The 6 Best Small Pool Thermometers (2023 reviews)

If you often find yourself scrambling for good thermometer, pentair small pool thermometer should be your first option for buying. It needs to be heavier, even with 3' of string its always very close to the surface of the water. It does not sink to the length of the string without manual effort and won't stay that way but floats to the top. The unit sinks smoothly to the bottom. It has some heft to it, giving it the capability of being lowered into the water below the surface tethered to its 3' lanyard if that is necessary.

This would stay down lower to give accurate temperatures. It is good for reading water temp. It is easy to replace the string when it eventually wears out from the chlorine.

Why We Like This:

Accurate pool water and home room temperature
Worked well for checking temps in a pond on cape cod
One of the new comers and featured product

Best For fish pond monitoring: Elander Small Pool Thermometer

Buy on Amazon

The elander small pool thermometer's material feels more premium than its price would suggest. It’s a pool thermometer. It will measure the temperature of any water with sufficient depth to float. The thermometer must be able to float in water. It tells the temperature accurately. It's easy to read and floats around the pool. The included string makes it easy to attach it to something so it stays in one spot. This is a good size, easy to handle pool thermometer. It is perfect for fish pond monitoring.

Why We Like This:

Includes small rope to tie to side of pool or ladder
Floats nicely and gives accurate temperatures
Floats & shows the pool temp
Nice design and easy to attach to the holder in

Best For window: ambient wear Small Pool Thermometer

Buy on Amazon

Not everyone likes to purchase thermometer for their daily purpose, but the ambient wear small pool thermometer would be an anomoly. When it is too hot or too cold this is the best way to know the pool temp from inside the house. The unit is weather and waterproof since it does float in the pool. The direction the arrows indicate to turn are not clear and you could easily find yourself turning it the wrong way. The unit can utilize 1 of 8 channel signals. The internal temp sensor is a bonus. The display is really nice and easy to read.

The setup procedure is pretty straight forward and once the two units are paired, they have maintained a solid connection. This is enginerred to be submersed in water.

Why We Like This:

A pool thermometer designed for use in the pool
Great wireless therm for the pool
Perfect addition to any pool, love it
Greater range would result in a reduced battery life

Best For office: Inkbird Small Pool Thermometer

Buy on Amazon

The inkbird small pool thermometer should be able to handle its purpose and duties with ease. This handy pool thermometer is a great deal if you want to remotely monitor water temperature, not just for pools. It can be used in hydroponics reservoirs, pool systems, aquariums and more. The remote receiver works well also. A thin application of silicone adhesive will seal it nicely and can still be opened to change batteries is the best.

The Thermometer is accurate and displays pool temperature on display in the house. It has adopted high quality materials, and it is solid and durable. The top temperature display is the pool temperature and also the transmitter battery condition. The remote display is designed to be in an indoor environment.

Why We Like This:

Very easy, great compact size, and fun
Lot of satisfied buyers

Best For monitoring spa Temp: Amtast Small Pool Thermometer

Buy on Amazon

Best part: amtast small pool thermometer costs comparatively low and it is available to ship in 24 hours. This swimming pool thermometer is a wonderful asset for keeping track of how comfortable your pool will be when you get in. The remote sensor, which bobs around in the pool, will find its way to the skimmer eventually and disappear from sight. It works well with a small stainless wire to hold it to a connection point on the pool wall. It is perfectly, and what a convenience to be able to check the pool temp from inside.

There is a small tab with a 1/8" hole just below the blue ring. The remote display uses 2 AAA batteries and they need to be replaced every 4 to 5 months. It’s also hard to read the thermometer unless you are directly over it as the display will show ALL in sunlight. This thermostat makes it through one winter season.

Why We Like This:

Great for quick pool temp check
Uses dip-switches to set rf channel and c./f
New and hot release

Best For Outside Temperature: Milliard Small Pool Thermometer

Buy on Amazon

The milliard small pool thermometer should be able to handle its purpose and duties with ease. Measuring in at a compact 3” x 6”, there’s no need to worry about the thermometer getting in your way as you swim or bathe. It just feels solid in your hand when you get it out. It does take a hard push on the power button to turn on the unit. The screen is also a bit hard to read at times.

It is easy to read, and very accurate.

Why We Like This: