10 Best Wifi Pool Thermometers 2025 in the United States

The GoveeLife Smart Pool Thermometer is designed to help you keep a close eye on your pool or hot tub temperature from anywhere using its WiFi connection. It measures water temperatures between -4°F and 158°F with a good accuracy of about ±0.9°F, which is precise enough for most pool or spa needs. Thanks to the included WiFi gateway, you can monitor up to 10 sensors within about 328 feet, but note that obstacles can weaken the signal, so the gateway placement matters.

The device is waterproof with an IPX7 rating, meaning it can be safely submerged and won’t be damaged by water. It’s powered by two AAA batteries that can last from one to three years depending on usage settings, and you’ll get app and on-screen alerts when the battery runs low, which adds convenience. The app also allows you to view temperature data over 20 days and export records up to two years, great for tracking trends.

Installation is straightforward, with a tether and replaceable orange loop to keep the thermometer from floating away and easily visible. On the downside, it only works with 2.4GHz WiFi, so it won’t connect to 5GHz networks, and the signal might struggle through walls. While the plastic build is durable for water use, it may not withstand rough handling. This thermometer suits pool or hot tub owners wanting reliable, remote temperature monitoring with easy setup and decent battery life.

The GoveeLife Smart Pool Thermometer offers a comprehensive solution for monitoring pool temperatures with several standout features. With a temperature range of -40°F to 158°F (-20°C to 70°C) and an accuracy of ±0.5°C, it provides precise and reliable readings. The device refreshes every 2 seconds, ensuring up-to-date information. Its IPX7 waterproof rating ensures durability under water, and it can handle harsh weather conditions, making it suitable for various environments like swimming pools, hot tubs, and fish ponds. The connectivity range is impressive at up to 328 feet (100 meters), but it’s important to note that obstacles can reduce signal effectiveness.

The thermometer pairs with an app that supports real-time monitoring and notifications, enhancing its usability. The app also allows for data storage and export over two years, providing valuable historical data for users. The device operates on two AAA batteries, offering a battery life of up to one year in standard mode and three years in power-saving mode. Low battery notifications on both the device and the app ensure you’re never caught off guard. Installation is simple, aided by an included rope to prevent the thermometer from drifting.

However, the device only supports 2.4GHz Wi-Fi, which is a limitation to consider. The GoveeLife Smart Pool Thermometer is a robust and feature-rich option for anyone needing reliable and accurate temperature monitoring.

The BaldrTherm Wireless Pool Thermometer is designed for pool, spa, hot tub, or aquarium owners who want accurate and convenient temperature monitoring. Its 360° LCD display makes it easy to read from any angle while you're in or near the water. The thermometer offers high accuracy of ±0.5°F, which is excellent for keeping water conditions just right. One standout feature is its remote monitoring capability via an app, allowing you to check temperature from up to 328 feet away, which adds convenience and peace of mind.

Its IPX7 waterproof rating means it can handle being submerged without issues, and the fog-free screen stays clear even in steamy or humid environments. The transparent top adds a nice touch for easy viewing and aesthetics. Installation appears straightforward, mostly involving placing the floating sensor in the water and connecting to the gateway device.

This thermometer suits anyone looking for reliable, accurate temperature readings with the bonus of remote access, though the use of nonstandard batteries might be a consideration when making your decision.