To put up outdoor Christmas lights, plan the run from a weatherproof power source, fix them with the right clips rather than drilling or nailing, and use only outdoor-rated sets. Work outward from the plug, switching on to test as you go, and keep every connection dry and off the ground. A safe outdoor installation goes up in an afternoon and lasts the whole season. The sections below cover the practical method, from planning and powering to fixing, weatherproofing and lighting every part of the house and garden with outdoor Christmas lights made to install outside.
Plan and power the installation
Start at the socket and work back. Find your nearest weatherproof outdoor supply, measure the distance from there to where the lights will go, and only then decide how much you need. For anything beyond a single set, choose connectable lights so you can feed several strings from one plug instead of trailing a tangle of extension leads across the garden. Connectable sets daisy-chain end to end from a single power lead, and you can mix styles such as icicle, string and silhouette on the same run as long as they belong to the same system.
Keep the electrics dry. A DRiBOX is a weatherproof box that houses the outdoor plug connections and keeps them out of the wet, and one sat at the socket end is the simplest way to protect the join between your supply and the lights.
How to put up outdoor Christmas lights, step by step
1. Plan the layout. Decide what goes where, then measure each run and add a little slack. Buy to the measurement so you are not stretching a set to reach or coiling metres of spare.
2. Power it safely. Run the lights from a weatherproof outdoor socket, or house the connection in a DRiBOX, ideally protected by an RCD. Keep the plug and any transformer off the ground.
3. Fix without drilling. Use gutter clips, brick clips and adhesive hooks to hold the lights in place. There is no need to drill holes or hammer in nails, which damage the house and the cable alike.
4. Work outward from the plug. Start at the power source and run the lights outward, clipping as you go and switching on every so often to check the whole run lights before you commit to the fixings.
5. Secure and tidy the cables. Clip cables down along their length so nothing sags, flaps in the wind or trips anyone on the path. Leave the connections accessible in case you need to add a set later.
Outdoor Christmas lights by area
Match the light to the surface and the effect you are after:
• Rooflines and eaves. Icicle lights hung from the guttering give the classic dripping effect. Fix them with gutter or ridge clips that hook over the lip, so the cable follows a clean line with no drilling.
• Outdoor trees and trunks. Wrap the trunk and main branches with connectable string or cluster lights. As a rule of thumb, allow around 100 LEDs for every 2 feet of tree height for even coverage, or 150 to 200 for a dense, sparkling look. The full range of outdoor tree lights includes a calculator to size it exactly.
• Pathways and borders. Stake lights pushed into the ground mark the edges of a path or drive and guide the way to the door after dark.
• Windows and doors. Frame a doorway or window with a string set, or stand a lit silhouette in view to finish the frontage.
• Shrubs and hedges. Net lights drape over a bush or hedge in one move and give even cover without the fiddly stringing that individual fairy lights need.
Fixing without damage
Choose the fixing to suit the surface and nothing gets drilled. Gutter clips hook over the eaves, brick clips grip a mortar line, and adhesive hooks hold on smooth render, cladding and window frames. Stakes and ground spikes carry the lights across borders and lawns. Support the cable at intervals rather than letting it hang under its own weight, and the whole run stays put through wind and rain and comes down cleanly in January.
Weatherproofing and safety
Outdoor lights live out in the weather, so a few checks keep everything safe. Use sets rated at least IP44 for general outdoor use, and IP65 for anything permanently exposed or left up all year. The IP rating tells you how well a light resists dust and water, so it is the number to check before you buy. Keep every connection off the ground and inside a weatherproof box, do not link more sets together than the maker allows, and run the supply through an RCD. None of this is onerous, and it is what separates a display that lasts the season from one that fails in the first downpour.
Running cost and timers
Modern LED sets are cheap to run, costing only a few pence over a whole season, so a generous display will not alarm your energy bill. A timer trims that further by switching the lights on at dusk and off overnight, so they are lit when they are seen and dark when they are not. For the actual figures, the guide to whether Christmas lights are expensive to run does the sums with a built-in calculator.
FAQ
How do I put up outdoor Christmas lights?
Plan the run from a weatherproof power source, fix the lights with gutter clips, brick clips or adhesive hooks rather than drilling, and use only outdoor-rated sets. Work outward from the plug, testing as you go, and keep every connection dry and off the ground.
How do I hang Christmas lights on a house without drilling?
Use clips and hooks matched to the surface. Gutter clips hook over the eaves, brick clips grip a mortar joint, and adhesive hooks hold on render, cladding and window frames. None of them need a drill or nails, and all come away cleanly afterwards.
Are outdoor Christmas lights safe in the rain?
Yes, provided they are outdoor-rated at IP44 or higher and the connections are kept dry. House the plugs in a weatherproof box such as a DRiBOX, keep them off wet ground, and choose IP65 sets for anything left up permanently.
How do I power outdoor Christmas lights?
Run them from a weatherproof outdoor socket, or extend from an indoor socket into a DRiBOX that houses the connection outside. Protect the circuit with an RCD and keep the plug and transformer raised off the ground.
Can I run several sets from one plug?
Yes. Connectable sets link end to end and run from a single power lead, up to the maximum the transformer or system allows. Keep every set on the run within the same connectable system and do not exceed the stated limit.
Put yours up this weekend
Outdoor Christmas lights are a straightforward job once you plan the installation from the plug outward, fix without drilling and keep the electrics dry. Measure your runs, pick outdoor-rated connectable sets, and you will have the house and garden glowing in an afternoon, ready to light up every evening through the season.
