When leaving Trier in the morning the sky was filled with dark rainy clouds. While packing up my bike in the street the rain was falling down, soaking my head and clothes. I desperatly tried to manoeuvre the half packed bike under a little shelter in front of a shop, but there was no escaping the rain and moisture. While such a start of the day does mentally prepare you for a wet-riding day, it does not yet account for the amount of awfulness that has to be endured.
On the highway it frequently came pouring down up to a point where there was almost no visibility.