Originally Posted by
ClydeClydeson
My riding buddy has a strict 'sun's out, guns out' policy - if the temp is above ~18 deg c and the sun is out, his shirt or jersey comes off. I've tried it but prefer to stay covered. Also, getting a burn can be very very quick if the sun is directly on my shoulders and back... in South-Central Canada, anyways... Scotland is further North than us, so I would bet the sun is not as intense.
At 18C, there's a 50-50 chance that I still have on my arm and knee warmers.