Smart WiFi Pool Thermometer Options

If you have a swimming pool, maintaining it could be a big job. In fact, one of the things you will have ensure is if your pool has the right temperature. Though this might seem that it is something that you could ignore, it is the contrary as it is very important especially in maintaining your pool’s chemical balance. Most pool owners do this through the use of a conventional pool thermometer which you would see and find floating in the pool.

Nowadays, with the advancement of technology, most homes are starting to transform into smart homes and this of course would include pools. What is amazing about having a smart pool thermometer is that its pool sensor could be connected to your voice assistant or smart home platform. If you wish to have the same for your home, keep in mind that you will need to have WiFi pool thermometer.

Having temperature sensors are necessary and essential in a smart home and if you are planning to update your home with temperature sensors, do not worry as there are numerous offered in the market. Though this is the case, choosing one could be confusing. Hence, in this article, we shall provide you a list of the best smart WiFi pool thermometer options.

Best Smart WiFi Pool Thermometer Options

Sonoff TH16 Smart Switch


  • Supports Alexa, Google Home, IFTTT
  • Water Temp
  • WiFi
  • Low cost
  • Needs hard wiring for power

Sonoff TH16 is an amazing WiFi pool thermometer option. It requires to be paired with DS18B20 water temperature probe which would have a minimal upfront cost. Its smart switch is rated up to 15 Amps including temperature probe for automated control.

The Sonoff TH16 is easy to install. You have the option to use the terminals or if you wish to use Sonoff TH16 as a WiFi pool thermometer, you also have the option not to use it. Though that is the case, you will still be able to use this device as a temperature trigger switch to control the heat of your pool and pool cover motor.

This water temperature probe is very convenient as you could put it in the deeper part of your pool which means, it could provide you the temperature of the deeper part of your pool rather than just the surface.

The only downside of this device is that it is not water proof which means you would need to enclose it in a waterproof casing. Do not worry as this is not a huge problem as it is easy to find one. There are a lot of affordable and rated IP68 waterproof.


Ondilo Ico


  • Supports home assistant
  • Water temp, ORP, pH, conductivity
  • WiFi and Bluetooth
  • Rechargeable long life battery
  • Trend alerts
  • Pool and Spa and hot tub versions

The Ondico Ico is a floating pool sensor which is popularly and commonly used in European countries. Aside from pool version, they also offer spa and hot tub versions. As for its pool sensor, it has the ability to work as a chemical sensor as well. In fact, it could monitor your pH, chlorine through ORP measurement and salt level. Before your pool has a chemical imbalance, it would alert you right away.

This device comes with an internal rechargeable battery which could be charged through a USB port under its UV resistant top cover.

WaterGuru Sense


  • WiFi
  • App based graphs and alerts
  • Water temp, pH, chlorine, flow rate
  • Skimmer adapters available

The WaterGuru sense is available in the US. It is considered as an automated swimming pool monitoring system which has the ability to monitor pH, chlorine levels, water temperature and pump flow rate. All the important details would be sent to your smart phone with graphs. All you have to do is to send a request and you will get the data the you need.

This device hangs from its lid and its cartridges are replaceable. It is suitable for both chlorinated and salt water pools. Keep in mind, however, that they are not for hot tubs. This device also runs on a C cell battery which would last you for about 6 months before you would need to replace it.

Blue Connect Plus


  • Supports Alexa, Google Assistant, IFTTT
  • Temp, pH, ORP and conductivity
  • Floating or integrated pipeline stalled
  • WiFi would need optional Extender

If you have extra to spend, the Blue Connect Plus is a perfect option. It comes with a comprehensive floating pool sensor package. It has the ability to integrate with smart assistants such as Amazon Alexa, Google Assistant and IFTTT. It comes a pipe which allows you for it to be installed with your filtration system. Though there are more affordable models, this one covers everything that you need. It uses Bluetooth which means, if your pool is too far, you might need to get a Blue Extender.

What About Homekit?

Unfortunately, none from our list have the ability to support HomeKit. However, if you would want something that talks to Siri, we suggest that you check Netatmo Conversion.


  • Supports Alexa, Google Assistant, HomeKit, IFTT
  • WiFi via parent weather station
  • Water temperature
  • Drop in probe for skimmer

This one has the ability to monitor air temperature. It comes with custom wiring which would need to be in a weather proof box which would hold the battery pack for easy access. It supports major smart home platforms via weather station unit. Keep in mind, however, that you would need to purchase a weather station unit separately.

DIY Homekit Pool Thermometer

Since there are no commercial offerings which support HomeKit aside from Netatmo Conversion, do not worry as there are several options.

Fibaro Z-Wave door sensors could be used. All you would need to do is to integrate it with your Homekit. The only downside with this one is that it could be a bit more expensive. Another option is the Hue Motion Sensor which comes with an air temperature sensor. It is more affordable and it runs on batteries which could last for 2 years. For this to work, you would need a Zullkit project box and a Hue motion sensor.


Is there a pool thermometer that connects to Alexa?

There are several smart pool thermometers that could connect to Alexa.

Are pool thermometers accurate?

They are generally accurate. However, there are some models that would need some calibration.

How long do you keep a thermometer in the pool?

Wireless pool thermometers could be left in the pool all throughout the season.

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