Last weekend, as I left the Bavarian National Museum and headed toward the Englisher Garten to eventually get somem Gluhwein to warm me up, I spotted a crowd watching local surfers. In Germany. In December. In the cold (about 40 degrees F) . In the middle of a city in the middle of a land-locked state.
If you do a google search on surfing the isar you will find longer videos and better pictures.