DIGITAL HYGROMETERS (GOVEE)

[Yigal]

So I just learned something the fun way…

I noticed my sticks in the desktop humidor were feeling a little drier than usual. At first I blamed the usual suspect — temperature swings. Then I decided to double-check the numbers and… surprise! My hygrometer was off by a full 6% RH.

I did a little digging and apparently these digital guys are supposed to be calibrated every ~6 months. (Who knew they were that needy? Next they’ll be asking for Boveda spa days…)

Curious what everyone else’s experience is with this:

• How often do you calibrate your Govee (or other digital) hygrometers?

• Have you seen them drift this much before?

• Any idea why they can change so drastically over time?

• Tips/tricks for keeping them accurate longer?

I’m guessing age, sensor wear, maybe environment swings? But I’d love to hear from folks who’ve been at this longer than me.

Appreciate any input — always learning!

[ha_banos]

Personally, I lean more on the Boveda packs to gauge humidity levels. I've been through various digital display and Bluetooth hygrometers. Still have some going after many years. I've not found they vary 6% over time. But over temperature yes the accuracy is different at different temperatures. You can try testing at different temperatures to see. 

But I'm very relaxed about it now the cabinet is basically stable - whatever the hygrometer readings. The Boveda, and the cigars tell the real story. 

 

[gormag38]

I've basically only ever used the small bluetooth govees. Certainly have to verify the calibration when first getting them; I've had some be 3-5% off. I typically try to check mine once a year with the 'salt test' method. About five months ago I was struggling with why my rH was so high in my NC tupper and found that the calibration was off a good 5%. (Admittedly I hadn't checked the calibration in closer to two years if I'm being honest) After doing the salt test they started matching up a lot better with the Bovedas I have in there. 

I used to worry a lot more about what they were reading and would check in all the time. Now I check maybe once a month or so just to see how things are trending; I trust the Bovedas I have and I know that the tuppers/coolerdors I have are rock solid with holding in humidity.

[Yigal]

I’m a big fan of Bovedas too, but in really airtight setups like tupperdors or tight-sealing humidors, I’ve noticed they usually run about 2–3% higher than the number on the pack. Turns out that’s pretty normal. In a sealed environment there’s nowhere for the extra moisture to go, so the RH drifts a little above the printed level once everything stabilizes.

Temperature has a role in it too.

Most people just compensate by using one step lower (like 65s if they want to land around 67–68), or toss in a little Spanish cedar to help buffer things. But honestly, once a setup is stable, the cigars themselves are the best indicator that things are dialed in. If they’re burning and smoking right, that’s the real truth, not just the number on the hygrometer.

[my happy place]

Looks like I'm due for a re-calibration. Thanks!

According to my hydrometer my annual range is 64-67. I usually swap my Boveda packs for slightly higher RH during the winter months. I'm already feeling the drier air.

[JDoughty]

Have used Govee, currently using Inkbird, both for my humidors and all my meat dry aging and charcuterie setups. I use separate sensors with the same base wifi unit plus sanitary sleeves to avoid cross contamination since I play with multiple different types of fermentation and you (probably) don't want Bactoferm in your cigars even though it makes dried venison sausages delicious. I typically pair up sensors anyway since I want to keep an eye on multiple areas of whatever I'm doing temperature control on. Occasionally a sensor has gone wonky, more often from Govee than Inkbird, in which case I'll swap out the batteries, do the digital calibration process and try a different pairing. If none of that works I yell at the manufacturer and they usually send me a new sensor. Usually they are fine with some tweaking in the app. 

[Duder]

The Oasis Caliber V comes pre-calibrated and the ones I have are so dead on I use them to calibrate my various Bluetooth and Wi-Fi Hygros. Yes I’m a bit mental with my RH lol. 

[JDoughty]

1 hour ago, Lucas Buck said:

The Oasis Caliber V comes pre-calibrated and the ones I have are so dead on I use them to calibrate my various Bluetooth and Wi-Fi Hygros. Yes I’m a bit mental with my RH lol. 

Which wifi sensors are you using? I've had the best experience with Inkbird, though I am relying on them much less now that I installed a dry aging cabinet that does its own temperature and humidity control. When I was mucking around with more home hacked solutions for charcuterie and dry aging, I absolutely needed those texts to my phone to let me know if I was a degree out of calibration. 

For my 'hot stuff' - koji growing, accelerated garum and a few charcuterie processes specifically - I use Auber Precision Instruments controls on benchtop laboratory incubators. They make a wide range of products and some of them might be very handy for precision external control on something like a simple setpoint wine fridge or cigar oasis. Haven't tried them on any of my cold ferments or cigar storage though. 

[Duder]

I have a Sensor Push setup for Wi-Fi so I can look in from anywhere when not at home. 

[Rhinoww]

I have many containers each with a Govee and most with heartfelt beads and some with Bovedas. I use my “main” Coolidor which has both heartfelt and Bovedas at 65 and a weekly exposure to fresh air as my “source of truth”. Cigars from the Coolidor smoke well for me. All of the govees are numbered for the box they monitor, and spend a week or so in the Coolidor every year or so with their mates all calibrated to 65. I also have a few other hygrometers from different manufacturers to ensure the 65 reading is close what they show as well. Once I calibrated the first time I have not seen much need to adjust them beyond 1 or maybe 2 rh in rare instances 

From my perspective the cigars are all in smokable condition and are consistent across my collection. I think it’s close to 65, but with temperature differences between the basement floor and the top of the stack one does see some slight differences on the monitor. When I dig out a few sticks from a box in storage for the singles tray, those boxes get rotated. All in all the system works well for me, subject to some natural adjustments due to seasonal temp changes, although minimal. 

