The best humidor hygrometer for most cigar owners is the SensorPush HT.w, because it is small enough to sit among the cigars, lists a typical humidity accuracy of plus or minus 2%, and sends readings to your phone without opening the lid. If you want a cheaper screen, a ThermoPro TP50 does the basics.
In short: pick the SensorPush HT.w for accuracy and phone alerts, the Govee H5075 for low-cost Bluetooth, and the ThermoPro TP50 for a simple screen.
As an Amazon Associate, Measuring Expert earns from qualifying purchases. Our picks are based on research, specifications and owner feedback, not paid placement.
Best Overall
Best Value
Best Budget
Quick Answer: Which Best Humidor Hygrometer Fits Your Box?
- Accuracy plus phone alerts: the SensorPush HT.w.
- Tightest stated accuracy: the SwitchBot Meter at plus or minus 1.8% RH.
- Low-cost Bluetooth: the Govee H5075.
- Plain screen, no app: the ThermoPro TP50.
- Clear display for a larger box: the AcuRite 00613.
- Always: check the reading against a 75% test kit when you first set it up.
On This Page
- Comparison table
- The 5 picks, reviewed
- How we chose
- Best humidor humidity range
- Specs that matter
- How to calibrate a humidor hygrometer
- Temperature converter
- Honest limits
- FAQ
- Bottom line
Best Humidor Hygrometer Comparison at a Glance
| # | Product | Best For | Standout Feature | Amazon |
|---|---|---|---|---|
| 1 | SensorPush HT.w Temperature and Humidity Sensor | Accuracy, alerts and long battery life | Typical plus or minus 2% RH, 40 mm square | View |
| 2 | SwitchBot Thermometer Hygrometer (Meter) | Longest data history and tight stated accuracy | Plus or minus 1.8% RH, 68 days on-board | View |
| 3 | Govee Bluetooth Hygrometer Thermometer H5075 | Low-cost phone monitoring | Bluetooth app, CSV export, two AAA cells | View |
| 4 | ThermoPro TP50 Digital Hygrometer | A simple screen with no phone or app | Large display, high and low records, magnet back | View |
| 5 | AcuRite 00613 Indoor Temperature and Humidity Monitor | A clear display for a larger box | High/low memory, 76 mm tall | View |
The 5 Best Humidor Hygrometer Picks, Reviewed
A humidor hygrometer measures the relative humidity (RH) inside the box so you can keep cigars in their storage range. Therefore, this list covers digital sensors with a screen, an app or both. Instead, we left out analog dials because we could not verify specifications for any dial from an established maker. In addition, our best smart thermometer guide covers wider home sensors.
Best Overall
1. SensorPush HT.w Temperature and Humidity Sensor
Best for: owners who want an accurate sensor inside the box and alerts on a phone, without opening the lid to check.
To start, the HT.w is a small Bluetooth sensor, and it measures just 40 by 40 by 16.5 mm (1.57 by 1.57 by 0.65 in) and weighs 23 g. Therefore, that size fits on a shelf of a desktop humidor or in a larger cabinet without crowding the cigars. Meanwhile, SensorPush lists humidity accuracy of plus or minus 2% typical and plus or minus 4.5% maximum between 10 and 90% RH at 25 C.
First, the sensor logs one reading every minute and stores more than a month of data until the app syncs. In addition, the app graphs the data and lets you set alert ranges, so a drop below 65% can trigger a notice. Because the readings arrive by phone, you open the lid less often, so the box stays more stable.
- Humidity: 0 to 100% RH range; plus or minus 2% typical, plus or minus 4.5% maximum from 10 to 90% RH at 25 C
- Temperature: -40 to 60 C (-40 to 140 F), plus or minus 0.2 C typical in the 0 to 60 C bands
- Bluetooth range: up to 100 m (325 ft) line of sight
- Battery: CR2477, typically over 2 years in normal conditions
- Water resistance: splash and rain proof; the page does not claim full submersion
Pros
- Typical accuracy of plus or minus 2% RH
- Small and light enough for a shelf
- Stores more than a month of readings
- Battery life of over 2 years
Cons
- No screen, so you need a phone to read it
- Prolonged exposure above 80% RH can add an offset of up to +3%, per the maker
- Costs more than a basic LCD hygrometer
Skip it if: you want to glance at a number without a phone; the ThermoPro TP50 below has a large screen.
