As many DIY enthusiasts and homeowners know, the quest for the perfect paint job doesn't pause for the whims of weather. But when the skies turn grey and the temperature drops, questions arise about the feasibility and wisdom of painting indoors. This blog delves into the heart of this dilemma, addressing common concerns and providing expert advice on indoor painting during cold, rainy days.

We'll explore how temperature and humidity impact paint application and drying times, and offer practical tips to ensure your painting project is successful, regardless of the weather outside. Whether you're a seasoned painter or a first-time DIYer, our insights will help you navigate the challenges of painting in less-than-ideal conditions. So grab a cup of tea, settle in, and let's unravel the mysteries of indoor painting during those chilly, wet days!


What temperature is too cold to paint inside?

too cold to paint


When it comes to painting indoors, temperature plays a crucial role in determining the success of your project. While painting in a cool environment might seem comfortable, there is a threshold below which painting becomes ineffective and problematic. Generally, temperatures below 10°C are considered too cold for indoor painting.

At such low temperatures, the properties of paint are adversely affected. Latex and acrylic paints, which are water-based, can begin to thicken. This increased viscosity makes them harder to apply evenly, leading to streaks and an uneven finish. Furthermore, cold conditions significantly slow down the drying process. Paint that dries too slowly may not adhere properly to the surface, leading to long-term durability issues like cracking or peeling.

Oil-based paints also suffer in cold temperatures. They can become too thick to apply smoothly, and like their water-based counterparts, take much longer to dry. This extended drying time not only delays the completion of your project but can also attract dust and debris, compromising the final appearance.

Additionally, cold temperatures can affect the surfaces being painted. Cold walls, for example, can cause condensation when exposed to warmer air, leading to moisture on the surface that can interfere with paint adhesion.


Is it okay to paint when it's raining?



Painting while it's raining can be a contentious topic among home improvement enthusiasts. On one hand, painting indoors during a rainy day can be perfectly fine, as long as the conditions inside your home are controlled. On the other hand, painting outdoors in the rain is generally not advisable.

When it comes to indoor painting, the key factor to consider is humidity. Rainy weather often brings increased humidity, which can affect how paint dries. High humidity can slow down the drying process, leading to longer waiting times between coats and the potential for a less-than-ideal finish. However, if you can manage the indoor humidity with tools like dehumidifiers and ensure good ventilation, painting indoors on a rainy day is certainly feasible. In fact, the lack of direct sunlight and extreme temperatures can actually make for a more consistent drying process.

Outdoor painting during rain, however, is a different story. Rain can wash wet paint off the surface, leading to streaking and uneven coverage. It can also prevent proper adhesion to the surface, resulting in long-term durability issues. Even if the rain is light, the increased moisture in the air can cause similar problems as high humidity indoors.


What is the best weather to paint inside?

best weather to paint


The ideal weather for painting inside strikes a balance between temperature and humidity, conditions that remarkably influence the quality and ease of your painting project. Ideally, you want a day that's not too hot or too cold, with temperatures hovering comfortably between 18°C and 23°C. This moderate temperature range ensures that the paint flows smoothly, adheres properly, and dries evenly.

Equally important is low to moderate humidity. High humidity levels can be a painter's nemesis, prolonging drying times and increasing the likelihood of drips and streaks. On the other hand, very low humidity might cause the paint to dry too rapidly, leading to an uneven finish. A relative humidity level between 40% and 50% strikes the perfect balance, allowing the paint to set properly without delay or complication.

Moreover, a day with consistent weather is preferable. Fluctuations in temperature and humidity throughout the day can affect how paint dries, potentially leading to an uneven or flawed finish. A steady weather pattern ensures consistency in drying and curing, yielding the best results.


What happens if it rains and becomes humid after you paint?

When you've just given your home a fresh coat of paint, the last thing you want is a bout of unpredictable Aussie weather to spoil it. Understanding the impact of rain and humidity post-painting is crucial, especially in a country where weather conditions can vary dramatically.

Rain can be a real spoiler. If it pours shortly after you've painted, the water can wash away the paint, leading to streaks and uneven coverage. This is particularly true for exterior projects where the paint hasn’t had enough time to dry. In such cases, you might find yourself looking at a redo, which is not just frustrating but also adds to your expense.

Humidity plays a different but equally challenging role. High humidity slows down the drying process, as the moisture in the air prevents the paint from setting quickly. This can lead to a tacky finish or even mildew growth, especially in coastal or tropical regions of Australia where humidity tends to be higher.

To avoid these pitfalls, always check the weather forecast before starting your painting project. Aim for a dry spell with low humidity. And remember, patience is key – giving your paint ample time to dry before the heavens open up is always a wise decision


Top 5 tips for painting indoors when it’s raining outside

tips for painting indoors


Painting indoors while it's raining outside can be a bit tricky due to the increased humidity, but with the right approach, you can achieve great results. Here are the top 5 tips:

  1. Ensure adequate ventilation: even though it's raining outside, it's crucial to maintain good airflow in the room you're painting. Open any available windows or doors slightly to allow air circulation. Use fans to help circulate the air, but avoid pointing them directly at wet paint to prevent uneven drying.
  2. Control humidity: high humidity slows down paint drying. If possible, use a dehumidifier to reduce moisture in the air. This helps the paint to dry faster and more evenly, preventing issues like streaks or a tacky finish.
  3. Choose the right paint: opt for water-based or latex paints as they tend to handle humidity better than oil-based alternatives. They also dry faster, which is a bonus in damp conditions. Check the paint can for humidity and temperature guidelines to ensure optimal application conditions.
  4. Take your time between coats: humidity extends drying times. Be patient and allow extra time for the first coat to dry completely before applying a second coat. Rushing this process can lead to unsatisfactory results like smudging or uneven texture.
  5. Protect your work: keep windows and doors as closed as possible when it's actively raining to prevent water from getting in and affecting the freshly painted surfaces. Also, be mindful of tracking in moisture from outside – it can increase the room's humidity.

By following these tips, you can successfully complete your indoor painting project, rain or shine. Remember, the key is to adapt to the conditions and be patient with drying times.



Painting the interior of your home during cold and rainy weather is not only possible but can also be quite successful with the right approach. The key is to understand and mitigate the challenges posed by lower temperatures and higher humidity levels. By ensuring proper room temperature, ideally between 18°C and 23°C, and employing dehumidifiers or heaters to maintain optimal humidity, you can create a conducive environment for your paint to dry evenly and adhere properly.

Remember to be patient, as drying times will be longer in these conditions. Utilising high-quality paints suitable for lower temperatures and monitoring the room’s climate can make a significant difference in the outcome. It’s also crucial to maintain good ventilation to aid in drying and to keep the air quality safe, especially when using oil-based paints.

So, don’t let a gloomy, rainy day dampen your spirits or delay your painting plans. With these tips and considerations, you can transform your space, infusing new life and colour into your home, regardless of the weather outside. Painting indoors during the colder, rainy season can be a rewarding project, turning those dreary days into an opportunity for a cosy, creative indoor makeover.