Temperature

Temperature

Season System has a temperature in degrees Celsius. You can see it in the HUD, in the Season Journal and with /season temperature.

Season temperature

Every season has a temperature range:

Season	Coldest	Warmest
Spring	6 °C	18 °C
Summer	20 °C	34 °C
Autumn	5 °C	17 °C
Winter	-12 °C	2 °C

Within a season, the temperature follows a soft curve: it is closest to the "coldest" value at the start and end of the season and reaches the "warmest" value around the middle. Every day varies by up to 2 °C, rain and snow make it a bit colder, and weather events can make it much warmer or colder.

The ranges can be changed in the Configuration#temperature.

Felt temperature

The value in the HUD is the temperature of the season. What a player actually feels also depends on where they are and what they wear:

Situation	Change
Hot biome (desert, savanna, badlands)	+6 °C
Jungle or swamp	+2 °C
Taiga, mountains, peaks	-3 °C
Snowy, frozen or icy biome	-6 °C
Night	-2 °C (summer: -3 °C)
Rain or snowfall	-3 °C (winter: -2 °C)
Under a roof or underground	-1 °C (summer: -4 °C, shade cools you down)
Very high up (Y 110 and above)	-2 °C
Swimming	-5 °C (summer: -8 °C)
Fire, lava or a campfire close by	+14 °C
Lantern, glowstone, shroomlight, froglight and similar close by	+8 °C
Torch, candle, furnace, smoker close by	+5 °C
Leather armour	+2 °C per piece
Wool or fur armour (from other mods)	+3 °C per piece

"Close by" means about 4 blocks around you. Armour gives at most +10 °C.

Effects on players

When the felt temperature is too low or too high, players get effects:

Felt temperature	Effect
0 °C or colder	Slowness
-8 °C or colder	Slowness II and Mining Fatigue
33 °C or hotter	Weakness
39 °C or hotter	Weakness and Mining Fatigue

• Cold effects only happen in winter, heat effects only in summer. Both can be turned off separately.
• Staying warm in winter: standing near any heat source (torch, lantern, campfire, furnace, ...) always keeps you above the cold limit.
• Torch in hand: holding a torch (also soul torch or copper torch) in either hand in winter keeps you warm and gives you Speed I.
• Caves in summer: deep underground you never get heat effects.
• Spectators are never affected.

All limits and the check interval can be changed in the Configuration#temperature. With temperature_effects_enabled=false players get no effects, and with temperature_system_enabled=false temperature has no gameplay effect at all.

Effect on crops

With temperature_affect_crop_growth turned on (default), the temperature also changes crop growth:

Temperature	Crop growth
-8 °C or colder	×0.45
0 °C or colder	×0.70
12 °C to 25 °C	×1.08
33 °C or hotter	×0.75
39 °C or hotter	×0.55
everything else	×1.00

See also Crops and Farming.