Yes, but it can be challenging if you don't know how that ceramic coating is going to perform under uncontrollable environments. Ceramic coating can be applied outside as long as the weather conditions are appropriate. However, it is generally recommended that ceramic coatings are applied indoors or in a controlled environment to ensure the best results.
The ideal conditions for applying ceramic coating are moderate temperatures (around 70-80°F or 21-27°C) with low humidity and no wind or precipitation. If the weather is too hot or cold, or if it's too humid or windy, the coating may not bond properly to the surface and could result in a poor finish or reduced durability.
If you must apply ceramic coating outside, you should choose a day when the weather is forecasted to be suitable and ensure that the surface, your coating is clean and dry. You should also take precautions to protect the coating from dust, dirt, and debris, which could affect the finish.
Keep in mind that applying ceramic coating can be a time-consuming and labor-intensive process, and it may not be comfortable or convenient to do it outside. You may also be more susceptible to distractions and interruptions that could affect the quality of the finish.
Good news, there are manufacturers that have created ceramic coatings of outdoor installations. This does not mean that you can install it on a hot or very cold day. You would still have to follow the manufacturer’s instructions on proper application. Pro detailers know when the correct time is to apply and level the ceramic coating based on the environment. We also know when we can increase or decrease the install section size.
If possible, it's best to have a professional detailer apply the ceramic coating indoors or in a controlled environment to ensure the best possible results and avoid any weather-related issues.