Fabric Seasons — an atmospheric mod for adding dynamic seasons in Minecraft

Fabric Seasons — an atmospheric mod for adding dynamic seasons in Minecraft

Fabric Seasons adds four full seasons to Minecraft — spring, summer, autumn, and winter. Each lasts 28 in-game days and affects biome temperature, precipitation, crop growth, and the appearance of nature. 

A biome in summer with green grass and leaves

How the season is determined

The current season is tied to world time. One full cycle lasts 112 in-game days — 28 for each of the four seasons.

The same biome in spring 

By default, seasonality only affects the Overworld. The Nether and the End are excluded from the mod's effects — the logic of the seasons is built around biome temperature and precipitation, which do not work in these dimensions.

Biome behavior

The mod groups all Overworld biomes into five categories based on base temperature. The category determines how the biome reacts to season changes.

Plains biomes get covered in snow in winter and return to green grass in spring. Deserts and savannas transition into a winter rainy season — this is the most noticeable change for a player used to constantly dry landscapes. In jungles and mangrove swamps, seasonal changes are minimal: the tropical category ignores most fluctuations.

The same biome in winter under a layer of snow

Crops and animals

Each crop has four separate growth rates, one for each season. The growth rate for each season is set via the mod's datapack. In spring and summer, plants grow the fastest, in autumn — slower, in winter — minimally.

This affects farm planning. Automated systems with pistons and observers continue working in any season, but the crop yield during the winter cycle will be significantly smaller. For players keeping large fields as a main food source, it makes sense to stock up during the summer months for winter.

By default, bone meal is independent of the season — the time of year only affects natural maturation, while manual acceleration works as in vanilla. You can enable seasonal influence on it in the config: then the chance to accelerate growth in winter will noticeably decrease.

Animals breed in any season by default. If the corresponding option is disabled, cows, pigs, chickens, and other livestock will stop accepting breeding food until spring.

The same plains biome in autumn with altered vegetation colors

Mod commands

To manage seasons, the mod adds a few utility commands. The command /season query shows the current season in the world, which is convenient for checking active effects and environmental changes. Via /season set <season> you can manually set the desired season without waiting for a natural cycle change, and /season skip instantly skips the world to the next season. These commands are especially useful when testing farms, checking seasonal mechanics, and building, when you need to quickly assess the look of a location or the performance of certain systems in different seasons.

Configuration

The seasons.json file is located in the config folder. After changing parameters, you need to restart the client or server. Below are the parameters most often changed in actual modpacks.

Besides the listed ones, the file contains biome lists (biomeDenylist, biomeForceSnowInWinterList), where you can add or remove specific biomes from seasonality, as well as a range of minor toggles, like whether snow covers vegetation and whether ice breaks sugar cane. For most players, these parameters don't need to be changed — the default values are tailored to vanilla behavior.

Conclusion

Fabric Seasons solves one specific task — it adds a realistic yearly cycle to the Minecraft Overworld without additions in the form of new blocks, items, or recipes. The mod works through a biome temperature shift and a layer of color maps on the client, thus integrating cleanly and not affecting vanilla progression. Suitable for survival servers that want to make a long game more rhythmic, and for single-player playthroughs aimed at realism. If changing seasons is not needed in a specific project, it's easy to lock one season in the config via isSeasonLocked: true — the mod will only use seasonal visual changes.