Can You Paint Interior When Its Raining?

Paint interior when raining

Giving your home’s interior a makeover can be very exciting. But what happens when it starts pouring? Can you paint interior when it’s raining?

Yes, you can – but under the right conditions!

This article will explore how you can still get the best result for your interior painting project (despite the gloomy weather). For good measure, we’ll also delve into the following:

  • Risks of painting your interior walls while it’s raining
  • When’s the best time to paint your home interior
  • How to properly paint your interior despite the weather
  • And more!

Is It Possible to Paint Interior Walls When It is Raining?

So let’s get straight to the point: Can you paint interior when it’s raining?

The TL;DR is: Yes, you can!

However, bear in mind that the humidity and temperature produced by the rain can affect the overall quality of the result. According to a study by Fariborz Haghighat and Lisa De Bellis, it can even have a huge effect on the emissions produced by the paint and varnish. You must carefully plan your painting project to counteract these and other factors. That means constantly monitoring the temperature, keeping the work area dry, and using the correct type of paint.

What are the Risks of Painting Interior Walls When It is Raining?

While painting interior walls is quite common, doing it during rainy weather can pose risks that could negatively impact the final result. These include:

Poor Adhesion

Rain and high humidity levels can hinder paint adhesion. Moisture on the walls can prevent the paint from properly bonding to the surface, leading to peeling, chipping, and an uneven finish.

Extended Drying Time

Rainy conditions slow down the drying process of paint. This extended drying time increases the chances of dust, dirt, and other debris sticking to the wet paint, marring the smoothness of the finish.

Uneven Finish

The presence of moisture in the air can cause paint to dry unevenly, resulting in blotches and streaks on the walls. This compromises the aesthetic appeal of the painted surfaces.

Mould and Mildew Growth

Rain and humidity provide ideal conditions for mould and mildew growth. If the walls have any existing moisture issues, painting over them during rainy weather can trap these harmful organisms beneath the paint.

Paint Blisters and Bubbles

Rainwater can seep through cracks and imperfections in the walls, causing the paint to blister or bubble. This not only ruins the appearance but also requires corrective measures.

Lost Time and Resources

Painting in rainy conditions might require repainting sooner due to poor adhesion and compromised finish, wasting time and resources.

Structural Damage

If water infiltrates the interior through leaks, it can damage the structural integrity of walls, leading to more significant repair work.

When is It Safe to Paint Interior Walls?

Say you decided to postpone your painting project due to the rainy weather. If that’s the case, reschedule it during these periods:

Spring and Fall

These seasons often offer moderate temperatures and humidity levels, creating ideal conditions for painting. Avoid extreme heat or cold when interior painting, which can affect the paint’s adherence and drying.

Mild Weather Days

Opt for days with temperatures between 10°C to 29°C. This range ensures that the paint can adequately cure without drying too quickly or taking excessively long to dry.

Low Humidity Periods

Painting during periods of lower humidity prevents excess moisture from affecting paint drying times. High humidity can lead to extended drying times and potential paint issues.

Natural Daylight Hours

Painting during the daytime with ample natural light allows you to accurately see the colour and coverage as you apply the paint. This aids in achieving a consistent finish.

How to Paint Interior Walls When It Is Raining

Unexpected rainy weather can present challenges in your painting project. However, with careful planning and preparation, you can still successfully paint your home’s interiors despite the weather outside. Just follow these tips:

Use Low-VOC Paint

Opt for low-VOC (volatile organic compounds) or water-based paints. These paints have less odour and will dry faster in humid conditions, making them suitable for rainy weather.

Check Humidity Levels

Before starting, use a hygrometer to measure the humidity levels in your home. Maintain humidity levels below 60% to ensure proper paint drying.

Improve Airflow

Despite the rain, ensure good ventilation in the room by using fans and opening windows. This will help circulate air and expedite the drying process.

Set Up Proper Lighting

Adequate lighting is crucial for a flawless paint job. Position bright lights to accurately see the surfaces you’re painting, as rain-induced gloom might affect visibility.

Prep the Surfaces

Properly prepare the surfaces by cleaning them thoroughly and fixing any imperfections. Rainy weather can exacerbate mould or mildew growth, so address these problems before painting.

