Windy Sandbox

Windy Sandbox

Windy Sandbox is a free interactive wind simulator that lets you paint real weather phenomena — storms, vortices, and typhoons — directly onto a live world map. Rather than offering weather as something you only observe, the tool lets you create it, placing a typhoon over a real region or spinning up a vortex where you want one and watching thousands of particles flow according to the pattern you painted. For anyone who wants to play with weather at the scale of a world map, that paint-your-own-storms premise is the core of the product.

The weather phenomena you can paint span a range of scales. A typhoon is the headline example — the Field section includes a demo typhoon for an instant example — but the brushes and tools also let you paint smaller storms and vortices, so you can build anything from a broad cyclonic system to a tight local swirl. Because the painting happens on a real map, the weather you create sits on actual geography, which gives a typhoon or a storm a sense of place and scale that an abstract simulation would lack. The particle field flows in real time, so each phenomenon you paint comes alive as a moving field of air rather than a fixed shape.

Windy Sandbox is free, made by an independent creator, and offered as a beta, with a support option and a Discord for the community. The toolset includes map style, brush, tools, particles, color, and field controls, plus save and load for the weather worlds you build, and standard interactive controls for painting, erasing, panning, and zooming. For anyone who wants to paint storms, vortices, and typhoons onto a live world map and watch thousands of particles flow in real time, Windy Sandbox is the free simulator that puts weather in your hands.