When summer rolls around in the U.S., especially from May to September, humidity levels rise. High moisture levels in the air can spell trouble for your wardrobe, particularly for leather. Mold or mildew thrives in humid areas. If you want your outerwear to last, preventing mold growth is key.

Here’s a simple, practical guide on how to prevent mold growth on jackets during humid seasons.

Why Jackets Are at Risk During Humid Months

Jackets made from organic materials like leather, wool, or cotton can absorb moisture from the air. When stored in a dark, closed space with little airflow, it creates the perfect breeding ground for mold and mildew.

If you’re in a high-humidity region such as Florida, Louisiana, or the coastal Northeast, the risk is even greater during the summer.

1. Store Only Clean and Dry Jackets

Before packing away your jackets for the season:

• Wash or dry clean them to remove oils, sweat, and dirt

• Air-dry thoroughly before storage (no damp cuffs or linings!)

Related searches: How to store leather and suede jackets during the off-season

2. Choose Breathable Storage Options

Avoid vacuum-sealed bags during humid months. Instead:

• Use cotton garment bags that allow airflow

• Leave a bit of space between items in the closet

• Avoid storing jackets in plastic bins unless they’re vented

3. Use Moisture Control Tools

Simple tools can keep humidity at bay inside your wardrobe:

• Silica gel packets – Great for absorbing excess moisture

• Charcoal bags – Natural and reusable option

• Moisture absorbers – Place them in corners or under hanging clothes

4. Make sure there is enough airflow in your closet.

Mold often forms when there is not enough air flowing within a room. Ensure your storage area has good ventilation.

• Try to keep your closet doors not fully shutting.

• Put a small fan or dehumidifier as close to the area as possible.

• Each jacket needs space for the air to circulate freely.

If the indoor humidity stays below 55%, it is perfect. An automatic dehumidifier is suggested for basement-level homes and those located in very humid states.

5. Prevent errors caused by water in your planting assets.

These tips should be avoided in times when the air is humid:

• Make it a habit to hang your jacket away from your body for a few minutes after putting it on, it might feel sweaty.

• Avoid placing clothes to dry in a room that lacks proper ventilation.

• Always try to avoid leaving your jackets near damp areas such as bathrooms or basements.

• You should not fold your jackets and keep them in stacks. When you hang your clothes, moisture and creases are less likely to form.

6. Select Mold-Resistant 

If the new year calls for new jackets, then visit Marco Enzolani for high-quality jackets; keep these points in mind:

• Synthetic materials usually dry out faster than cotton.

• A leather jacket with extra coating is more secure in areas with high humidity.