Probably because you are more aware that you are gripping that side compared to clutch.
Quite common for the right OEM grip to be warmer - the plastic throttle tube under the grip acts as an insulator , which the other side does not have.
My theory is that the rotating RH grip is thinner than the fixed LH grip so the heat comes through more
four very plausible, subjective theories. Here is mine. I’m left handed and find the left one to be hotter: greater sensory perception in the dominant hand?The left hand side gets more air cooling as you use the clutch, high beam, indicators you tend to just grip the right hand so it retains the heat, as well as already stated the throttle side is insulated.
Terry
Maybe because of your tantric masturbation habits you have a stronger grip on the right hand ?
Quite common for the right OEM grip to be warmer - the plastic throttle tube under the grip acts as an insulator , which the other side does not have.