Whatever the size of your collection, no humidor is complete with a reliable hygrometer. However, there’s a lot of hearsay surrounding this something enigmatic devices that it can be somewhat confusing as to what to buy and how to use it best.

In this particular guide, you will discover the ultimate selection of the Best Cigar Hygrometers that you can buy online:

  1. Boveda Butler [Value For Money Sensor]
  2. Cigsor [Wi-Fi Enabled]
  3. Sensor Push [Wi-Fi Optional]
  4. Quality Importers Hygroset II [Best Digital Hygrometer]
  5. Oasis Caliber IV [Easy Calibration]
  6. Lerway Inkbird ITH-10 [Most Affordable]
  7. Oasis Caliber 4R [Analogue Aesthetic]
  8. Xikar Purotemp [Branded Hygrometer]

You can use the links above to jump ahead. You can also head to the menu below to see what else is covered as well as our other guides.

What Are The Best Hygrometers You Can Buy Online?

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1. Boveda Butler [Best Value For Money]

  • Country Of Origin: USA
  • Type: Bluetooth Smart Sensor
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 2%
  • Can Be Calibrated: Yes
  • Dimensions: 2″ x 11/4″ x 1/2″
  • Price: $20 [Buy Now On Amazon]
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With its competitive price point that rivals even basic digital hygrometers, the Boveda Butler is a cigar enthusiast’s dream come true. Although there was an admittedly shaky start, the software issues have been ironed out and the Butler is now an effective and reliable tool.

Thanks to an in-built wizard, the Butler can be easily calibrated through the app, which is generally well designed. Not only can you track your humidor’s humidity and temperature history but you can use it to directly order more packs.

As a bluetooth device, its range is limited. However, Boveda show you how it’s possible to set up remote monitoring by using an old smartphone.

"Despite a few initial quirks, the Boveda Butler has grown to be an invaluable tool for monitoring our cigar collection."
Bespoke Unit Rating: ★★★★★

2. Cigsor [Wi-Fi Enabled]

Cigsor Smart Sensor Hygrometer
  • Country Of Origin: Switzerland
  • Type: Wi-Fi Smart Sensor
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 2%
  • Can Be Calibrated: Yes
  • Dimensions: 7″ x 1″
  • Price: $200 [Buy From Cigsor]
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Admittedly, the Cigsor is a particularly premium device. Nevertheless, it’s an elegant and refined choice for serious collectors. Unlike the Boveda Butler, it’s Wi-Fi enabled, which means that you can use it for remote monitoring right out of the box.

Similarly, the Cigsor is one of the largest and heaviest hygrometers that we’ve seen. It’s essentially inserted into the humidor like an extra cigar and sits with your collection.

While the device is impressive, the app can be a little rough around the edges. However, it has extra features such as ventilation control as well as the ability to find nearby lounges according to your location.

3. Sensor Push [Wi-Fi Optional]

Sensor Push & WiFi Gateway
  • Country Of Origin: China
  • Type: Bluetooth & Wi-Fi Smart Sensor
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 3%
  • Can Be Calibrated: Yes
  • Dimensions: 1.57″ x 1.57″ x 0.65″
  • Price: $50 + $100 For Gateway [Buy Now On Amazon]
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Sensor Push is an excellent alternative to the two above options. Although it wasn’t designed specifically for cigars, it excels inside your humidor.

By default, the Sensor Push is a bluetooth device that can be connected to your phone. However, you can purchase a Wi-Fi gateway, which can be connected to a router in order to provide you with remote monitoring.

We confess that the Sensor Push has a 3% variance compared to the 2% claimed by both Cigsor and Boveda. Nevertheless, it can be calibrated to decrease this as much as possible.

4. Quality Importers Hygroset II [Best Digital Hygrometer]

Quality Importers Hygroset II Hygrometer
  • Country Of Origin: China
  • Type: Digital Hygrometer
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 2%
  • Can Be Calibrated: Yes
  • Dimensions: 1.75″ Diameter
  • Price:
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The Hygroset II is something of a classic and still remains one of our favourite digital hygrometers on the market today. Its round shape is particularly convenient and it can be placed like a traditional analogue hygrometer at the centre of a humidor’s interior.

Furthermore, it’s very reliable with a long battery life and it can also be easily calibrated when necessary. Nevertheless, it provides pretty good accuracy even out of the box.