Use Dehumidifiers

If necessary, use dehumidifiers to control the indoor moisture levels. This will help prevent excess moisture from interfering with the paint’s adhesion and drying.

Time Your Painting

Choose a time when the humidity is lower, typically during the afternoon. This could be a window when the rain subsides, or the air is drier indoors.

Work in Small Sections

Paint one small section at a time, focusing on proper coverage. This approach allows you to manage drying times effectively and minimise the risk of paint streaking.

Extend Drying Time

Rainy weather can slow down the paint’s drying process. Be patient and give each coat of paint ample time to dry before applying additional coats.

Plan Touch-Ups

After the first coat dries, inspect the painted surfaces for any imperfections. Touch up as needed to ensure a consistent and flawless finish.

Monitor Weather Conditions

Keep an eye on weather forecasts. If the rain intensifies or humidity levels become too high, consider postponing the project.

How to Address Condensation Issues

One of the challenges you’ll face when painting interiors on rainy days is condensation. To address this issue, try these tips:

Choose the Right Paint

Opt for a water-based low-VOC paint product since they dry quicker than oil-based ones. This helps minimise the impact of moisture on the paint’s surface.

Warm the Room

Keep the room at a comfortable temperature to minimise the temperature difference between the walls and the air, reducing the likelihood of condensation forming.

Use Low-Sheen Finishes

Opt for paints with low sheen or matte finishes. These finishes are less likely to show imperfections caused by moisture.

Apply Thin Coats

Apply multiple thin coats of paint instead of one thick layer. Thin coats dry faster and reduce the chances of trapping moisture.

Avoid Direct Water Exposure

While painting, avoid using excessive water or exposing painted surfaces to direct water sources, as this can lead to moisture-related problems.

Consult Professionals

If condensation issues persist, consider consulting expert painters who can offer tailored advice for your specific situation.

How to Find the Right Professional

While you can embark on a rainy-day painting project alone, there are still moments when it’s better to have a professional painter do it instead. Look for the following:

Experience and Expertise

Look for painters with a proven track record in handling interior projects, especially during adverse weather conditions. Experienced painters can navigate challenges like humidity and moisture to ensure a flawless finish.

Proper Preparation

A skilled painter will understand the importance of thorough preparation, even on rainy days. They should take measures to protect your furniture, floors, and belongings from potential water damage.

Quality Materials

In damp conditions, using high-quality paint and primers becomes even more critical. Professional painters should recommend products that resist moisture and prevent paint from peeling or bubbling.


Adequate ventilation is critical to successful indoor painting during rainy days. Painters should ensure proper air circulation to help paint dry effectively and prevent mould growth.

Flexible Scheduling

Choose a painter who offers flexibility in scheduling. Rainy days can disrupt plans, so working with someone who can adjust timelines accordingly is essential.

Insurance and Licensing

Always verify that the painter is licensed and insured. This ensures protection for you and the painter in case of any accidents or damages during the project.


Open and transparent communication is crucial. Discuss your concerns about painting during rainy days and listen to the painter’s recommendations to address them effectively.

Portfolio and References

Review the painter’s portfolio of previous projects and ask for references. This will give you insights into their skills and professionalism from past clients.


Reputable painters typically offer warranties on their work. Inquire about their warranty policy to ensure you’re covered in case of any issues post-completion.

Weather Monitoring

A professional painter should keep an eye on the weather forecast. They should be willing to reschedule, if necessary, to ensure optimal painting conditions.

Frequently Asked Questions

How long does interior paint need to dry before rain?

Interior paint typically needs at least 2 to 4 hours to dry before rain to avoid potential water damage and uneven drying.

Does humidity affect painting indoors?

Yes, humidity can significantly impact indoor painting by slowing the drying process and potentially causing issues like poor adhesion and longer drying times.

Can I paint right after it rains?

It’s advisable to wait for the surfaces to dry completely after rain before painting to ensure proper adhesion and a smooth finish.

How can I dry my interior paint faster?

To accelerate interior paint drying, ensure proper ventilation, use fans or dehumidifiers, and opt for fast-drying paint products if appropriate for your project.


So back to the main question: Can you paint interior when it’s raining?

As you can see, the answer is yes!

That said, you need to set up the right conditions when painting your home on rainy days. By following the tips and insights listed above, you can make sure the final result is pristine.

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