I have not kept track of temperatures yet, but I was going to be arm/leg warmers as much as possible. Can always wear them on top of the sleeves for comfort, I think the style gods will allow that if your touring
I'm up to Scotland tonight on the sleeper for a 5 day recce (2 in Scotland, 3 in England). I have gone 2 x shorts, 1 long top and then 1 short sleeve top, arm warmers, gilet, shake dry, short sleeve base layer and SPD sandals for the win.
I have not kept track of temperatures yet, but I was going to be arm/leg warmers as much as possible. Can always wear them on top of the sleeves for comfort, I think the style gods will allow that if your touring