5. Oasis Caliber IV [Easy Calibration]

Oasis Caliber IV Digital Hygrometer
  • Country Of Origin: China
  • Type: Digital Hygrometer
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 1%
  • Can Be Calibrated: Yes
  • Dimensions: 3.9″ x 0.4″ x 1.2″
  • Price:
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Oasis is renowned for its quality cigar storage products such as its large-scale and almost industrial humidification systems. As such, the Caliber hygrometer series is quite well-known.

The fourth edition to the series is designed to be very easy to calibrate. Furthermore, it boasts the greatest accuracy in this list so far with only a 1% variance.

6. Lerway Inkbird ITH-10 [Most Affordable]

Inkird ITH-10 Digital Hygrometer
  • Country Of Origin: China
  • Type: Digital Hygrometer
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 3%
  • Can Be Calibrated: No
  • Dimensions: 3.94″ x 1.26″ x 0.39″
  • Price: $13 [Buy Now On Amazon]
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Another well-known hygrometer, the Inkbird is one of the cheapest options that you can buy. While we do prefer aesthetics of the Hygroset II, the Inkbird is easier to use with extra buttons for functionality.

If you’re only just starting a cigar collection and want to keep things cheap, it’s a great entry-level option. However, bear in mind that it can’t be calibrated so you can’t expect the same level of accuracy as the other options listed here.

7. Oasis Caliber 4R [Analogue Aesthetic]

Oasis Caliber 4R Digital Hygrometer
  • Country Of Origin: China
  • Type: Digital Hygrometer
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 1%
  • Can Be Calibrated: Yes
  • Dimensions: 2.25″ x 0.7″
  • Price:
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A round version of the Caliber IV, the 4R is made for cigar enthusiasts who miss the aesthetic of analogue hygrometers but want an accurate product. Its screen features a dial with a LCD needle that indicates the RH. Meanwhile, a small thermometer displays the temperature below.

Its just as easy to calibrate as its rectangular counterpart, which is fortunate as there have been reports of it being quite inaccurate out of the box. Therefore, we recommend calibrating it immediately to benefit from its 1% variance.

8. Xikar Purotemp [Branded Hygrometer]

Xikar PuroTemp Digital Hygrometer
  • Country Of Origin: China
  • Type: Digital Hygrometer
  • Units: Imperial & Metric
  • Includes Thermometer: Yes
  • Accuracy: 2%
  • Can Be Calibrated: No
  • Dimensions: 1.75″ Diameter
  • Price: $21 [Buy Now On Amazon]
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If you’re fond of branded products, this might be the hygrometer for you. A simple digital hygrometer with a clean display, Xikar claim that it requires no calibration at all.

Indeed, the hygrometer offers a variance of only 1% and we have yet to hear of it being inaccurate. Although we prefer to be able to calibrate our devices ourselves, we can see the appeal of this no-fuss hygrometer.

Why Do You Need A Hygrometer?

Various Digital Hygrometers & Smart SensorsA hygrometer is an essential albeit sometimes overlooked component to any self-respecting humidor. Even with the best quality humidor, an accurate and calibrated hygrometer is fundamental.

Cigars are natural products and they’re very sensitive to both humidity and temperature. Consequently, they need to be stored in a controlled environment to prevent them becoming dry or mouldy from too much moisture.

If you don’t have a device that allows you to monitor these levels, you’re essentially flying blind and won’t be able to properly care for your cigars.

As mentioned above, you may have an impeccable humidor with an air-tight seal. However, you may not be able to account for all the factors such as the humidification system’s levels and changes in the external environment.

For instance, you may introduce new cigars into your humidor that are too dry and haven’t been acclimated to your preferred humidity level. As a result, you won’t be able to realise that it has caused the overall relative humidity (RH) to drop.

Similarly, wooden humidors require periodical seasoning as the wood can begin to dry. Yet you’ll need a hygrometer to realise that this is happening and act accordingly before the cigars are damaged.

Whatever the scenario, a reliable hygrometer is of the utmost importance when storing cigars.

How To Use A Hygrometer

Sensor Push Smart SensorUsing a hygrometer is relatively simple in its own right. That said, its readings may indicate that you will have tasks to perform to ensure that the cigars’ biosphere remains stable.

