A busy port city, Hamburg has a maritime climate, with warm, wet summers and cold winters. Temperatures are not extreme, but summer days can be cold and rainy/damp.
In Hamburg, Germany - The Venice of Northern Europe, Michele Hartley tells us, "Be prepared for all types of weather, especially rain and make sure you have good walking shoes as well as a travel pouch for credit cards and valuables."
Hamburg has more bridges than Amsterdam and Venice combined.
The charts below show the historic high and low temperatures and the month by month precipitation in Hamburg.
Superbude Hotel Hostel St. Georg (value)