Best Stated Accuracy
2. SwitchBot Thermometer Hygrometer (Meter)
Best for: collectors who log data for months and want the tightest accuracy number among the Bluetooth picks.
Specifically, SwitchBot lists plus or minus 1.8% RH and plus or minus 0.36 F for the Meter, using a Sensirion sensor that samples every 4 seconds. Overall, that is the best stated humidity accuracy of the five picks. However, it is larger than the SensorPush at 55 by 55 by 24 mm (2.2 by 2.2 by 0.9 in), so it suits a big humidor or a cabinet better than a small desktop box.
Next, storage is the other strength. For instance, the page lists 68 days of on-board data, 2 years in the app, and unlimited cloud storage if you add a SwitchBot Hub. As a result, you can see how a summer heat wave or a dry winter changed your box over a whole season. Finally, data exports as CSV.
- Accuracy: plus or minus 1.8% RH and plus or minus 0.36 F, per the maker
- Sensor: Sensirion, sampling every 4 seconds
- Bluetooth: data viewable from 394 ft (120 m) away
- Battery: up to 2 years
- Size and weight: 55 by 55 by 24 mm, 69 g
Pros
- Tightest stated humidity accuracy of the five
- 68 days of on-board storage
- CSV export
- Long battery life
Cons
- Larger than the SensorPush
- The page does not list a humidity range or resolution
- Cloud storage needs a separate hub
Skip it if: your humidor is very small; the 40 mm SensorPush takes less space.
Best Value Bluetooth
3. Govee Bluetooth Hygrometer Thermometer H5075
Best for: buyers who want phone readings and alerts at a low cost and can accept plus or minus 3% accuracy.
First, the H5075 is a Bluetooth-only sensor with a small screen, so it needs no hub or Wi-Fi. Govee lists plus or minus 3% RH humidity accuracy and plus or minus 0.5 F temperature accuracy, with a 2-second response. For example, for a humidor held near 70%, a plus or minus 3% band means the true value sits between about 67 and 73%.
Also, the sensor stores about 20 days of records and exports them to CSV through the Govee Home app. Meanwhile, two AAA batteries last about 6 months. However, Govee gives two range numbers, 50 m (164 ft) in open space in its FAQ and up to 60 m (196 ft) in the description, so expect less through walls and wood.
- Humidity accuracy: plus or minus 3% RH, per the maker
- Temperature accuracy: plus or minus 0.5 F
- Battery: two AAA, about 6 months
- Storage: about 20 days of records, CSV export
- Connectivity: Bluetooth only, no Wi-Fi
Pros
- Low cost for a phone-connected sensor
- Screen plus app
- Easy CSV export
- Two common AAA cells
Cons
- Plus or minus 3% accuracy is looser than the SensorPush or SwitchBot
- Only 20 days of stored data
- The page does not list a humidity range, resolution or size
Skip it if: you need the tightest accuracy; choose the SwitchBot or the SensorPush.
Best Budget Screen
4. ThermoPro TP50 Digital Hygrometer
Best for: people who want a plain screen they can read at a glance, with no app or account.
In short, the TP50 is a basic digital hygrometer with a 2.7 in display and large numbers. Specifically, the maker lists a humidity range of 10 to 99% RH, with plus or minus 2% accuracy from 30 to 80% RH and plus or minus 3% outside that band. As a result, that covers the usual humidor range of 65 to 72% well.
Also, it refreshes every 10 seconds and records the all-time high and low humidity and temperature, so you can see whether the box dipped while you were away. In addition, the back has a kickstand and a magnet. However, the page does not list the size, so measure your shelf and check the dimensions on the listing before you place it inside a small box.
- Humidity: 10 to 99% RH; plus or minus 2% from 30 to 80% RH, plus or minus 3% outside
- Temperature: -50 to 70 C (-58 to 158 F), switchable units
- Refresh: every 10 seconds
- Records: all-time high and low for temperature and humidity
- Battery: one AAA included
Pros
- Plus or minus 2% accuracy across the normal humidor band
- No app or account needed
- High and low memory
- Switches between F and C
Cons
- No logging or alerts
- The page does not list the size
- The page lists the temperature accuracy as plus or minus 1 F in one place and plus or minus 1 C in another
Skip it if: you want alerts or a history graph; use a Bluetooth sensor instead.
Best Compact Display
5. AcuRite 00613 Indoor Temperature and Humidity Monitor
Best for: shoppers who want a clear display with high and low memory for a cabinet-style humidor.
