The weather in Iceland is quite crazy. You can experience all 4 seasons in one day. Sun, rain, snow, fog, winds... you name it. You can experience 2 seasons withing FIVE MINUTES. Look at these photos. I actually bothered to give you the exact time each photo was taken to illustrate the frequency and abruptness of the changes.
9:38 am (photo from the bus window on our way to the glacier):
12:38 pm: rain on the glacier:
(keep reading in my english blog)