system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why does the same temperature feel warmer outdoors than indoors?

During summers, 60° F feels ok while 70° F is warm when you are outside. However, 70° F is very comfortable indoors while 60° F is uncomfortably cold. Why does it matter if the temperature we are talking about is indoors or outdoors?
gpt
The sun provides (at peak) about 1300 Watts of heat per square meter of area.  So, even in the winter when the sun is lower (therefore the angle  of incidence is lower, and less heat will be absorbed) you could still be getting a few hundred Watts of heat just by being in the sun.  Quite honestly, 60 F (15C) and direct sun is usually uncomfortably warm for me.  Go stand in front of a 1000 W electric heater and see!  The amount of sunlight is often more important in determining comfort than the air temperature.