Not particularly hot where I live but we do get some nice weather. I wouldn't leave the roof down on a very warm day for any length of time though, as the leather becomes uncomfortably hot quite quickly. Once you're in the car & moving it's not really an issue as the sun can't get to what you're sitting on in any case. Nowadays I only ever have black leather because it's less prone to marking. Cream or any other light colour leather can be a disastrous choice if you often wear denim jeans (which I do) & I've seen more than a few seats ruined as a result of just that.For Boxster owners: Do you have a dark color interior and how do you find it in the sun with the top down, especially when first getting in?