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Realtime Sky Builder in the Unreal Editor

Realtime Sky Builder

Dynamic sky, clouds and weather for Unreal Engine

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Build a believable sky in minutes, then direct it shot by shot. Realtime Sky Builder is a Blueprint sky and weather system for architectural visualisation, cinematics and previs in Unreal Engine.

Pick a quick look as a starting point and change anything. Every look stays fully editable, with exact numeric values next to each slider.

What you get

  • Sky rig and linked weather rig, built in native Blueprint.
  • Studio: a dockable editor for lighting, clouds, weather, time and quality.
  • Clouds: coverage, density, size, altitude, thickness and tracing distance.
  • Sun and moon placed independently, with moon phase and disc brightness, or geographic date and time for the sun.
  • Sequencer: key the exposed artist properties, and use absolute cloud time so cloud movement is repeatable.
  • Weather: Niagara rain and snow in camera-following, fixed or target-actor volumes.
  • Surfaces: opt-in material functions add wetness, puddles, raindrops and snow to your own materials.
  • Saved looks: save, recall and override an appearance without moving your actors.
  • A demonstration map and an illustrated tutorial.

Good to know

  • Unreal Engine 5.8, Windows. Delivered as a complete project.
  • Requires the Niagara and EditorScriptingUtilities plugins, both included with the engine.
  • Snow-depth WPO offsets existing mesh vertices. It does not add geometry or change collision.
  • The mountains, rocks and character shown in the media are not included.

FAQ

Can I set the sun for a real date and time?

Yes. Use the geographic date and time controls to place the sun, then adjust anything else by hand.

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