Can You Spray Paint in The Rain? [Explained!]

Can you spray paint in the rain? This is one of those questions that people will debate for years. There are some who say that you can’t spray paint in the rain, and there are others who claim that this is not true. In this blog post, we’ll try to answer these burning questions about spraying paint in the rain.

Can you spray paint inside when it is raining?

In most cases, you can spray paint inside when it is raining. However, there are a few conditions that need to be met for this process to work out correctly.

A precipitation-free day with low humidity and wind is preferred. If it’s raining or if there’s high humidity kicking around, then your results will not come out as favorable.

The best weather conditions for this process are warm and dry, or cold but with low humidity levels. This is because the spray paint will easily stick to the surface when exposed to these kinds of weather elements.

If you’re using spray paint indoors, then it’s highly recommended that you cover up any nearby objects before spraying your product; otherwise, they may become stained with the paint.

When spraying your paint indoors, always be sure to do so in a well-ventilated area. This will help to avoid any inhalation hazards that could come along with using spray paint.

In short, you can definitely spray paint inside when it is raining – but it’s not advisable to do so if the weather conditions aren’t in your favor. Make sure to take all of the necessary precautions before you start spraying, and be prepared for a less-than-stellar outcome if the weather takes a turn for the worse.

Can you spray paint inside when it is raining?

Can you spray paint outside while it’s raining?

No, you cannot spray paint outside if it is raining. The rain will wash away the paint and ruin your project, so you have to wait for a dry day before continuing with whatever painting or staining projects that you are working on.

In case of very heavy downpours, however, then your only option would be to put off the work until after the rain has stopped. The same applies if it is snowing, hailing, or there are other inclement weather warnings in effect for your area.

In the case of heavy downpours that you cannot wait out, though, then you can consider putting a tarp over what needs to be painted and weighing this down with some bricks around the perimeter of the tarpaulin so that it does not blow away in the wind.

Also read: How to fix spray paint drips?

Weather considerations when spray painting outside in the rain

When planning to spray paint, several weather factors need to be taken into account to achieve the best results and avoid complications. In this section, we’ll discuss the following aspects: Temperature and Humidity, Weather Forecast and Timing, Rain and Wet Surfaces, and High Humidity and Drying Time.

Temperature and humidity

The ideal weather conditions for spray painting are warm and dry, or cold with low humidity levels. When it’s too hot or the humidity is high, the paint may not adhere properly or dry as expected. Thus, it’s important to consider both temperature and humidity when planning your spray painting project.

Weather forecast and timing

Checking the weather forecast is crucial before starting any spray painting project. Aim for several sunny days in a row to ensure optimal conditions for painting and drying. Should poor weather be predicted, adjust your plans accordingly and wait for more favorable conditions to guarantee the success of your project.

Rain and wet surfaces

Working on wet surfaces is not recommended for spray painting. If the surface is visibly wet, even with just a few raindrops, it’s best to wait until it dries completely before painting. Rain can compromise the paint’s adhesion and lead to an undesired outcome. To determine if a surface can be painted, ensure it’s not actively wet before proceeding.

High humidity and drying time

High humidity levels can affect the drying time of the paint, as well as the quality of the finish. Water-based paints such as latex acrylic paints generally need at least 2 hours of sunshine before they’re exposed to rainfall.

If stormy weather is expected, two hours of sunshine may not be enough to create a durable finish that can withstand rougher weather. Therefore, pay close attention to humidity levels when planning your spray painting project.

What happens if it rains on fresh spray paint?

If it rains while you’re spray painting, the paint will likely run and create an uneven finish. In most cases, you’ll need to wait for the rain to stop before resuming your work.

However, if the weather is very humid, spraying in the rain may be unavoidable. In this case, just make sure to take extra care to avoid runs and streaks. To avoid heavy rain, spray when the sun is out.

While spray painting outside, if suddenly it starts to rain, stop spray painting and wait for the weather to clear up. If it is raining very lightly, you can continue but be careful not to create runs in your paint job because if water gets into wet fresh paint, it will run no matter what.

How long do you have to wait to paint after rain?

In general, you should wait for the rain to stop before resuming your painting project. However, if you’re using spray paint then you may need to wait for the humidity levels to drop before spraying again. High humidity can cause the paint to run or drip, resulting in an uneven finish.

After the rain stops, wait for a few more hours to dry the ground completely and then start painting. The paint will not bond with the surface if it is wet, so make sure to wait for everything to be fully dried before starting again.

If you are using a spray paint can, then it is very important that you wait for the rain to stop because if there is any moisture in the air, the paint will dissolve and come off.

Also read: How to unclog a spray paint can?

You should also protect your work area from the rain with a tarpaulin because any water that gets on it could ruin the surface underneath as well as cause splatters of spray paint to happen, which is likely undesirable if you are trying not to get paint everywhere.

If you are using a spray paint can, then it is very important that you wait for the rain to stop before resuming work, or else all of your hard work will be ruined in seconds.

How long does spray paint take to dry?

The drying time for spray paint can vary depending on the type of paint, the humidity, and the temperature. In general, however, most spray paints will be dry to the touch within minutes.

It is important to note that full drying time may take up to 24 hours. I have written an article on the drying time for spray paint that can provide more information: How long does spray paint take to dry?

