Apart from a few wispy tendrils, there is not a cloud in the sky. Which probably accounts for the overnight minimum of 5 - again. Sunrise certainly photographs a lot better when there are lots of clouds around - something to diffuse the light, and to add a bit of colour to the sky. Plus you don't get this great big white blob in the corner of your photos.
The rowers were out as usual. I'd forgotten what a massively masochistic sport this is. Rowing when it is warm is bad enough - rowing when the temperature is not far above freezing is just plain insane. Lovely flat water though.