Joopie
Schrijver
24 sep. 2026
You are standing at the wall, it is about five degrees, and the line you pulled blind last month comes out as a spitting mess. You shake again and it stays rough. Before you question your can control: it is the temperature.
Good news first: modern graffiti cans work fine in winter. You do not have to pack your paint away until March and there is no winter version to buy. Cold does change how a can behaves, and once you know what changes you still get everything out of it. Below is what shifts, which temperatures count and what you do differently on a cold day.
What happens inside your can when it gets colder
A spray can holds paint and propellant. That gas pushes the paint out and atomises it as it leaves the cap. The colder the can, the lower the pressure and the thicker the paint. Both work against you: less pressure means less force behind the mist, thicker paint means bigger droplets.
European Aerosols, the manufacturer behind Belton Molotow among others, lists spitting, orange peel and runs as the classic consequences of too little warmth. You probably recognise those three. It is not your technique, it is paint that does not break up finely enough.
The propellant also cools down as it escapes, so your can gets colder while you paint. A can you empty in one long go keeps getting slower.
Three temperatures that matter
People check the thermometer and think they know. Three temperatures are in play and they are rarely the same.
The first is your can. European Aerosols puts the sweet spot at 20 to 25 degrees, and that applies to the can, the surroundings and the object together. You will not hit 20 degrees outside, but you can get your cans out the door warm.
The second is the air. That one decides how fast your paint cures. Count on waiting longer between layers than you are used to, even when the paint feels dry.
The third gets forgotten almost every time and matters most: the wall itself. Concrete and steel hold on to the cold of the night and lag behind the air. A wall in the shade stays colder than the air for hours.
The wall is colder than the air
The reason that matters is condensation. As soon as a surface drops below the dew point, moisture settles on it. You do not always see that film, but your paint lands on it. The coatings industry uses a rule from standards such as ISO 8502-4 and ASTM D3276: the surface has to be at least 3 degrees warmer than the dew point.
You do not need measuring gear for that. Put your hand on the wall. If it feels damp and cold, wait a while. A north-facing wall after a clear night is the classic trap: wait until the sun has been on it for a few hours, or find another side of the building.
What you do differently on a cold day
The adjustments are small and they save you a lot. Here is what works:
- keep your cans indoors: take them out warm and keep them in a bag, not loose on the ground
- shake longer: a full minute instead of the ten seconds you normally get away with
- move closer and slower: that makes up for the weaker mist
- build thinner layers: a thick layer of cold paint is exactly what runs
- rotate your cans: let one warm up in your bag while you work with the other
- do your fills first: your first can is up to temperature before the outline goes on
Your cap choice deserves extra attention. A skinny cap needs the finest atomisation so it suffers first, a fat cap or a soft cap copes better. If you want to know what each cap does, we broke it down in which spray can caps are there.
The type of paint matters too: a high pressure can has more margin when the pressure drops, a low pressure can slows down sooner. We covered the differences in which paint is best for graffiti.
Warming your cans, this far and no further
Plenty of writers park their cans by the radiator before heading out and it usually goes fine. There is a limit you do not want to cross though. European Aerosols puts 50 degrees as the absolute ceiling, not as a target. A can is pressurised and heat raises that pressure. If you warm one up, keep an eye on it, aim for hand warm and never leave a can unattended on a radiator or in hot water. A can that lets go in your living room or storage is not something you want.
What does work is holding on to mild warmth. Let your cans sit at room temperature until you leave, keep them in a closed bag on the way, not in the boot, and tuck them under your arm or inside your jacket while you are not spraying.
At and below freezing, keeping them warm really starts to count. What works best for us is a cool box with heat packs in it. A cool box insulates both ways, so it holds warmth in as well as it normally keeps heat out. Your cans stay up to temperature for hours. Heat packs come nowhere near that 50 degree limit, so you stay inside the margin. That is our own experience after a few winters, not a manufacturer instruction.
Where your paint spends the winter
Our own rule: store your cans between 10 and 25 degrees and keep it dry, below 60 percent humidity. An unheated shed does not get there in January. Water based paint is more sensitive than solvent based, because it can actually freeze.
Bring your stock inside for the winter. A cupboard or a corner of a utility closet is enough. Your cans last for years when they are stored right.
Bad weather is blackbook weather
Cold does not have to keep you inside, wet walls and early darkness do. On days like that your letters move forward instead of your pieces. Sketching, sharpening outlines, picking apart letter structure: that work shows on the wall the moment the weather turns. If you are only getting going, start with how to start with graffiti.
Not sure about your caps, your cans or your colours, send us a message or a DM. We think along with you. Fresh stock is in the spray paint and caps category.
