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Outdoor string lights can add decorative lighting to paths, balconies, pergolas and seating areas. But there’s more to consider than just the colour and style of the lights. Unclear IP ratings, a cable that’s too short or an unsuitable power supply can all lead to the wrong purchase.
This guide explains which technical details matter when choosing LED string lights for outdoors, and which type may suit different situations.
The term waterproof string lights isn’t used consistently by retailers. The stated IP rating is more informative. Products with an IP65 rating are generally protected against dust and water jets from different directions. However, this doesn’t mean the string lights or solar panel can be fully submerged in water.
Keep the following points in mind:
String lights for balconies and patios are often draped around railings, branches or a pergola. So the total product length won’t necessarily match the distance that’s actually lit. Also allow for:
An 8-metre solar string light may be enough for a small balcony. A longer patio, garden fence or event space will often need several strings or a 20- to 45-metre version.
Warm white string lights tend to create a subtle ambience, making them a good choice for seating areas, hospitality settings or parties. Cool white light can highlight outlines more clearly and is often chosen for modern decorations. Multicoloured string lights are better suited to parties, seasonal displays or children’s birthday celebrations.
The power source matters too. Solar lights need plenty of direct sunlight. In the shade, during overcast weather or in winter, they may take longer to charge and stay lit for less time.
For garden string lights or patio string lights, look for a clear IP rating. IP65 is suitable for many decorative outdoor spaces, provided the connections are installed in a protected position. The rating doesn’t replace safe installation. Secure the lights so they aren’t under tension or creating a trip hazard.
Don’t just compare the length in metres; check the number of LEDs or bulbs too. Copper wire string lights often have LEDs spaced closer together, and the wire can be shaped around plants, railings or decorative objects. G40 models, on the other hand, have larger, more visible bulbs and are well suited to pergolas, event spaces, cafés and larger patios.
Also check whether:
For solar string lights, position the solar panel where it will receive as many hours of direct sunlight as possible. The solar models featured here specify a charging time of around 6 to 8 hours in direct sunlight and a run time of around 8 to 14 hours. Actual run time depends on factors such as the weather, time of year, shade and battery condition.
For mains-powered models, plan for the cable length, the position of the socket and protection for the connectors. An outdoor socket with a suitable residual current device may be important for safe use. If you’re unsure, have the electrical installation checked by a suitably qualified person.
Why this product suits this need: Two 8-metre solar copper wire string lights are ideal for smaller balconies, plants, windows or individual areas of the garden. They run without an external power supply.
The stated length, number of LEDs and IP65 rating make it easier to assess the product before you buy. Solar power also reduces reliance on an outdoor socket.
80 LEDs per string, eight lighting modes, a memory function and a stated run time of 8 to 14 hours, depending on the weather.
Why this product suits this need: These G40 string lights combine prominent bulbs with a 20-metre length, making them suitable for patios, pergolas, balconies and decorative events.
Details such as the 23 bulbs, IP65 rating and replaceable bulbs give you a clearer basis for comparison than a vague claim about weather resistance.
Dimmable, connectable to a total of up to 500 bulbs according to the product details, and fitted with shatter-resistant LED bulbs.
Why this product suits this need: With a 45-metre length and 75 G40 LED bulbs, this string is designed for larger gardens, cafés, weddings, parties and longer patio areas.
The longer length means you’ll need fewer short strings. The IP65 rating and guidance on protected connections can also help when planning your outdoor setup.
45 metres in total, warm white light, replaceable bulbs and the option to connect strings for up to 500 bulbs in total, according to the product details.
Why this product suits this need: The multicoloured version is ideal for outdoor Christmas lights, birthdays, garden parties and changing up your balcony or patio decorations.
Eight clearly named modes and a memory function mean you won’t have to select your preferred setting again every time you use the lights.
Solar-powered, rated IP65, with 80 LEDs per string and automatic on/off switching depending on the ambient light.
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.
Position the solar panel somewhere it will receive as much direct sunlight as possible. Trees, walls and canopies can reduce its charging efficiency. Switch on the power button before using the lights for the first time, and occasionally clean the panel with a soft, dry cloth.
Their lifespan depends on the LED components, battery, weather, storage and how long they’re used for. The battery in solar models may lose capacity over time. If you won’t be using the lights for a while, store them in a dry place and follow the manufacturer’s instructions. Don’t continue using lights with damaged cables, casings or connectors.
Solar string lights don’t use mains electricity while lit, but they do rely on sufficient sunlight. For mains-powered LED models, energy use depends on the wattage, number of LEDs, daily run time and whether you use a timer or dimmer. Before buying, check the wattage in the product specifications, if it’s listed.