But to answer the OP question yes, one needs to calibrate against a baseline. My stash is largely been there for years in a sealed box in the dark, so little movement. I do segregate any new farm rolls to their own containers as they tend to come in pretty wet and need to acclimate for many months. Those are the boxes that show the most movement over time. Long answer to a short question but hopefully helpful to the discussion. 

[gormag38]

23 hours ago, Yigal said:

but in really airtight setups like tupperdors or tight-sealing humidors, I’ve noticed they usually run about 2–3% higher than the number on the pack. Turns out that’s pretty normal.

Always this. Seems most struggle with this when first starting out; I know I did. 

23 hours ago, Yigal said:

Most people just compensate by using one step lower (like 65s if they want to land around 67–68), or toss in a little Spanish cedar to help buffer things.

Agree with both of these, I've found the more Spanish cedar/cigar boxes in there the more stable things become.

[qs210]

I calibrate my govees every 8-12 months or so. Salt test.

[NYGuido]

I calibrate my Govees more than I should--every 4 months (I do it whenever I get my piano tuned for some reason).

[Yigal]

Good to see you calibrating your Govee sensors every 8‑12 months. I’m curious, in your experience:

1. How much drift have you observed between calibrations? (e.g., “+2%”, “–4%”, etc).

2. Do you only salt‑test (or Boveda‑calibration kit) or also compare with a trusted analogue hygrometer or multiple sensors?

3. Have you noticed the drift correlated with any particular conditions (battery age, large temp swings, resting in a tight tupperdor vs looser humidor)?

4. After you recalibrate, how stable is the reading over the next few months — does it creep again, or stay solid?

Thanks for sharing your routine.  It’s really helpful for those of us tuning our cigar setup.

[NYGuido]

11 minutes ago, Yigal said:

Good to see you calibrating your Govee sensors every 8‑12 months. I’m curious, in your experience:

1. How much drift have you observed between calibrations? (e.g., “+2%”, “–4%”, etc).

2. Do you only salt‑test (or Boveda‑calibration kit) or also compare with a trusted analogue hygrometer or multiple sensors?

3. Have you noticed the drift correlated with any particular conditions (battery age, large temp swings, resting in a tight tupperdor vs looser humidor)?

4. After you recalibrate, how stable is the reading over the next few months — does it creep again, or stay solid?

Thanks for sharing your routine.  It’s really helpful for those of us tuning our cigar setup.

1 - Between 2-4% in either direction;

2 - Boveda calibration kit and at the temperature the sensor will sit in. So I do the ones for my Raching separately from those that sit in room-temp Tupperware or desktop humidors;

3 - For the Raching, I just did my first recalibration, so no. For the others, when I turn the heat on in the fall/winter, when the weather gets more humid, and if there are any insane temp swings;

4 - The Raching fluctuates about +/-1% over the course of a day or so, anyway (which makes sense since it's electric); the others I can't tell because it sometimes means the Bovedas need to be changed.

FWIW, I just bought 8 Caliber Vs to use alongside the Govees.

[mikejh]

I've had a couple Govees for about a year now, so I decided to try a recalibration with the salt test. The first one was a couple degrees off, the second one is looking right on.

[GVan]

Use the digital, WiFi Govees for all of my needs. 5 of them in the office humidor at various levels and 1 each in every coolidor. I have not seen the drift that you mention, mine seem pretty stable. They do eat batteries so started buying the CR2450's in large pack format. Based on your experience, I think I'll calibrate every time they get a new battery about once a year.

[Gamehawker]

What does everybody think about the Boveda Smart Sensor and the CI Smart Sensor vs. SensorPus vs. Govee?

[JDoughty]

2 hours ago, GVan said:

Use the digital, WiFi Govees for all of my needs. 5 of them in the office humidor at various levels and 1 each in every coolidor. I have not seen the drift that you mention, mine seem pretty stable. They do eat batteries so started buying the CR2450's in large pack format. Based on your experience, I think I'll calibrate every time they get a new battery about once a year.

Inkbird wifi sensors are a lot easier on batteries IMO. I've used both systems and prefer Inkbird. Govee is usually cheaper, but Inkbird's customer service has been top notch. 

I have not used Boveda Butler (now the CI Smart Sensor), mainly because I already had Inkbird set up for fermentation, deer hanging, dry aging, charcuterie, etc. From what I hear from others, the app has issues and the unit itself is not better than the basic Inkbird or Govee sensor plus it is much more expensive. Both of those brands have very good apps that are easy to use and support multiple devices, including a wifi gateway. 

[Duder]

6 hours ago, Gamehawker said:

What does everybody think about the Boveda Smart Sensor  now the CI Smart Sensor vs. SensorPus vs. Govee?

I’ve been using SensorPush for about 20 years now and feel like it’s the gold standard. Still dead on after all these years even with battery changes every 2-3 years. I’ve got inkbirds, Oasis, Govee, SwitchBot & a couple others. SensorPush is also very stable and has great range. Also prefer their mobile app to the others I’ve tried. 

[NYGuido]

On 10/27/2025 at 4:48 AM, Lucas Buck said:

I’ve been using SensorPush for about 20 years now and feel like it’s the gold standard. Still dead on after all these years even with battery changes every 2-3 years. I’ve got inkbirds, Oasis, Govee, SwitchBot & a couple others. SensorPush is also very stable and has great range. Also prefer their mobile app to the others I’ve tried. 

I’ll give them a try. At some point, I’m gonna end up with 5 hygrometers per humidor. 😂 

[FOHgetaboutit]

Salt test calibration is the way to go. 

[tbelle7]

I use SensorPush to monitor the different shelves in my Vigilant Vault. As someone stated above, their app is a little more intuitive than Govee and I don't need to replace the batteries as often.