October 22, 2026
IP ratings explained: what IP44 actually means for outdoor lights
Quick answer: the first digit is protection against solid objects (dust), the second against water. IP44 means protected against objects over 1 mm and against splashing water — fine for rain on a patio, not for being submerged or left in standing water.
Reading the two digits
| Rating | Solids | Water | Real-world meaning |
|---|---|---|---|
| IP44 | Objects over 1 mm | Splashes from any direction | Covered patio, under an eave, sheltered wall |
| IP55 | Dust, limited ingress | Low-pressure jets | Exposed wall, garden where a hose is used nearby |
| IP65 | Dust-tight | Jets from any direction | Exposed outdoor positions, coastal gardens |
What the rating does not cover
- The plug and the adapter. A weatherproof strand usually ends in a plug that is not weatherproof. Keep it indoors, in a covered socket, or in an enclosure.
- Standing water. No domestic rating covers a connector sitting in a puddle.
- Age. Seals harden. A set that survived two winters may not survive the third — check cable and connectors at the start of each season.
Where the rating matters most
Low positions collect water: path lights, ground stakes, anything at the base of a wall. High positions — eaves, pergola beams, window heads — see rain but drain freely, so a lower rating is often enough.
Solar sets move the risk: there is no mains connection at ground level, so a stake light is the safest way to light a wet border. See solar outdoor lighting.
Matching rating to position
- Covered patio or porch: IP44 is enough.
- Open garden, exposed wall: aim for IP55 or better.
- Ground level, coastal or sprinkler-fed beds: IP65.
- Indoors only: the rating is irrelevant, but heat and cable length are not.
Setup guidance per product is on each page; installation basics are in the buying guide.