Most Philips Hue lightbulbs are designed for indoor use with the exception of the PAR38 outdoor bulb. However, all bulbs are tested under certain temperatures and humidity levels to ensure they work to our specifications.
We cannot guarantee that non-Philips Hue outdoor fixtures are suitable for Hue bulbs. Most Philips Hue outdoor fixtures feature integrated LEDs. Some, such as the Lucca, come with a Hue White bulb; if you must replace the bulb within these fixtures, only use the same Hue bulb with which it came.