Joybuy Insights

Buying outdoor string lights: what to look for in weatherproof garden lighting

The right outdoor string lights can add decorative lighting to a balcony, patio, garden, fence or event space. But product information can sound more reassuring than it proves to be in everyday use. It’s not just the number of LEDs or an eye-catching product image that matters: the key is the combination of IP rating, power supply, cable length and intended use.

Common pitfalls when buying outdoor string lights

1. “Waterproof” without a clear IP rating

The word “waterproof” is not necessarily a precise technical specification. Look for a clearly stated IP rating. IP65 string lights are generally protected against dust and water jets from different directions. However, this doesn’t mean every component can be left underwater for long periods.

For many solar products, the IP rating applies only to the string lights. The solar panel, battery box or connectors may have different specifications. So don’t place the panel in a dip where rainwater can collect.

2. Solar power in poor light conditions

Solar string lights need plenty of direct sunlight. Under a covered balcony, behind a wall or beneath a tree, the stated charging time may increase considerably. In winter and on cloudy days, how long the lights stay on also depends on how much energy they have actually stored.

The solar models featured here are listed as taking 6 to 8 hours of direct sunlight to charge and providing 8 to 14 hours of light. These figures depend on the weather, so don’t treat them as a guaranteed daily run time.

3. Length alone doesn’t tell you how the lights will look

Long string lights aren’t automatically right for every space. The distance between the LEDs, the number of bulbs and the colour of the light all matter. G40 string lights, with their larger globe bulbs, are a good choice for pergolas, patios or event spaces, for example. For delicate decorations on branches and railings, flexible solar copper wire string lights are often more practical.

Technical details to check

IP rating and installation location

When choosing outdoor LED string lights, check that the IP rating is clearly stated. IP65 is suitable for typical outdoor areas exposed to rain and splashes, but not for immersion in water. Protect connectors from standing water. For mains-powered products, also check that the power supply and plug are suitable for outdoor use.

Power supply and controls

Solar products run on a built-in rechargeable battery and don’t need an external socket. Automatic dusk activation is convenient, but you’ll need to switch the lights on before using them for the first time. With connectable string lights, check the maximum connection capacity and whether you can safely connect multiple sets.

Dimmable string lights give you more control over the lighting for patios, hospitality venues or events. For decorative models with changing effects, a timer and memory function can also be useful, so you don’t have to select your preferred setting again each day.

Light colour, number of LEDs and materials

Warm white light has a subtle effect and is often a good choice for seating areas, weddings and hospitality venues. Multi-colour string lights are better suited to birthdays, Christmas decorations or garden parties. Copper wire can be wrapped flexibly around branches, railings or decorative objects. ABS plastic is often used for housings and bulb holders.

Before you buy, check the actual length of each string. Sets vary, for example, from 8 metres with 80 LEDs to 12 metres with 120 LEDs, and 20 or 45 metres with G40 bulbs.

Our picks for different uses

Ideal for: Budget-conscious first-time buyers
VIVREAL 2PCS Solar Copper Wire String Lights – 8M (26 ft) 80 LEDs Multi-Color

VIVREAL 2PCS Solar Copper Wire String Lights – 8M (26 ft) 80 LEDs Multi-Color

Why it suits this profile: Two 8-metre strings, each with 80 LEDs, are ideal for smaller balconies, plants, windows or individual areas of the garden. Solar power means there’s no need for a socket.

How it avoids this pitfall

The stated IP65 rating and specific string length make planning easier. The solar panel should still be positioned in an open, sunny spot.

Key benefits and features

Solar-powered, with 8 lighting modes, a memory function and flexible copper wires.

Ideal for: Quality-focused buyers
Vivreal G40 Decorative String Lights – 45M (148 ft) 75 Shatterproof Bulbs

Vivreal G40 Decorative String Lights – 45M (148 ft) 75 Shatterproof Bulbs

Why it suits this profile: This 45-metre G40 string is designed for large patios, pergolas, cafés, gardens and event spaces.

How it avoids this pitfall

The IP65 rating, replaceable bulbs and shatterproof bulb covers provide clear information to help you plan for outdoor use.

Key benefits and features

45 metres long, with warm white light, dimmable bulbs, a connectable design and capacity for up to 500 bulbs according to the product information.

Ideal for: Specific uses and frequent use
VIVREAL 2PCS Solar Copper Wire String Lights – 12M (39.4 ft) 120 LEDs Multi-Color

VIVREAL 2PCS Solar Copper Wire String Lights – 12M (39.4 ft) 120 LEDs Multi-Color

Why it suits this profile: The longer 12-metre strings, each with 120 LEDs, are well suited to larger trees, fences, balconies, weddings or colourful outdoor Christmas decorations.

How it avoids this pitfall

The product information clearly states the length, number of LEDs, IP65 rating and weather-dependent run time. This helps you plan based on more than just promotional images.

Key benefits and features

12 metres per string, 120 LEDs, eight modes with a memory function and multi-colour lighting.

Ideal for: Budget-conscious first-time buyers
Vivreal G40 Decorative String Lights – 20M (66 ft) 23 Shatterproof Bulbs

Vivreal G40 Decorative String Lights – 20M (66 ft) 23 Shatterproof Bulbs

Why it suits this profile: The 20-metre version combines decorative G40 bulbs with a manageable length for balconies, patios, gardens or smaller celebrations.

How it avoids this pitfall

The string is listed as IP65 rated, with replaceable bulbs and the option to extend it. Keep the connectors protected from standing water.

Key benefits and features

20 metres long, with 23 warm white G40 LED bulbs, dimmable brightness and an extendable design.

Looking for more options?

We’ve put together a complete, regularly updated list of products that meet these strict selection criteria and fully comply with the safety regulations in force in the EU.

Care and safe use

  • Clean the solar panel regularly with a soft, dry cloth.
  • Don’t immerse the battery box or clean it with harsh cleaning products.
  • For mains-powered strings, protect the connectors from puddles and prolonged exposure to rain.
  • Keep string lights away from naked flames and easily flammable materials.
  • Switch products off when not in use for long periods and store them according to the manufacturer’s instructions.
  • For weddings, parties and hospitality spaces, plan the cable route to avoid trip hazards.

Frequently asked questions about outdoor string lights

How much electricity do outdoor LED string lights use?

Consumption depends on the number of LEDs, their power rating and how long they’re switched on. Solar string lights get their energy from the solar panel and don’t use mains electricity while they’re on. For plug-in models, compare the wattage with the expected daily usage.

Can IP65 string lights be left out in the rain?

The string lights themselves are protected against dust and water jets when rated IP65. This doesn’t automatically apply to the solar panel, battery housing or connection points. Don’t leave them submerged or in places where rainwater can collect.

How long do outdoor string lights last?

Their lifespan depends on factors including the battery, LEDs, weather, installation and storage. Replaceable bulbs can make it easier to keep using certain G40 models. For solar products, care for the battery according to the manufacturer’s instructions and check it if performance starts to decline.