In this guide we’ll look at the best greenhouse thermometers for the UK market.
We’ve compared accuracy, design, build quality and cost
to give you our top recommendations.

What Are The Best Greenhouse Thermometers?

  • Features
  • Lovely design
  • Precision instrument
  • Weather-resistant
  • Cost
Rating
9.8/10
  • Features
  • Measures temperature and humidity
  • Clear backlit screen
  • 2-year warranty
  • Cost
Rating
9.7/10
  • Features
  • Measures temperature and humidity
  • Clear backlit screen
  • Takes 1 AAA battery which is included
  • Cost
Rating
9.3/10
  • Features
  • Water-resistant
  • Suitable for indoors and outdoors
  • Displays current and min/max temperatures
  • Cost
Rating
9.0/10
  • Features
  • Suitable for indoor and outdoor use
  • Displays current and min/max temperatures
  • Looks cute
  • Cost
Rating
8.6/10

More Detailed Greenhouse Thermometers Reviews

OutdoorHome Digital MIN/MAX Thermometer

The OutdoorHome Digital MIN/MAX Thermometer is the best greenhouse thermometer because it has a clear display, an attractive design and records minimum and maximum temperatures.

This is a cute little thermometer that will add a nice feature to your garden or greenhouse with its house design. The little roof is a lovely feature and also shelters the thermometer from the elements.

Though this is a cute thermometer it is still a good technical instrument. It is lightweight, high precision and very sensitive. It is made from weather-resistant materials and has a nice clear screen with an easy to read display. The thermometer displays the current temperature as well as the highest and lowest temperatures. The hi/lo function is easy to reset at the touch of a button. The thermometer can withstand temperatures of -58 F – 158 F /-50 C – 70 C/. The thermometer is also really good value for money for such an attractive and precise instrument.

This is the best greenhouse thermometer because it looks good, is weather-resistant and has a clear, easy to read screen.

ThermoPro TP55 Digital Indoor Hygrometer Thermometer

The ThermoPro TP55 Digital Indoor Hygrometer Thermometer is an excellent product as it measures temperature and humidity and comes with a 2-year warranty.

This thermometer has a backlit screen and a clear display which shows the temperature and humidity. The thermometer also displays the maximum and minimum temperatures recorded. The product has a fold-out stand and a magnetic backing making it easy to mount. It requires 2 AAA batteries which are included. The thermometer is well made from quality materials and is simple and intuitive to use. It measures temperature in increments of one decimal place and is accurate to ±1°C.

This is a handy thermometer that clearly displays minimum and maximum temperatures and humidity as well as the current temperature and humidity.

ThermoPro TP50 Digital Indoor Room Thermometer Hygrometer

The ThermoPro TP50 Digital Indoor Room Thermometer Hygrometer is a tiny yet accurate thermometer that also measure humidity.

This great little thermometer fits in the palm of your hand and can be mounted on any metal surface because of its magnetic backing. It also has a fold out stand. The thermometer gives readings up to one decimal place for greater accuracy. The humidity reading is clear and easy to understand with a smiley face when the humidity is at the perfect comfort level. It will show as dry if humidity is below 30% and wet if humidity is above 60% and also shows the actual percentage on a clear backlit screen. The thermometer also features maximum and minimum displays for both temperature and humidity. The product is accurate to ±1°C and takes 1 AAA battery which is included.

Overall, this item has lots of great features for the money and is compact and easy to use.

Digital Max-Min Greenhouse Thermometer

This Digital Max-Min Greenhouse Thermometer displays the temperature and maximum and minimum temperatures on a clear display and is suitable for indoor and outdoor use.

The thermometer measure temperature over the range of -10 to 50 °C with a 0.1 °C resolution. The units are housed in a green ABS polymer case to which has a waterproof rating of IP65 to protect against the elements. The unit features a keyhole slot for hanging. The thermometer is easy to use, having one button to reset the maximum/minimum reading and another to change from Centigrade to Fahrenheit. The unit requires 1 AA battery which is included and is accurate to ±1°C.

This is a great thermometer that is suitable for indoor and outdoor use due to its water-resistant rating.

Thermometer World Digital Max-Min Greenhouse Thermometer

This Digital Max-Min Greenhouse Thermometer shows the current and min/max temperatures on a clear screen and offers great value for money.

This digital thermometer looks nice in the greenhouse and the little roof looks cute and protects the thermometer from drips. The roof also features a hanging hole which makes it easy to display. The thermometer is suitable for indoor and outdoor use and is accurate and easy to read. It displays the current temperature and the minimum and maximum temperatures on a clear screen. The minimum and maximum temperatures are easy to reset at the touch of a button. It can also be switched from Celsius to Fahrenheit at the touch of a button and is accurate to ±1°C.

Overall, this is a great value thermometer that looks nice and is suitable for outdoor use.

Greenhouse Thermometers Buyer’s Guide

Display

The best greenhouse thermometers have a clear easy to read display so you can see the temperature at a glance. Many digital thermometers have a backlit display which makes the thermometer easy to read in low light, too.

Readings

The best greenhouse thermometer will show the current temperature as well as the minimum and maximum temperatures recorded. This is extremely handy in the greenhouse as you can easily see what the highest and lowest temperature were throughout the day and night. This function is easily reset at the touch of a button. Many digital thermometers will also measure humidity and display this clearly on the screen. Again, many will also show the minimum and maximum humidity which are useful figures for the gardener to know.

Accuracy

Most digital thermometers are accurate to +- 1 degree which is usually precise enough for most gardening needs.

Weatherproof

Your digital greenhouse thermometer will last longer if it is weatherproof even if used in a greenhouse. Greenhouses are often damp and humid, and your thermometer may be subjected to condensation, drips and spray.

Warranty

Many thermometers come with a warranty for added peace of mind.

FAQ

Where is the best place to position a thermometer in a greenhouse?       

You should avoid placing your thermometer in direct sun as this will give readings that do not reflect the overall temperature. You can shade the top of the thermometer with foil to help prevent this. In general, it’s best to place the thermometer about mid-height and away from doors, windows and heat sources. Remember that the temperature will be a little higher above the thermometer and a little lower below it.

Of course, if you have specific plants you want to protect, then place the thermometer near these to check the temperature in that specific area.

A greenhouse thermometer is an essential tool for the gardening enthusiast as it allows you to create the perfect conditions for your plants. Tender plants can easily wilt in too much heat and die if they are damaged by frost. A greenhouse thermometer will help you regulate the temperature in your greenhouse and provide your plants with the perfect growing environment.

I recommend the OutdoorHome Digital MIN/MAX Thermometer as it is accurate, attractive and weather-resistant and displays the current and minimum and maximum temperatures on a clear display.