First, the AcuRite 00613 is a compact digital monitor that measures 3 by 2.5 by 1.3 in (about 76 by 64 by 33 mm). Likewise, AcuRite lists a humidity range of 16 to 98% RH, with plus or minus 3% accuracy from 20 to 80% RH, and plus or minus 4% in the 10 to 20% and 80 to 90% bands. Temperature runs 32 to 122 F (0 to 50 C), with plus or minus 2 F accuracy.
In addition, it records the daily high and low and switches between F and C. Also, a humidity icon shows high, low or ideal conditions, but that icon is not tuned for cigars, so rely on the number. The listing in the catalog may be a multi-pack, so check the pack size before you order.
- Humidity: 16 to 98% RH; plus or minus 3% from 20 to 80% RH
- Temperature: 32 to 122 F (0 to 50 C), plus or minus 2 F
- Size: 3 by 2.5 by 1.3 in
- Power: one AA alkaline battery, not included
- Mounting: keyhole hanger, magnet or kickstand
Pros
- Plus or minus 3% across 20 to 80% RH
- Daily high and low memory
- Several mounting options
Cons
- Bigger than the Bluetooth sensors
- Temperature accuracy of plus or minus 2 F is looser than the others
- No logging or alerts
Skip it if: your humidor is small or you want phone alerts; pick the SensorPush or Govee.
How We Chose the Best Humidor Hygrometer Picks
To be clear, we did not test these devices by hand. Instead, we compared manufacturer pages and kept only models with a published humidity accuracy, from established brands. Moreover, we left out unbranded listings, because their specs cannot be checked.
- Stated accuracy: a published plus or minus figure for relative humidity, and the range it applies to.
- Size: small enough to sit inside a box, or at least a cabinet.
- Reading method: a screen, an app or both, so you can avoid opening the lid.
- Logging: stored history or high and low memory, to spot drift.
- Brand mix: no more than two picks per maker, and one pick from each of five brands.
- Storage targets: for the humidity range we used the Boveda guidance of 65 to 72% RH and the Cigarworld humidor guide.
Best Humidor Humidity Range and Why Temperature Matters
First, Boveda gives an ideal cigar storage range of 65 to 72% RH. It calls its 69% pack the most preferred option for all cigar storage and its 72% pack the choice for drafty boxes or dry rooms. Similarly, Cigarworld, a European retailer, advises about 69 to 72% at 20 C, aiming at roughly 13% moisture content in the cigars.
However, relative humidity changes with temperature. In other words, warm air holds more water, so the same moisture content gives a lower RH reading. For example, the Cigarworld article lists the values below for the same cigar moisture.
| Room temperature | RH for the same cigar moisture |
|---|---|
| 16 C (61 F) | About 95% |
| 18 C (64 F) | About 84% |
| 20 C (68 F) | About 69 to 72% |
| 22 C (72 F) | About 66% |
| 24 C (75 F) | About 59% |
As a result, a hygrometer that also reports temperature is useful, and all five picks here do (see our best analog thermometer guide for a dial alternative). Consequently, the table also shows why a plus or minus 3% accuracy band matters: at 70% RH, the true value could sit anywhere from 67 to 73%, which is nearly the whole recommended range.
Specs That Matter When You Choose the Best Humidor Hygrometer
In short, four numbers decide most of the value. First, check the stated accuracy and the range it covers, because many makers list a tighter figure in the middle of the scale than at the ends. The table compares the five picks.
| Model | Stated humidity accuracy | Where it applies | Reading method |
|---|---|---|---|
| SwitchBot Meter | Plus or minus 1.8% RH | Range not stated | App and on-device data |
| SensorPush HT.w | Plus or minus 2% typical, 4.5% max | 10 to 90% RH at 25 C | App only |
| ThermoPro TP50 | Plus or minus 2% | 30 to 80% RH | Screen |
| Govee H5075 | Plus or minus 3% | Range not stated | Screen and app |
| AcuRite 00613 | Plus or minus 3% | 20 to 80% RH | Screen |
Second, look at size, because the sensor must fit where the air moves. Third, check how the device reports. A phone app lets you read the humidity with the lid closed, so the box stays stable. Finally, consider logging. For example, a history shows slow drift that a single glance can miss. For general humidity concepts, our best weather station guide explains how home sensors report relative humidity and temperature.
