared Thermometer Laser Temperature Gun, -58F to 1130F
Best for: people who want one tool for the pool, the oven, the AC and more.
A handheld gun you point at a surface and pull the trigger.
What makes it stand out: It has by far the best score here, 4.6 stars from more than 37,000 reviews. It reads from -58 to 1130 degrees F with a backlit screen and no contact.
Good to know: An infrared gun reads the surface only, not deeper water. It's for a quick check, not a replacement for a floating thermometer. It's also not for use on people.
2. XY-WQ Puffer Floating Pool Thermometer with String
Best for: kids' pools and anyone who likes a fun floater.
A blue puffer on top of a thermometer tube.
What makes it stand out: A pufferfish-shaped floater with a string, easy-to-read numbers and a range of 20 to 120 degrees F. It has 4.3 stars from nearly 2,500 reviews.
Good to know: It's a basic liquid thermometer, so it isn't precise to the degree. Take it out of the water in winter.
3. Floating Pool Thermometer, Large Display with String (Turtle)
Best for: large readable numbers.
A green turtle on top of a floating tube.
What makes it stand out: It's shatter-resistant, has a large display with a string and works for pools, spas, hot tubs and aquariums. It has 4.4 stars from nearly 1,900 reviews.
Good to know: It's a floater, so wind and swimmers can push it around. Tie it to the ladder.
4. XY-WQ Floating Pool Thermometer, Large Size (Duck)
Best for: families who like the rubber duck look.
A yellow duck in a blue hat sitting on a thermometer tube.
What makes it stand out: A duck-shaped floater with a string and large numbers. The listing says it reads 20 to 120 degrees F. It has 3.9 stars from more than 2,100 reviews.
Good to know: It has the lowest rating of the floaters, so pick the Turtle or Puffer if you want the safer bet.
5. GoveeLife Smart Wireless Pool Thermometer P2, with App
Best for: people who want to check the pool temperature from their phone.
A white and blue floating sensor with a screen and a gateway hub.
What makes it stand out: The listing shows an IP68 waterproof floating sensor with a gateway, a 1082-foot range in open air, and app, email and buzzer alerts. It has 4.3 stars from 329 reviews.
Good to know: It has a gateway that has to plug in and connect to Wi-Fi. It costs more than the plain floaters, and it has fewer reviews.
How to Use a Pool Thermometer
- Drop the floater in and tie the string to the ladder or the edge.
- Wait a couple of minutes for the reading to settle.
- Check it away from the skimmer or jets, which can change the reading.
- Check it in the morning and in the afternoon. Pools warm up fast in the sun.
- Take it out in winter and store it in a dry place.
Frequently Asked Questions
What is the best pool thermometer?
What is a good pool thermometer with an app?
Do floating pool thermometers work well?
Can I use an infrared thermometer for a pool?
Keep Reading
Final Thoughts
For a plain floater, we'd buy the Turtle or the Puffer. Both have good reviews and a string. If you want the number on your phone, get the GoveeLife P2.
The Etekcity infrared gun has the best score, but it's a general tool, so buy it for the other jobs too. The Duck is cute, but it has the lowest rating of the floaters.
Disclosure: This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases. Here's how we pick products.
