The pilot had commenced superspreading operations at about midday, and was returning to his base strip at the completion of the day's activities. He was landing towards the west. The strip slopes up 4` to the west. The pilot reported that he had not been aware until the flare that he was landing with a tailwind component, as there had been a westerly component in his operations area. He touched down some distance along the strip. Due to looking into the setting sun, he misjudged the distance remaining and was slow to apply braking. When it was obvious that the aircraft would not stop before the boundary fence, he turned the aircraft to the left to minimise damage. The outer right wing struck a fence post.