Can You Leave Outdoor String Lights Out in Winter Safely

Yes, you can leave outdoor string lights out in winter—if they’re rated for cold weather and properly installed. Look for lights with a low-temperature rating and durable, weatherproof construction to prevent damage from snow, ice, and freezing temperatures. Always inspect for frayed wires and use waterproof connectors to ensure safety and longevity.

Key Takeaways

• Check the rating: Ensure lights are rated for outdoor and winter use.
• Inspect regularly: Look for damage or fraying before and during winter.
• Use LED lights: They handle cold better and reduce fire risk.
• Secure properly: Prevent wind damage with strong hooks and tight spacing.
• Unplug during storms: Avoid electrical hazards in heavy snow or ice.
• Store if unsure: When in doubt, take them down to be safe.

Can You Leave Outdoor String Lights Out in Winter Safely?

Imagine this: it’s the first snowfall of the season. Your yard is blanketed in white, the air is crisp, and you’re sipping hot cocoa while admiring your outdoor string lights glowing softly above the patio. It feels magical—but then a thought hits: *Should I have taken them down already?* If you’ve ever wondered whether your beloved outdoor string lights can survive winter, you’re not alone. Many of us want to keep that cozy, festive ambiance year-round, but winter brings unique challenges—snow, ice, freezing temperatures, and unpredictable weather.

The short answer? Yes, you can leave outdoor string lights out in winter, but it depends on several factors: the quality of the lights, how they’re installed, your local climate, and how much maintenance you’re willing to do. In this guide, we’ll walk through everything you need to know to keep your lights shining safely—and avoid costly replacements or safety hazards. Whether you’re a holiday lighting enthusiast, a backyard entertainer, or just someone who loves a well-lit porch, this is your go-to resource for winter-proofing your outdoor lights.

1. Understanding Winter Risks for Outdoor String Lights

Before you decide to leave your string lights up all winter, it’s important to understand what winter throws at them. It’s not just about cold—it’s a mix of moisture, temperature swings, and physical stress that can shorten the life of your lights or create safety risks.

Moisture and Ice Buildup

One of the biggest enemies of outdoor lights in winter is moisture. Snow, sleet, and freezing rain can seep into poorly sealed connections, sockets, and wiring. When water freezes, it expands—this can crack plastic housings, loosen wires, or cause short circuits. For example, I once had a string of lights that worked perfectly in fall but flickered and died after a heavy ice storm. The culprit? A small crack in the socket where water had frozen and expanded, damaging the internal connections.

Temperature Extremes and Material Stress

Outdoor lights are built to handle some cold, but repeated freeze-thaw cycles can stress materials. Plastic sockets may become brittle and crack. Rubber insulation can harden and lose flexibility, increasing the risk of exposed wires. Even metal hooks and clips can corrode faster when constantly exposed to snowmelt and road salt (common near driveways and sidewalks).

Wind and Physical Damage

Winter storms often bring high winds. Lights strung loosely or not anchored properly can whip around, pulling on connections, damaging sockets, or even breaking bulbs. A friend of mine lost an entire string of lights when a gust snapped the wire where it was tied to a tree branch. The lesson? Secure your lights properly and avoid over-tensioning.

UV Exposure in Winter

It’s easy to forget, but winter sun still emits UV rays—especially on clear, snowy days when reflection off the ground increases exposure. Over time, UV can degrade plastic and rubber parts, making them more prone to cracking in cold weather.

Tip: If you live in an area with frequent ice storms, heavy snowfall, or coastal salt spray, your lights will face tougher conditions. Be extra cautious with installation and maintenance.

2. Are Your String Lights Truly Winter-Ready?

Not all outdoor string lights are created equal. Some are built for year-round use, while others are designed for seasonal display. The key is knowing what you’re working with.

Check the Rating and Certification

Look for the IP (Ingress Protection) rating on the packaging or product description. This tells you how well the lights resist dust and water. For winter use, aim for IP44 or higher. Here’s what those numbers mean:

• IP44: Protected against solid objects over 1mm (like wires) and splashing water from any direction.
• IP65: Dust-tight and protected against low-pressure water jets—ideal for harsh winter conditions.
• IP67: Can survive temporary immersion in water—great for areas with flooding or heavy snowmelt.

