Cigars are sensitive to their environment in a way most everyday objects aren't. Too dry, and they crack, burn too fast, and lose flavor. Too humid, and they risk mold and an uneven burn. A cigar humidor exists to hold cigars in the narrow humidity range where none of that happens — and it does that through four parts working together, not one single feature.
The parts that come together to make a cigar humidor work
1. The Seal
Everything else depends on this. A humidor is only as good as its ability to keep the air inside separate from the air outside — without a tight seal, humidity constantly leaks out and outside air constantly leaks in, and no humidifier can keep up with that exchange.
This is why seal quality is usually the first thing worth checking on any humidor, before size, wood, or looks.
2. The Wood
Spanish cedar lines the interior of nearly every quality humidor for a reason: it naturally absorbs and releases moisture in response to the surrounding air, which helps buffer small humidity swings before they reach your cigars.
It also imparts a subtle aroma that many cigar smokers consider part of the aging process, and it helps deter tobacco beetles.
3. The Humidifier
This is the active component — the part that actually adds moisture to the sealed environment rather than just responding to it, the way the wood does.
Two-way humidity packs, gel jars, foam pads, and electronic units all do this differently, but the underlying job is the same: hold the air inside at your target humidity, day after day.
4. The Hygrometer
The hygrometer doesn't do anything to the humidity itself — it just tells you what it is. That monitoring role matters more than it might seem: it's how you know the seal is holding, the humidifier is working, and everything is functioning as it should, without having to open the lid and check your cigars directly.
Why All Four Matter Together
None of these four parts can do the job alone.
- A perfect seal with no humidifier just holds whatever humidity was there when you closed the lid.
- A great humidifier in a leaky humidor is fighting a losing battle against outside air.
- A hygrometer tells you what's happening but can't fix anything.
It's the combination of the seal, wood, humidifier, hygrometer that makes a cigar humidor actually work, which is also why cutting a corner on any one of them tends to show up as a problem eventually.
Ready to shop for one? Our full guide on what to look for before you buy walks through all four of these factors in more depth, plus a few more worth knowing.
Our Cigar Humidors make excellent gifts! Read our gift guides to become everybody's favourite gift-giver!
Frequently Asked Questions
What humidity level does a humidor maintain?
Most humidors are set up to hold 65–70% relative humidity, with 69% being a common target for long-term cigar storage.
Why is Spanish cedar used instead of other woods?
Spanish cedar naturally absorbs and releases moisture in response to the surrounding air, which helps stabilize humidity inside the humidor. It also imparts an aroma many cigar smokers value and helps deter tobacco beetles — qualities most other woods don't offer.
Can a humidor work without a hygrometer?
It can technically hold humidity without one, but you'd have no way to confirm it's working correctly without opening the lid and checking your cigars directly. A hygrometer is a monitoring tool, not a functional requirement — but it's a very useful one.
Why do cigars need a humidor at all?
Cigars are sensitive to humidity in a way that affects both flavor and safety. Too dry, they crack and burn too hot; too humid, they risk mold. A humidor exists to hold them in the narrow range where neither happens.