Can you scrape paint in the rain?

This is a question that many people ask, and the answer is yes – you can scrape paint in the rain. However, it’s not recommended, as the scraping process will be more difficult and you may end up with wet paint all over your hands and clothes.

If you must scrape paint in the rain, make sure to use an old towel or a tarp to protect your clothes and skin.

Another thing to keep in mind when scraping paint in the rain is that the paint may not come off the surface as easily, so you may need to use more force than usual.

Be careful not to damage the surface you’re scraping on, and be sure to wear gloves if you’re using a sharp object like a knife or a screwdriver.

Helpful tips and techniques for spray painting in the rain

Preparation and surface

When spray painting in the rain, it’s crucial to prepare the surface properly. Ensure it’s clean, dry, and free of any debris. If the surface is wet, use a towel or cloth to remove any water before painting. For an even finish, lightly sand the surface to create a perfect base for the paint to adhere to.

Using a tent or enclosure

Rain can affect the quality of your spray paint job, so using a tent or enclosure is highly recommended to protect the painting area. This can be a simple tarpaulin or a more complex structure like a popup tent. Make sure it’s secure, properly ventilated, and provides ample space for your painting project.

Ventilation and overspray

Proper ventilation is essential when spray painting indoors or in an enclosed space, especially when it’s raining outside. Open windows and doors, or use exhaust fans to provide fresh air. Be mindful of overspray, which can occur with spray paint, even in a controlled environment.

Cover surrounding surfaces with drop cloths, plastic sheeting, or newspaper to protect them from paint.

Quick Tips:

  • Use a slow setting on your sprayer to prevent paint runs
  • Apply light coats of paint to avoid drips and gradually build up coverage
  • Allow each coat of paint to dry completely before applying the next

Safety and protective equipment

Spray painting requires proper safety measures regardless of weather conditions. Wear a respirator to protect yourself from harmful paint fumes. Additionally, use goggles to shield your eyes from airborne paint particles, and wear gloves to protect your hands. Cover your body with long sleeves and pants to prevent skin contact with the paint.

Consider the type of paint you are using in the rain

When considering spray painting in the rain, it’s essential to know the different paint types and how they react to moisture. In this section, we will discuss acrylic paint, latex paint, and varnish.

Acrylic paint

Acrylic paint is a water-based paint that is versatile and dries quickly. It’s typically used for a wide range of applications, from fine art to DIY projects. In general, acrylic paint is not suitable for painting during rainy or humid conditions, as the water in the air can cause the paint to become diluted and prevent it from adhering properly to the surface.

When exposed to rain, acrylic paint can become runny and lose its vibrant colors. Therefore, it’s best to use acrylic paint when the weather is clear and dry, or if working indoors, ensure proper ventilation and low humidity.

Latex Paint

Latex paint, also known as water-based paint or emulsion paint, is another popular choice for both indoor and outdoor painting projects. This type of paint is known for its ease of application, quick drying time, and low fumes. Like acrylic paint, latex paint is not recommended for use in rainy conditions.

The high humidity levels can cause the paint to become watery, preventing it from adhering correctly to the surface and leading to an uneven, splotchy finish. If you must paint with latex paint during damp or humid conditions, try to do so in a well-ventilated area with low humidity to minimize the effects of moisture on the paint’s drying process.


Varnish is a protective coating applied over paint or bare wood to provide a durable finish and protect the surface from moisture, dirt, scratches, and other damages. There are different types of varnishes available, including oil-based and water-based options.

In general, it is inadvisable to apply varnish in rainy or highly humid conditions, as moisture can prevent the varnish from curing properly, resulting in a tacky, uneven finish. Oil-based varnishes are particularly sensitive to moisture and may take longer to dry in humid environments. To achieve the best results with varnish, apply it on a clear, dry day, and ensure proper ventilation if working indoors.

Final thoughts on spray painting in the rain

Always make sure to read the manufacturer’s instructions before beginning any painting project. Some spray paints can’t be sprayed in the rain, while others may require a different method or application.

If it’s too wet or humid outside, consider waiting for a better day before beginning your project. This will ensure the paint goes on smoothly and looks great at the end of your work.

I hope this article has answered all questions you may have about whether you can spray paint in the rain.



Can you spray paint furniture in rainy weather?

Yes, you can spray paint furniture in the rain. But you have spray paint your furniture indoor with proper ventilation.

Can you spray paint a car in the rain?

It is not recommended to spray paint a car in the rain. You should spray paint a car in a garage or in dry weather.

Can you spray paint wood in the rain?

You can spray paint wood in the rain, But make sure that the wood does not get wet or the paint will not stick.

Is it bad to spray paint when it’s raining?

Spraying paint when it is raining is not recommended because the paint will not dry properly and could cause the paint to peel.

Can you spray paint in any weather?

You can spray paint in most weather conditions, but it is not recommended to spray paint in the rain during high humid conditions.

How long does Rustoleum spray paint need to dry before rain?

You should wait 24 hours before it is dry to touch. It may take 1 or 2 days to be completely dry.

Can you spray paint in damp weather?

Yes, it is possible to paint your items in damp weather. You can spray paint but make sure you are doing this inside with proper ventilation. If you are doing it outside make sure the humidity is low.

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