How to Calibrate a Humidor Hygrometer With a 75% Test
In practice, a one-step check shows how far your hygrometer is from a known humidity. Boveda sells a 75% RH calibration kit, and Vaisala explains that sodium chloride salt gives 75% RH in a saturated salt test.
- Check the fit. Make sure your hygrometer fits in the 5.5 by 7 in (14 by 18 cm) bag.
- Seal it in. Put the hygrometer inside the bag with the packet, then close the zipper fully.
- Wait 24 hours. Leave the bag at room temperature, between 65 and 75 F (18 to 24 C).
- Read the display. A reading of 75% means the device is on target.
- Note the offset. If it reads 72%, for example, record that it reads 3 points low.
- Adjust or remember. Either set the device to 75% if it allows, or apply your recorded offset when you read it.
Boveda advises recalibrating each hygrometer every six months. Also, reseal the bag with the packet to reuse it within three months of opening. Additionally, Vaisala reports that its own salt method gives roughly plus or minus 1.3 to 2% RH, so even a careful home test has some uncertainty.
Humidor Temperature Converter
Most hygrometers here show Fahrenheit or Celsius. For example, enter 70 F to see that it equals 21.1 C, which sits near the 20 C figure used for the humidity range above.
Honest Limits of Humidor Hygrometers
In fact, every hygrometer drifts, and a cheap one drifts more. Therefore, we treat the numbers on this page as manufacturer claims, not as test results. For instance, a device that lists plus or minus 2% under lab conditions may read differently near the edge of its range, inside a sealed wooden box or after a long time at high humidity. The SensorPush page, for example, warns that prolonged exposure above 80% RH can add an offset of up to +3% that fades afterward. Therefore, check your device against a 75% test, then compare readings across two devices when a number looks odd.
Best Humidor Hygrometer FAQ
What is the best humidor hygrometer?
For most owners, the SensorPush HT.w is the best humidor hygrometer. It lists a typical accuracy of plus or minus 2% RH, it is small, and it sends readings to a phone. Alternatively, for a plain screen, the ThermoPro TP50 is the simpler choice.
What humidity should a humidor be?
In short, Boveda gives an ideal range of 65 to 72% RH, and it calls 69% the most preferred setting. Cigarworld also advises about 69 to 72% at 20 C. Then choose one target in that range and hold it steadily.
Are digital or analog hygrometers better?
Generally, digital models publish an accuracy figure, which makes them easier to judge. We could not verify specifications for analog dials from established makers, so this guide covers digital sensors only. In either case, test the device before you trust it.
How accurate is a humidor hygrometer?
It depends on the model. For example, the picks here list plus or minus 1.8% to plus or minus 3% RH, and some of those figures apply only to part of the scale. Therefore, a 75% test is a good idea.
How do I calibrate a humidor hygrometer?
First, seal the device with a 75% RH test packet for at least 24 hours at 65 to 75 F, as Boveda describes. Then compare the reading to 75% and either adjust the device or note the offset.
How often should I recalibrate?
Boveda advises recalibrating each hygrometer every six months. In addition, check again if the reading looks wrong or if the device sat at very high humidity for a long time.
Can I use a Bluetooth sensor inside a humidor?
Yes, if it fits, because both sensors are small. The SensorPush HT.w measures 40 by 40 by 16.5 mm, and the SwitchBot Meter measures 55 by 55 by 24 mm. Because wood and metal weaken a Bluetooth signal, expect less range than the listed numbers.
Does temperature change the humidity reading?
Yes. Because warm air holds more water, the same cigar moisture shows a lower RH. Cigarworld lists about 66% at 22 C and 84% at 18 C for the moisture that sits at 69 to 72% at 20 C.
Do humidity packs replace a hygrometer?
No. Instead, Boveda says its packs reduce the need to monitor constantly, but a hygrometer still shows whether the box is on target. Therefore, use both, and check the hygrometer first when something seems off.
Where should I put the hygrometer in the humidor?
First, place it near the cigars, away from the humidifier and the lid seal, so it reads the air the cigars sit in. Also, keep the sensor out of direct contact with wet packs or sponges.
Bottom Line on the Best Humidor Hygrometer
For most owners, the best humidor hygrometer is the SensorPush HT.w. It is small, it lists a typical accuracy of plus or minus 2% RH, and it also reports to your phone. Instead, choose the SwitchBot Meter for the tightest stated accuracy, the Govee H5075 for low-cost Bluetooth, or the ThermoPro TP50 for a plain screen. Whichever you pick, test it against 75% first.