Complicated Explanation

This page is simply for those who are interested in understanding the technical side of temperatures and how it works.

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Temperature is calculated using various sources as listed below:

Core temperature:

The core temperature of a player is 0. Wearing armor can apply a modifier to either hot or cold:

Leather or chainmail armor will add a 0.5 modifier for each piece being worn. A full set of this will apply (4 * 0.5) to the core temperature, resulting in +2 (6+ would cause overheating)

Core temperature can also be modified if the player is underneath a block or exposed to the sky. Being under a block (considered as being in shelter) will normalize a players core temperature by 1, so if cold, the core temperature will increase by 1, if hot, it will decrease by 1.

If a player is on fire, they will also get an extreme core temperature modifier of +10 (but probably have more important things on their mind)

Ambient temperature:

Ambient temperature starts at 0 and can be modified by the players surroundings;

Biomes can provide a modifier based on time of day as outlined below, any not listed is 0:

Badlands (and variants) = +3 during day, +4 around noon, -1 at night
Beach = +1
Cold Ocean = -1 during day, -0.5 around noon, -2 at night
Deep Cold Ocean = -2.5 during day, -3 around noon, -3.5 at night
Deep Frozen Ocean = -2.5 during day, -3 around noon, -3.5 at night
Deep Lukewarm Ocean = -2.5 during day, -3 around noon, -3.5 at night
Deep Ocean = -2.5 during day, -3 around noon, -3.5 at night
Desert = +2 during day, +3 around noon, -1 at night
Desert Hills = +2
Desert Lakes = +2
Frozen Oceans = -2.5
Frozen Rivers = -2.5
Ice Spikes = -2.5 during day, -3 around noon, -3.5 at night
Jungle (and variants) = +1 during day, +1.5 around noon, +2.5 at night
Lukewarm Ocean = +1
Mountains (and variants) = -1
Nether = +4
River = -0.5
Snowy Beach = -3
Snowy Mountains = -3
Snowy Taiga = -3
Swamp = +1.5
Taiga (and variants) = -1
The End (and variants) = -4
The Void = -10
Warm Oceans = +1.5
Wooded Badlands = +1

Elevation can provide a modifier. Being too high can be cold, being too low can be too hot. Based on players Y location.

Nearby blocks - Looks at blocks in a 2 block radius around the player, each block in that radius can provide a modifier. Blocks with 1 block radius provides a more extreme modifier. Nearby block modifiers has an upper and lower limit of 10 and -10 respectively. Modifiers are cumulative. So being within 1 block of lava would be +2, but also being within 1 block of more lava would be +4

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