What IP rating should I use outside?

If the LED lighting is to prevent water droplets from entering, IP65 is fine, the rain-proof one must reach IP67, and if it is used under water, it must reach IP68.
If you need something better protected, such as a swimming pool or outdoor parking lot, you should consider led tri-proof lights with a sealed enclosure rating of IP65. The first number 6 means that it is completely dust-tight, and 5 means it can resist low-pressure water jets from any direction.
Drive and Outdoor light may need to bear moist and be submerged in water from time to time. Its IP68 rating means that Tubular waterproof lights are dust-proof and prevent continuous and complete immersion in water, which also makes it an ideal choice for water functions.

Why choose LiteHome LED Tri-proof Light？
1. Adjustable: It can be adjusted at any angle you need.
2. Can be linkable: Parallel Connection, Straight-line connection(As shown below)
3. Installation ways: Suspension, Ceiling installation, or Wall-mounted installation.
4. Function: Microwave / Emergency / Dimmable available
5. 76,000h ( L70B10 / Ta 25℃) 5 years warranty
6. Match International Food Safety (IFS), BRC, and HACCP
7. 850℃ degree glow wire test available
8. Respirator design, IP66K/ IK09, Non-flicker, Up to 160lm/w, and Up to 70% energy saving.