If you run a candle making business or just love creating candle a hobby then you will know that a change in season brings a unique set of challenges. As the warm summer days give way to crisp autumn and winter nights, your production environment can change drastically.

Temperature fluctuations can severely impact how your wax behaves. If you do not adjust your methods, you might be disappointed with the end result.. In this post, we will explore exactly how cooler nights affect your candle making and what you can do to maintain your high quality standards.

The Science of Cold Wax

Wax is highly sensitive to its environment. When the temperature drops in your workspace, the ambient air cools your containers and the surface of your poured candles much faster than usual. This rapid cooling alters the crystal structure of the wax, particularly if you use natural options like soy wax. Understanding these thermal changes is a good way to minimise the defects when candle making.

Common Cold Weather Candle Issues

Cooler temperatures usually lead to three main problems in candle making. By identifying these issues early, you can take steps to prevent them from happening in future batches.

Wet Spots on Glass Jars

Wet spots are a frequent complaint during the winter months. They look like patches of air trapped between the wax and the glass container. They occur when the wax cools too quickly and pulls away from the glass.

When your room gets cold at night, the glass jars shrink slightly, and the wax contracts at a different rate. This separation creates an illusion of a wet patch. While this does not affect how the candle burns, it does compromise the aesthetic appeal of your product.

Frosting on Natural Waxes

If you use soy wax, you are likely familiar with frosting. Frosting appears as small white crystals on the top or sides of your candle. It is a natural characteristic of soy wax, but sudden drops in temperature will make the problem much worse.

When the wax cools too rapidly in a cold room, the molecules crystallise unevenly. This creates a chalky appearance that can ruin the look of highly coloured candles.

Uneven Surfaces and Sinkholes

A smooth top is the hallmark of a high quality candle. However, cold air can cause the surface of your candle to set while the wax underneath remains liquid. As the liquid wax eventually cools and contracts, it pulls the set surface downward. This process creates ugly sinkholes or rough, uneven tops.

How Cooler Weather Alters the Curing Process

Curing is the period where your wax and fragrance oil bind together. This process is essential for achieving a strong scent throw. During the warmer months, curing happens relatively steadily. However, a cold environment can slow down this chemical binding process. If your storage room is too cold, the fragrance oil might not integrate fully with the wax. Your customers might then find that their candles do not smell as strong as they should.

You must ensure your candles cure in a space with a stable, moderate temperature. Consistency is key to producing a reliable scent.

Tips to Adapt to Seasonal Changes

Making a few simple adjustments to your routine, means you can continue to produce perfect candles all year round.

Your Containers

Pouring hot wax into a freezing cold glass jar is a recipe for disaster. The drastic temperature difference will almost certainly cause wet spots and poor adhesion.

• Place your jars in a warm room before you begin pouring. They need to get up to a good ambient temperature.
• Ideally store your empty jars in an insulated cupboard rather than on a cold concrete floor.

Adjust Your Pouring Temperature

You might need to experiment with your pouring temperatures when the seasons change.

• Try pouring your wax a few degrees warmer than you would in the summer.
• A slightly warmer pour can help the wax adhere better to the warm glass.
• Always take detailed notes so you can replicate your success in future batches.

Control Your Cooling Environment

The way your candles cool is just as important as how you make them. You want them to cool as slowly and evenly as possible.

• Keep your pouring room at a consistent temperature of around 20 to 22 degrees Celsius.
• Do not place cooling candles near drafts, open windows, or cold external walls.
• Space your candles about an inch apart so they do not share residual heat unevenly.
• Consider placing a cardboard box over your finished candles to trap the heat and slow down the cooling process.

Keep Your Production Running Smoothly

Seasonal changes do not have to disrupt your business. By understanding how the cold affects your wax, you can easily adjust your methods. Happy Candle Making!