🏡 When is the Best Time of Year to Paint Outdoors?

Exterior painting is essential to protect your home from the elements and keep it looking well-maintained. But did you know that the timing of your outdoor painting is just as important as the paint you use? Under poor weather conditions, paint may not adhere well, peel, or discolor.

In this blog, we explain when the best time is to paint outdoors, what to watch out for, and provide tips for planning your exterior painting project.

☀️ 1. The Ideal Period: April to October

The best months for outdoor painting in the Netherlands and Belgium are typically from April to October. During this period, the weather is usually mild enough to allow the paint to dry properly.

The perfect conditions are:

• Dry weather (at least 24 hours without rain)

• Outdoor temperature between 10 and 25°C

• Low humidity (under 85%)

• Little to no wind

💡 Too cold or too wet? Then the paint may not adhere properly, and issues like bubbling or discoloration may occur.

☁️ 2. Why Painting in Direct Sunlight Isn’t Ideal

Many people think a sunny day is perfect for outdoor painting. However, bright sunlight can also be problematic:

• The paint dries too quickly, which can cause streaks or visible brush marks

• There’s a risk of cracks in the paint layer

• The surface can get too hot, especially with dark colors

✅ Tip: Ideally, paint on the shaded side of the house and follow the sun (i.e., paint the west side in the morning and the east side in the afternoon).

🌦️ 3. Why You Should Avoid Rain and High Humidity

Rain or mist is detrimental to outdoor painting. Even if it seems dry, a damp surface can cause the paint to:

• Fail to adhere properly

• Peel off

• Dry slowly (increasing the risk of dust and dirt in the paint layer)

💡 Make sure the surface is dry for at least 24 hours before painting, and ensure no rain is expected for the following 12 hours.

🌡️ 4. What is the Minimum Temperature for Outdoor Painting?

Most exterior paints have a minimum application temperature of 10°C. This applies to both the air and the surface. If it’s colder, the drying process slows down and adhesion problems may occur.

• Below 5°C: Do not paint!

• Between 5-10°C: Only with special cold-weather paint (like from Sikkens or Sigma)

• Above 25°C: Be cautious of too rapid drying

✅ Professional painters always consider the temperature of the surface, which can differ from the air temperature.

📅 5. Planning: How to Choose the Right Time

Since the weather can be unpredictable, especially in spring and autumn, it’s smart to:

• Schedule a painter well in advance

• Check the weather forecast (preferably 3 dry days)

• Be flexible with the start date

💡 Did you know that professional painters like us at KL Montage plan painting projects wisely based on reliable weather data? This ensures the job is done right.

🔧 6. What Happens if You Paint at the Wrong Time?

Painting under poor weather conditions can lead to:

• Peeling paint

• Color differences

• Longer drying times or sticky paint

• No guarantee on DIY jobs

That’s why it’s always smarter to leave exterior painting to a professional who takes the right conditions into account.

🧑‍🎨 KL Montage – Your Outdoor Painting Specialist

At KL Montage, we know exactly when to paint your home for the best results. We combine expertise with smart planning and high-quality paints, ensuring your exterior walls, window frames, or shed will last for years to come.

✅ We provide:

• Correct timing and planning for your painting project

• Use of top brands like Sigma

• Crisp, durable finishes with a guarantee

• Free, personalized quotes

Get a free quote or advice

📞 Feel free to contact us — we’d be happy to help.

❓ Frequently Asked Questions

1. Can I paint outside in winter?Only with special winter paint and if it's dry and not too cold. In most cases, it’s not recommended.

2. What if it rains right after painting?The paint is likely to get damaged. That’s why good planning is crucial.

3. How often should you paint outside?On average, every 5–7 years. Sun, rain, and wind affect how quickly paint wears down.