Unity3D How To Change Skybox With Script

I wanted to change the skybox when a certain event happened. In my case, I wanted a new, random skybox each time a new enemy appeared to fight. First, I will show you how to change the skybox. Second, I will show you how to choose a random skybox and use it. Both scripts are stand alone so choose what works best for you.

To change the skybox using a C# script you have to store the skybox material reference in the Inspector and then assign it during runtime.

Assign a skybox material

using UnityEngine;
public class ChangeSkybox : MonoBehaviour {
    public Material skybox1;
    void Start() {
        RenderSettings.skybox = skybox1;
    }
}

To randomly select a skybox, attach the script below to a GameObject and populate the skyboxes array in the Inspector.

using UnityEngine;
public class ChangeSkybox : MonoBehaviour {
    public Material[] skyboxes;
    void Start() { ChangeMySkybox(); }
    void ChangeMySkybox() {
        int x = Random.Range(0, skyboxes.Length);
        RenderSettings.skybox = skyboxes[x];
    }
}

The random selection example adjusts the upper bound to ensure all configured skyboxes can be selected.

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