its so great when the temperature is mild, the humidity is low, and the sun is not harsh. its a rare occurrence. today comes pretty close where i live 
i do like sunny but i burn easily and sunscreen is smelly, sticky, and wet. bright sunlight is uncomfortable as well, but for me the visual effects of light are the worst in the winter if it's reflecting off snow, although sandy beaches and urban areas with lots of windows, cars, and otherwise shiny materials come close. its also harder for me to process the sensation of being hot as opposed to being cold, even though both conditions are bothersome.