Can You Store Items in a Garage Over Summer?

At the end of every school year, the same question comes up: what do I actually do with all of this stuff?

The garage seems like the obvious answer. It’s free, it’s there, and it’s big enough to hold a semester’s worth of accumulated life. But the garage that stores holiday decorations just fine in November is a different beast in July, and not everything survives the difference.

Why Summer Garages Are Harder on Belongings Than You Think

Most attached garages reach 120–150°F on a hot summer day. That’s what happens when an uninsulated space absorbs direct heat with limited ventilation.

Humidity compounds the problem. In humid climates, moisture levels fluctuate with the temperature, creating conditions that warp wood, rust metal, grow mold on fabric, and cause electronics to corrode from the inside out.

This doesn’t mean garages are useless for storage. It means you need to understand the things that tolerate those conditions and those that don’t.

What’s Safe to Store in a Garage Over Summer

The rule of thumb is simple: if it’s durable, non-porous, and you wouldn’t mind if it got warm, it’s probably fine. Here’s a quick checklist to note about things that are safe to store in a garage over summer.

Generally Safe

• Sports equipment (bikes, helmets, cleats, exercise gear)
• Metal tools and hardware
• Plastic storage bins and containers
• Outdoor gear (camping equipment, umbrellas, folding chairs)
• Seasonal clothing (in sealed bins)
• Cleaning supplies and non-aerosol household products
• Holiday decor (as long as it’s not wax-based)

These items tolerate heat and humidity reasonably well. Just keep them off the floor, sealed where possible, and away from any direct sunlight through windows or doors.

What You Should Never Store in a Garage Over Summer

This list is longer than most students expect, and getting it wrong is expensive. If you’re using your garage for summer storage, it’s critical to know what not to keep there

Generally Unsafe

• Electronics
• Wooden Furniture
• Photos, Documents, and Books
• Vinyl Records and CDs
• Candles and Wax Items
• Aerosol Cans and Certain Chemicals
• Mattresses and Upholstered Furniture

Heat damage, humidity exposure, and poor airflow can lead to warping, mold, battery failure, and permanent degradation. Choosing the right storage space can save you from costly replacements later.

How to Set Up Garage Storage the Right Way

If you’ve confirmed your items are garage-safe, a little prep work makes a meaningful difference.

Use sealed plastic bins, not cardboard boxes. Cardboard absorbs moisture and provides no protection against pests. Next, make sure you keep everything off the floor. Moisture wicks up from concrete floors, especially during rain and humidity spikes.

Also make sure to leave space for air circulation; don’t pack the garage wall to wall. And although it might go without saying, label everything. Summer storage items have a way of disappearing into unmarked bins. Label the outside of every container with the contents and your name. Future you will appreciate it.

When a Climate-Controlled Unit Makes More Sense

If you have electronics, furniture, or anything sentimental, a climate-controlled storage unit is worth pricing out before defaulting to the garage.

Standard units run $50–$100/month. Climate-controlled units typically cost $80–$150/month depending on size and location. For a standard 5x10 unit, you’re looking at $150–$300 for the summer.

It might not be a trivial amount, but it’s also not much compared to the cost of replacing a laptop or a damaged piece of furniture.

The Bottom Line for your Summer Storage

A garage is a perfectly reasonable place to store the right things over the summer. The mistake most students make is storing everything and hoping for the best.

Luckily, Storage Scholars offers moving out support and summer storage designed specifically for students, with campus pickup and delivery built in, so you’re not renting a truck or figuring out the logistics yourself. Select your campus location and have Storage Scholars handle all your heavy lifting today.