Also, ensure your lights are UL-listed or ETL-certified. These safety certifications mean the product has been tested for electrical safety, including performance in cold weather.

LED vs. Incandescent: The Winter Winner

If you’re still using incandescent outdoor lights, it’s time to upgrade. LEDs are far better for winter because:

• They generate less heat, reducing the risk of melting snow or ice buildup.
• They’re more energy-efficient and last longer (up to 25,000–50,000 hours).
• They’re less prone to damage from cold—LEDs actually perform better in low temperatures.
• They’re more durable; many LED strings have shatter-resistant bulbs and thicker insulation.

I switched to LED string lights three winters ago and haven’t had a single failure. My old incandescents would burn out bulbs every time the temperature dipped below 20°F.

Look for Weather-Resistant Features

High-quality winter-ready lights often include:

• Double-insulated wiring
• Sealed sockets and connectors
• Flexible, cold-weather-rated cords (look for “cold-resistant” or “sub-zero” labels)
• Sturdy mounting clips or hooks

Example: The Brightown Outdoor LED String Lights (IP65-rated, 50,000-hour lifespan) are a favorite among winter users because of their sealed sockets and thick, tangle-free cord.

3. Smart Installation: How to Hang Lights for Winter Survival

Even the best lights can fail if installed poorly. Winter demands a more thoughtful approach to hanging your lights.

Use the Right Mounting Hardware

Never use nails, staples, or zip ties that can damage the wire. Instead:

• Use outdoor-rated hooks, clips, or adhesive mounts designed for lights.
• For wood surfaces, use eye hooks or gutter clips.
• For brick or concrete, use masonry anchors with plastic sleeves.

Pro tip: Install clips every 12–18 inches to prevent sagging and reduce stress on the wire.

Plan Your Path to Avoid Water Traps

Don’t let wires run across flat surfaces where water can pool. Instead:

• Run lights along rooflines, eaves, or railings where snow and ice can slide off.
• Angle wires downward from the power source to prevent water from traveling along the cord.
• Avoid draping lights over bushes or low-hanging branches where snow can accumulate.

Secure the Power Source and Connections

The weakest link in any outdoor setup is often the plug and extension cord. To keep it safe:

• Use a weatherproof outlet cover (also called a bubble cover) to shield the connection.
• Keep the plug elevated—never let it sit on the ground or in snow.
• Use an outdoor-rated GFCI outlet to prevent shocks and tripping during wet conditions.
• If using an extension cord, choose one rated for outdoor and cold weather use.

Test Before Winter Sets In

Turn on your lights and walk the entire length. Check for:

• Flickering or dim bulbs
• Loose sockets
• Damaged or frayed wires
• Water inside sockets (look for fogging or condensation)

Replace any faulty lights before the snow flies. It’s much easier to fix a problem on a dry, mild day than in freezing rain.

4. Maintenance Tips to Keep Lights Shining All Winter

Leaving lights up all winter isn’t a “set it and forget it” situation. A little maintenance goes a long way.

Inspect Weekly (or After Major Storms)

Take 10 minutes each week to:

• Check for broken bulbs or damaged sockets.
• Look for ice buildup—gently knock it off with a soft brush or broom.
• Ensure the plug and outlet cover are still sealed and dry.

After a snowstorm, I use a small paintbrush to gently remove snow from sockets. Never use sharp tools—they can damage the wiring.

Keep Connections Dry

Moisture is the #1 killer of outdoor lights. If you notice condensation inside a socket, turn the lights off, dry them with a hair dryer (on low heat), and seal the connection with dielectric grease or a silicone sealant.

Trim Snow and Ice Gently

Never pull or yank on the wires. Use a broom or soft brush to clear snow. For ice, let it melt naturally or use warm (not hot) water to loosen it. Avoid salt or de-icers near lights—they can corrode metal parts.

Use Timers or Smart Plugs

Running lights 24/7 in winter is unnecessary and increases wear. Use a timer or smart plug to turn them on at dusk and off after a few hours. This saves energy and reduces the risk of overheating or electrical issues.

Store Spare Parts

Keep extra bulbs, fuses, and a spare string on hand. If one light fails, you can quickly replace it instead of leaving a gap in your display.

