Can Paint Be Stored Outside in the Summer?

It’s never a good idea to store paint outside your house, especially if you intend to use it again. However, most garages are closed in the summer, and the heat inside would render your paint unusable if you kept it there. 

You can store paint in various ways to make it more useful in the future. Here are some things to avoid when storing paint cans:

Paint is flammable and should not be stored in a warm place or under direct sunlight

Paint still contains chemicals that, if overheated, could cause the paint to burst into flames. Consequently, it’s hazardous to position it in an area exposed to direct sunlight or even near a warm location. Always keep paint out of warm areas, especially if you want to reuse it and prevent accidents simultaneously.

Summer heat leads to evaporation

If the temperature is too high, the chemicals and water that have been mixed will begin to separate. A specific paint machine is required to combine the two chemicals. Your paint will no longer be able to be reused if you do not have this machine. When exposed to high temperatures, paint evaporates at an excessive rate, which causes the paint to become a solid mass rather than a fluid and viscous compound.

Direct heating leads to overheating paint cans

There is a wide selection of paint cans available. However, if your region is prone to heat waves regularly, you should avoid purchasing metal paint cans. Plastic containers for paint still experience overheating, but not to the same extent as metal paint cans do. This is because metal paint can overheat when there is too much heat in the environment, rendering the paint useless and hazardous to everyone.

Paint becomes thinner when it becomes hot

When the paint is exposed to excessive heat for an extended time, it dries out rapidly. Its binding agents and pigments wouldn’t be able to interlock, which would cause the paint to crack and peel more quickly. It would be especially significant if the heat had already compromised the protective layer.

Paint loses adhesion when hot

Excessive heat will reduce the adhesion and quality of the paint. If bonding is compromised, the paint protection will not adhere to the surface it was applied to and will dry much more quickly, resulting in a ruined finish.

Paint can explode when stored in direct sunlight

When left in the sun’s rays for an extended time, unopened metal paint cans and spray paint cans have the potential to burst into flames or explode. This occurs because the chemicals within the cans heat up without releasing any of their contents. If the cans are mishandled, the internal pressure caused by the substances heating up will cause an explosion. The worst part is the potential harm it could cause you or someone else in the area.

Best places to store paint in the summer

People should avoid being in direct sunlight or hot environments for the reasons stated above. In the following sections, you will learn more about where to place your new or used paint cans so that they don’t overheat and become useless in the future:

  • In the basement

Because it’s not too hot or too cold, the basement is an excellent hiding place for paint cans. Keep your paint fresh so that it can be reused. The basement is a great place to store paint cans, but remember that too much heat and cold can still damage your paint and render it useless in the future.

  • In the cupboard

Your paint cans will remain in the best condition if you hide them in the cupboard, as this location has the perfect temperature. You wouldn’t have to worry about your paint being ineffective when the time comes because there would be just the right amount of heat and coolness to achieve that balance.

When children are present and the cupboard contains paint, it can become hazardous. Therefore, it’s best to store the paint can in a cupboard that is either rarely or never used.

  • In the fireproof metcal cabinet

Putting it in a fireproof or flammable cabinet is a good option when you don’t have a place to store a paint can. Flammable cabinets can absorb an explosion if the paint can is overheated. It’s also a safe alternative to keeping it in your basement or storage, as it blocks most of the outside stimuli.


What part of paint evaporates?

One of these chemicals is water. When the paint is subjected to excessive heat, once the water component of the paint has separated due to the heat, the water will then evaporate, rendering the paint ineffective. It would not have been possible to apply the paint to the wall it was going to be on if the container hadn’t contained any water.

How long does it take for paint to evaporate?

When exposed to heat, watercolors and paints based on acrylic have a greater tendency to evaporate. When heat is applied to the container, these two kinds of paint take six to eight hours to disappear. If the color indicates that it’s dry, evaporation typically takes 1hour.

How long does it take for a can of paint to dry out?

When a can of paint is exposed to airflow, the paint inside typically becomes dry within a few days. This suggests that allowing the can to remain slightly ajar may facilitate a more rapid drying process. Because drying out paint will likely take some time, it’s in everyone’s best interest to keep it out of the reach of children.


Depending on your chosen brand, the price of a single can of paint is extremely high. Therefore, keeping leftover paint in good condition should always be a priority since, without the proper storage, both applied paint and unapplied paint will no longer look good and will no longer be usable.

It’s best not to store paint outside in the summer if your region is affected by heat waves throughout the year. Doing otherwise leads to quick evaporation and considerable loss of adhesion. The best course of action is to store it in the basement, in cupboards, or in other cold places that aren’t in direct sunlight.