How to say "temperature" in Japanese

• 温度おんどJLPT N3approx.Common
  nounThe word for temperature as a measurable degree of heat or cold — of air, water, rooms, objects, or the body. Use it for temperatures read in degrees, not for the fever of an illness.
  物質ぶっしつは温度おんどによって形かたちを変かえる。↗

  Matter changes its form according to temperature.
• 熱ねつJLPT N4approx.Common
  nounCovers the fever sense: the raised body temperature of someone who is ill, as in 'running a temperature'. It is not the word for the temperature of air, water, or objects — that is 温度.
  １０２゜Ｆの熱ねつがあります。↗

  I have a fever of 102 degrees.

Use 温度 for temperature as a measurable degree of heat or cold — of air, water, objects, or the body — and 熱 for the fever sense, when someone is ill and running a temperature.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 温度おんどtemperature
• 熱度ねつどdegree of heat
• 気温きおん(air) temperature
• 寒暖かんだんcold and heat
• 熱ねつfever