I did some research of sun patterns and climate. I found a good bit of information, including a tool to make your own sun studies. The sun study is very helpful in estimating sunlight at a particular time of day during the year. I also was able to find some information regarding the climate of Kent throughout the year. Here are the links.
Snow/Wind/Humidity (scroll down a bit)
I was not sure on how all of you are interpreting the information regarding your design, but I hope you find these sources useful in your analysis.