5. When It’s Safer to Take Them Down

Despite your best efforts, some situations call for taking lights down. It’s not defeat—it’s smart protection.

Extreme Climate Zones

If you live in an area with:

• Prolonged temperatures below -10°F (-23°C)
• Frequent blizzards or ice storms
• High winds (over 50 mph)

…your lights are at higher risk. Consider using them only during the holiday season and storing them in a dry, temperature-controlled space for the rest of winter.

Cheap or Old Lights

Budget lights or models older than 3–5 years may not hold up to winter stress. If your lights have:

• Thin, brittle cords
• Plastic sockets that crack easily
• No IP rating or safety certification

…it’s better to take them down. The cost of a new string is less than the risk of fire or electrical shock.

Near High-Traffic Areas

If lights are near walkways, driveways, or areas where snowplows or shovels are used, they’re more likely to be damaged. In these spots, use in-ground lights or low-voltage path lights instead.

When You’re Away for Long Periods

If you’re leaving town for a week or more during winter, it’s safer to unplug and store the lights. A storm could knock out power, leaving the lights on and unattended—increasing the risk of damage.

6. Data Table: Winter Survival Guide for Outdoor String Lights

Here’s a quick reference to help you decide whether to leave your lights up—and how to protect them if you do.

Factor	Safe to Leave Up?	Winter Protection Tips
Light Type	LED: Yes Incandescent: No (unless rated for cold)	Switch to LED; avoid incandescents in freezing temps
IP Rating	IP44 or higher: Yes Below IP44: No	Check packaging; upgrade if needed
Installation	Properly mounted: Yes Loosely hung: No	Use clips every 12–18″; avoid nails/staples
Climate	Mild winter (above 20°F): Yes Extreme cold/wind: Consider removal	Monitor forecasts; remove before major storms
Power Source	GFCI outlet + weatherproof cover: Yes Unprotected outlet: No	Install outlet cover; keep plug elevated
Maintenance	Weekly checks: Yes Neglected: No	Inspect after storms; clear snow gently

Final Thoughts: Winter Lights Can Work—If You Play It Smart

So, can you leave outdoor string lights out in winter safely? Yes—but only if you choose the right lights, install them thoughtfully, and maintain them regularly. It’s not about leaving them up and hoping for the best. It’s about respecting winter’s challenges and preparing for them.

Think of your lights like a winter coat: they need the right materials (weatherproofing), a good fit (secure installation), and regular care (maintenance). When you get it right, you’re rewarded with months of warm, inviting glow—perfect for sipping cocoa on a snowy evening, hosting a winter BBQ, or simply brightening a dark December night.

And remember: it’s okay to take them down if conditions are too harsh. There’s no shame in protecting your investment and staying safe. The goal isn’t to keep lights up at all costs—it’s to enjoy them, season after season, without stress or surprise repairs.

So go ahead. String up those lights. Test them. Protect them. And when the first snowflakes fall, step back, smile, and let your winter wonderland shine—safely and beautifully.

Frequently Asked Questions

Can you leave outdoor string lights out in winter without damaging them?

Yes, if the lights are rated for outdoor use and labeled as weatherproof (IP65 or higher). However, extreme cold and snow buildup can shorten their lifespan over time.

Will winter weather ruin my outdoor string lights?

Not necessarily—most modern outdoor string lights are designed to handle rain, snow, and freezing temperatures. But prolonged ice accumulation or subzero conditions may cause bulb failure or frayed wires.

Should I take down outdoor string lights in winter to be safe?

It’s not required, but removing them during harsh winter months can prevent potential damage. If left up, inspect connections and use protective covers to reduce moisture exposure.

Can LED string lights survive winter outdoors?

Yes, LED outdoor string lights are ideal for winter—they’re energy-efficient, generate less heat, and are more resistant to cold than incandescent bulbs. Just ensure the entire set is outdoor-rated.

Do outdoor string lights need to be covered during snowstorms?

While not mandatory, covering them with a waterproof sleeve or tarp during heavy snow can protect sockets and wiring. Avoid tight wraps that trap moisture.

What happens if I leave indoor string lights outside in winter?

Indoor lights lack weatherproofing and will likely fail when exposed to snow or ice. Always use fixtures specifically labeled for outdoor use to prevent electrical hazards.