It is 12.9 degrees here in the shade. It will be warmer in the direct sunshine but there is a breeze blowing so it will not be THAT warm.
I think the time of day, how you slept the night before, what you have eaten, whether you have exercised that day*** etc. make a huge difference to how you feel at a given temperature.
I have just eaten a hot meal and am drinking a big mug of tea. I feel fine at the moment and it is only 13.5 degrees in this room. If I'd had a cold drink and was eating ice cream, I wouldn't!
*** I got home late after a 200 km audax ride one November. I had been fine while cycling in the chilly conditions, but once I stopped my body temperature soon plummeted. I felt too tired to cook so I just ate a couple of sandwiches. I started to feel really cold so I sat directly in front of my gas wall heater but could not get warm. I ended up in bed with 3 or 4 layers of clothing on and extra bedding on top of the duvet but it still took me over an hour to stop shivering.