In short, you simply need to periodically check the hygrometer’s readings. Although we do this daily, you can as little as once a week. Nevertheless, it’s important to take a mental note of the hygrometer’s figures.

As we will no doubt cover in a future guide in greater detail, the humidity should be within a window of 65% to 71%. There can be some minor fluctuations over time but they mustn’t be too sudden either.

You can already learn about the different levels in this window thanks to our Boveda guide. Since Boveda offer a variety of packs with different relative humidity levels, we break down their various benefits and why you should consider them.

For example, humidity levels nearer the 65% range tend to be better for Cuban cigars whereas 69% is more suited to so-called “New World” blends.

Ideally, the hygrometer’s readings should be consistent, which indicates a stable environment. However, if the humidity is increasing or decreasing beyond an acceptable limit, you may need to step in and take action.

If the humidity is too low, the humidification system may need recharging or your humidor could even need seasoning as described above. Meanwhile, a humidity level that’s too high could indicate an overzealous humidity system, which can sometimes be alleviated by something as simple as airing the humidor.

Finally, you can also use a digital hygrometer to track the temperature. In most cases, you want cigars to remain under 20°C (68°F) but there are arguments for specific temperatures.

Why Are There No Analogue Hygrometers?

Amancy Leather Travel HumidorAs you may have noticed in the entries above, we didn’t include any analogue hygrometers. In case you aren’t familiar with them, analogue hygrometers are relatively rudimentary devices that dictate humidity with a traditional hand on a dial.

However, it’s likely that you already know what is an analogue hygrometer given that they’re often supplied with most humidors.

While we do appreciate their aesthetics, analogue hygrometers are unfortunately not very reliable. Most analogue hygrometers will feature a metal spring that tightens or loosens when exposed to different levels of humidity. This is never overly precise as the spring may move differently depending on the environment.

Over a short period of time, the spring will lose its limited accuracy, which means that it will need calibrating. Sadly, there’s no precise way of knowing when that is other than if you manage to observe abnormal changes in your readings.

Still, there are some exceptions. For instance, higher-quality analogue hygrometers will use a synthetic or human hair instead of a metal spring. Occasionally, this can even be more accurate than digital hygrometers. Nevertheless, it still needs to be properly maintained with frequent calibration.

Finally, analogue hygrometers won’t be able to inform you of the temperature, which is another of the many benefits of digital ones.

What Are Smart Sensors?

Sensor Push & WiFi Gateway WideNowadays even digital hygrometers aren’t enough for the digital age. After all, we live in a connected world where you can essentially control an entire household from the palm of your hand. Therefore, it comes as no surprise that smart hygrometers – or smart sensors – are continuing to grow in popularity.

Yet, are these devices just a gimmick for glorified digital hygrometers or is there something more to it?

We’re actually very fond of smart sensors and the convenience that come with them. As hinted above, these smart sensors provide you with the opportunity to check on your cigar collection from the comfort of your phone.

This can be particularly handy if you have several humidors or storage solutions as they will all be assembled in a single app. Additionally, you won’t even have to open the containers and can check them all at the same time.

If you want to learn more about smart sensors and the best ones that you can buy, head to our dedicated smart sensor guide.

Do You Need To Calibrate A Hygrometer?

Calibrating Boveda Butler Hygrometer With KitAs mentioned a few times above, hygrometers need to be properly calibrated to ensure that they provide you with accurate readings. This is essential as some hygrometers can be completely off by as much as 10% RH when taken out of their box.

As you can imagine, this can be disastrous as you might be completely unaware that the levels in your humidor are dangerously too low or high. This might result in dry cigars, a break-out of mould, or even tobacco beetles!

If you’re a cautious collector and use multiple hygrometers, you may have noticed some discrepancies. As a result, you may try to estimate the actual relative humidity. However, this is essentially guesswork and comes with its own risks.

Fortunately, calibrating a hygrometer is usually quite easy and takes rarely more than 24 hours to complete.

Occasionally, some brands will proudly announce that their hygrometers come pre-calibrated. However, as much as we trust them, we don’t just want to take their word for it. Therefore, we ensure that we calibrate our hygrometers before they’re used.

After all, calibrating a hygrometer is easy enough that it’s not worth the gamble! Learn how to properly do it with our full guide on how to calibrate a hygrometer!

What Next?

Now that you’ve seen the best hygrometers and have learned about using one, why don’t you also check out our related guides below:

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