ha ha... still got my jumper on at night but I may be breaking the shorts out soon, Its gone above 15c and I class that near shorts weather (I'm a softy southerner so I don't put my shorts on for any old sun. Not as hard as those northerners)...
My issue is my house is south facing and get the full sun from near sunrise to sun set. I'm only having miner issue's until the sun go's down, not to bad at the moment but I'm thinking if we get a really hot summer (for us brits) my new tents may not hold up to it... glad I upgraded to that 6" fan, just got to accusingly insulate the ducting now to reduce the wind noise late at night.