Dry Herb Vaporizer Temperature Guide
October 11, 2026
A good dry herb vaporizer is the closest thing a flower lover has to a tasting glass. It lets you meet a cultivar before the fire gets to it, and it will tell you, quite bluntly, whether the grower dried and cured the harvest with any patience. Most people never hear any of that, because they set the dial once, somewhere hot, and leave it there for years.
We did the same for a long time.
The pages that rank for this question cover the same ground, and we will cover it too, starting with the temperature bands and the boiling point charts everyone reprints. Where we part ways is the conclusion. They treat temperature as a single number you pick for an effect. We think the better use of the dial is to move it, in steps, through a single load, and to listen to what the flower says at each one.
What the heat is doing
Smoke is what you get when plant matter burns. Vapor is what you get when you warm it enough to release the resin's cannabinoids and aromatics as a mist, and stop short of setting the leaf on fire. Combustion of dry flower is usually put somewhere around 230°C (446°F), so every useful vaporizer setting lives below that line. Those compounds sit almost entirely in the resin heads on the surface of the bud, the trichomes, which is why a vaporizer can empty them while leaving the plant material itself mostly intact.
The three bands everyone agrees on
Low runs from roughly 160 to 177°C (320 to 350°F). The vapor is thin and cool and tastes the most like the jar smelled. THC is commonly given a boiling point of about 157°C (315°F), so even this band does real work, though the effect tends to arrive gently.
Middle sits between about 177 and 204°C (350 to 400°F), and it is where most manufacturers set their default. Clouds get visibly thicker. Flavor is still there, with the bright top notes giving way to something rounder and more peppery as you climb.
High is anything from 204 to roughly 220°C (400 to 430°F). The vapor turns dense and warm, and the taste drifts toward toast and then, near the top, toward popcorn. Past that, you are getting close enough to combustion that the point of vaporizing starts to disappear.
Why we distrust the boiling point charts
Every guide prints a chart. Myrcene boils at around 167°C, limonene near 176°C, linalool near 198°C, and so on down a tidy column, with the suggestion that you can dial in one terpene at a time like stations on a radio. Two problems. The charts disagree with each other, sometimes wildly (one large Canadian retailer lists caryophyllene at 119°C, while chemistry references put its boiling point well above 250°C). And aromatic compounds do not wait for their boiling point to leave. They evaporate steadily below it, which is exactly why an open jar on a windowsill goes flat, as our guide to storing cannabis flower explains.
Treat the chart as a rough order of departure.
The lighter, brighter molecules tend to leave first and the heavier, spicier ones last. That order is genuinely useful, and the precise numbers matter far less than the sequence. If you want the vocabulary for what each family smells like, our terpene profiles guide has it.
Conduction and convection
Conduction devices heat the chamber walls, and the flower touching those walls heats fastest; convection devices push hot air through the load instead. In practice, conduction units run a little hotter at the edges than the display admits, and they reward a stir halfway through. Convection units (the tabletop Volcano from Storz & Bickel is the famous one) heat more evenly and usually let you trust the number on the screen. So a figure that tastes perfect in one device can taste scorched in another, and the temperature advice you read anywhere, ours included, should be adjusted to the machine in your hand.
Grind for the device. Conduction likes a medium-fine grind packed snugly against the walls, while convection prefers something a little coarser and looser so the air can find its way through.
Stepping a bowl like a tasting flight
This is the part the other guides leave out, and it is the reason we bothered writing this page. Load the chamber once. Start at around 170°C and take two or three slow draws, paying attention to the aroma more than the cloud. Then raise the heat by about ten degrees and repeat. Keep going until you reach 200 or 205°C, and finish there.
What you get is the cultivar in courses. The first draws carry the top notes, citrus and fruit and the sharp green things that disappear first from a jar. The middle steps bring out the body, the pine and the pepper. The last few belong to the base, which usually tastes of wood or, in older hash-plant lines, of hash itself. A flower with real depth changes character at every step. A shallow one tastes the same three times and then tastes of toast.
The low step doubles as a test of the grower. Craft flower that was dried slowly and cured for weeks (the process our piece on what makes cannabis craft describes) tastes clean and specific at 170°C. Flower that was rushed through a hot dry tastes of hay or cut grass at that same setting, and nothing you do with the dial later will bring the missing notes back. Fire covers that fault up. A vaporizer at low heat will not.
Write down what you notice at each step if you keep tasting notes; the method in our guide to cannabis tasting notes works well alongside it.
Reading the spent bowl
Empty the chamber and look. Evenly light tan to medium brown means the session did its job. Pale green patches mean part of the load was barely touched, usually from packing too tightly or skipping the stir. Dark brown or black flecks mean something got too hot, and you probably tasted it. The spent material still holds some of its cannabinoids, much of it changed by the heat, and some people save it for cooking; whether that is worth the effort is a matter of taste, and we mostly do not bother.
On strength
Higher settings feel stronger, and part of that is simply more vapor per breath. But we would caution against chasing a heavy session with heat alone, especially with flower that has sat around for a while and already drifted toward the sleepier CBN. With anything new to you, start at the low end and give each step a few minutes before deciding you feel nothing.
Our position
If we had to choose one number for a beautiful jar, it would be somewhere around 185°C (365°F), hot enough to feel and low enough to taste. But we rarely choose one number. We step, from the low 170s up past 200, because a craft cultivar spent months developing a whole arc of aroma and the flight is the only way we know to hear all of it from a single bowl. Run it hot when you just want the evening to start. Run it in steps when the jar deserves your attention.
Most of the good ones do.