CIGARIO™For businessesEN · CS
Storage · 5 min read

Cigar humidor guide: humidity, seasoning and care

Cigario editorial · updated 1 October 2026
Mahogany desktop cigar humidor

A cigar is a natural product that keeps breathing after it is rolled. Too dry and it cracks and burns hot; too moist and it draws badly and can grow mold. A humidor simply keeps cigars in a stable climate, and it is much easier to run than it looks.

Key takeaways
  • Aim for 65–70% relative humidity and 18–21 °C (64–70 °F).
  • Stability beats precision: avoid big swings.
  • Season a new wooden humidor before you fill it.
  • Two-way humidity packs are the easiest way to start.
  • Calibrate your hygrometer and check it weekly.

Why humidity matters

The target zone
405060708090 65–70 %relative humidity
Too dry · <60 %cracked wrapper, fast and hot burn
Ideal · 62–70 %Room temperature: 18–21 °C (64–70 °F)
Too wet · >72 %tight draw, uneven burn, mold risk

Steady beats perfect: a stable 67% is better than a jumpy 70%.

Cigars are rolled at a humidity of around 70% in the tropics. In a normal heated room, humidity can drop to 30–40%, and an unprotected cigar dries out within days to a few weeks. Too much moisture is just as bad: the tobacco swells, the draw tightens and mold becomes a real risk.

ConditionWhat happens
Below 60%Wrapper becomes brittle and can crack; the cigar burns fast, hot and harsh.
62–70%The comfort zone. Many smokers prefer 65% for full-bodied cigars and up to 69% for milder ones.
Above 72%Tight draw, uneven burn, frequent relights and a growing risk of mold.
Above 24 °C (75 °F)Tobacco beetle eggs can hatch. Keep the humidor away from heat and sun.

Choose the right humidor

Airtight box ("tupperdor")Under 25 cigars · cheapestA food container with a humidity pack. Not pretty, but it seals extremely well.
Desktop humidor25–100 cigarsSpanish cedar lining, a good seal and a hygrometer. The classic choice.
Cabinet humidor100+ cigarsFor a growing collection. Larger volume means more stable conditions.
Cooled humidorWarm climatesAdds temperature control. Worth it if your room regularly goes above 24 °C (75 °F).
Travel caseDays, not weeksProtects cigars on the road. Add a small humidity pack for longer trips.

Season a new wooden humidor

New cedar is bone dry. If you put cigars straight in, the wood pulls moisture out of them. Seasoning means letting the wood absorb moisture first, slowly, until the reading stays steady.

Seasoning a new humidor
Target 40%50%60%70% Day 01234567 Add cigars

The cedar first absorbs moisture. Wait until the reading holds steady for 2–3 days.

Follow the maker’s instructionsSome humidors come pre-seasoned or need a specific method.
Add moisture slowlyPlace a small bowl of distilled water or seasoning humidity packs inside, and charge the humidifier with distilled water or PG solution. Never soak or rinse the wood.
Close it and waitLeave it for 5–7 days. The reading will rise, overshoot or dip, then settle.
Confirm stabilityWhen the reading stays in your target range for 2–3 days, remove the bowl.
Add cigars graduallyPut cigars in over a few days so the wood and the cigars can balance.
Cigars can rest in their cedar box inside the humidor. The box buffers changes and protects the wrappers.
Cigars can rest in their cedar box inside the humidor. The box buffers changes and protects the wrappers.

How to keep the humidity

Two-way humidity packsEasiestRelease or absorb moisture to hold a set level, typically 62, 65, 69 or 72%. Replace when they turn hard.
PG solution humidifierClassicA foam or crystal humidifier filled with a 50/50 propylene glycol solution that buffers humidity. Never use tap water.
Humidity beadsStableSilica beads tuned to a level, refilled with distilled water. Very consistent in larger humidors.
Electronic humidifierCabinetsA fan with a sensor for large volumes. Needs regular cleaning.

Calibrate your hygrometer

Cheap analogue hygrometers can be off by 5–10%. Digital ones are better, but check them too. The classic salt test costs almost nothing:

Make a salt pastePut a spoon of table salt in a bottle cap and add a few drops of water until it is damp, not liquid.
Seal it with the hygrometerPlace the cap and the hygrometer into a zip bag or airtight box and close it.
Wait 8–12 hoursKeep it at room temperature, away from sun.
Read the resultA correct hygrometer shows 75%. If it reads 72%, it is 3% low; remember the offset or adjust it.

Problems and fixes

ProblemLikely causeFix
Humidity keeps droppingLeaky seal, dry wood, empty humidifierCheck the seal with a paper slip in the lid; refill or add a pack.
Humidity too highToo much water, warm roomLeave the lid open briefly, remove a pack, add a 62% pack.
Fuzzy blue-green spotsMoldRemove affected cigars, wipe the interior, lower humidity, check temperature.
Fine white crystals that brush offPlume (bloom)Harmless and rare; it simply brushes away.
Tiny pin holes in cigarsTobacco beetleFreeze cigars in sealed bags, then thaw slowly in the fridge; check temperature.

A simple routine

  • Weekly: check humidity and temperature, refill or replace packs.
  • Monthly: rotate cigars from top to bottom and look for spots or holes.
  • Every six months: recalibrate the hygrometer with the salt test.
  • Always: keep the humidor away from windows, radiators and air conditioning.
Track what is insideThe Cigario humidor keeps your inventory, values and smoking history in one place.Get the app ›

Frequently asked questions

What is the best humidity for cigars?

Most smokers keep 65–70%. Lower (around 65%) suits full-bodied cigars and a crisp burn; higher (up to 69–70%) suits milder cigars.

Should I remove the cellophane?

Either works. Cellophane slows down exchange with the humidor and protects wrappers; without it, cigars age a little faster and share aromas more.

Can I store cigars in the fridge?

Not long term. A fridge is too dry and smells of food. It is useful only for freezing against beetles, in sealed bags.

Can different cigars share one humidor?

Yes. Strongly aromatic or infused cigars are best kept in their own box or a separate container.

How long can cigars stay in a humidor?

Years, if the conditions are stable. Many smokers rest new cigars for a few weeks before smoking them.

The golden rules65–70%, 18–21 °C (64–70 °F), a sealed box, a calibrated hygrometer and a weekly glance. That is all a happy humidor needs.

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