why do we feel hot when we sit under the sun directly Share with your friends Share 1 Jyoti Pant answered this The heat from the Sun flows as infrared radiation which is also a part of sunlight causes a sensation of warmth. 4 View Full Answer Ashik Paul answered this Because. Sun is made up heat that's why we feel hot under sitting direct sun -1 Smruti answered this we feel hot while sitting directly under the sun because the uv rays of the sun is directly falling on us -2 Rapunzel answered this BECAUSE THE SUN RAYS DIRECT COME ON US, AND WE FEEL HOT AND SWEATY. -1