Snow Accumulation
by Itamio
Snow Accumulation makes snow layers build up on the ground in cold biomes during snowfall, so a winter world keeps its drifts instead of resetting to a single layer.
What it does
Under snow or rain weather in cold biomes, existing snow layers gain height over time, and the layer count stays within a configurable maximum, with 16 layers as the default. Snow accumulation follows Minecraft's own snow mechanics, so it works with natural snow blocks that generate in the world. Without the mod, a snowfall tends to leave only one layer on each block, which the author notes as the situation this mod changes.
The server sets the rules in its configuration: how far from players accumulation runs (8 chunks by default), how fast it proceeds (one step every 20 ticks, or one second, by default), and how many blocks per chunk and chunks per tick are processed, which can be tuned for performance. Changes can be reloaded in real time, though some settings need a restart or a game settings update.
The mod is server-side only, so players join without installing it. Files are published for Fabric and Forge, for 30 release versions 1.12.2 – 1.21.11, and the code is not open source. Both loader builds were last updated in March 2026.
Key features
Layer accumulation
Existing snow layers gain height during snow and rain weather in cold biomes, rather than staying at one layer.
Height limit
The maximum snow height is configurable and enforced with layer counting, with 16 layers as the default.
Chunk radius
Accumulation runs only within a set distance of players, with 8 chunks as the default radius.
Performance tuning
Blocks per chunk and chunks per tick can be adjusted to balance server load against accumulation speed.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
1.20.x6 of 6 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
1.16.x1 of 1 version with builds
1.12.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners and survival players who want snow to pile up over time in cold biomes, and who are willing to set the performance options for their server.
How it compares
Snow Accumulation is server-side only, with Fabric and Forge files for 1.12.2 – 1.21.11 and all rights reserved. Snowy is also server-side only and open source under the GNU Lesser General Public License v3.0 only, with builds for Fabric, Forge and NeoForge. StitchedSnow is server-side only and open source under the MIT License, but it targets Fabric and Quilt only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Snow Accumulation | Fabric and Forge | 1.12.2 – 1.21.11 | Server-side only | 2026-03-10 |
| Snowy | Fabric, Forge and NeoForge | 1.16.2 – 26.1.2 | Server-side only | 2026-04-22 |
| StitchedSnow | Fabric and Quilt | 1.16.4 – 1.21.10 | Server-side only | 2025-11-06 |
Questions
Does the server need Snow Accumulation installed?
Which loaders have files for Snow Accumulation?
Do configuration changes take effect without a restart?
In the catalog
Snow Accumulation is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Itamio
Similar mods
What the author says
Makes snowing in 1.12.2 more enjoyable, let snow accumulate, and cover the past. ##
Official listing
- Modrinth page
- modrinth.com/mod/snow-accumulation
- Owner
- Itamio
- Published
- 2025-06-15
- Updated on Modrinth
- 2026-03-10
- Facts verified
- 2026-10-15