* Human comfort: It's significantly hotter than a comfortable room temperature (around 20-25°C). At 40°C, most people would feel very hot and uncomfortable.
* Weather: 40°C is a typical temperature in hot climates during the summer. It's considered a heatwave in many places.
* Water: Water boils at 100°C, so 40°C is still quite a bit below boiling. It's warm enough for a hot bath or shower.
To give you a better idea:
* Fahrenheit: 40°C is equivalent to 104°F.
* Kelvin: 40°C is equivalent to 313.15 K.
Let me know if you have any more questions about Celsius or other temperature scales!
